[ { "id": "tonearm:1:sme-3009-series-ii-improved-fixed-headshell", "display_name": "SME 3009 Series II (Improved, fixed headshell)", "manufacturer": "SME", "model": "3009 Series II (Improved, fixed headshell)", "effective_mass_g": 6.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true }, { "id": "tonearm:2:abis-sa-1", "display_name": "Abis SA-1", "manufacturer": "Abis", "model": "SA-1", "match_ready": false }, { "id": "tonearm:3:sme-3009-series-ii-improved-removable-headshell", "display_name": "SME 3009 Series II (Improved, removable headshell)", "manufacturer": "SME", "model": "3009 Series II (Improved, removable headshell)", "effective_mass_g": 9.5, "effective_length_mm": 229, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 9.5 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:4:abis-ta-1", "display_name": "Abis TA-1", "manufacturer": "Abis", "model": "TA-1", "match_ready": false }, { "id": "tonearm:5:rega-rb300-rb303", "display_name": "Rega RB300 / RB303", "manufacturer": "Rega", "model": "RB300 / RB303", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:6:acos-lustre-gst-1", "display_name": "Acos Lustre GST 1", "manufacturer": "Acos", "model": "Lustre GST 1", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:7:technics-epa-100", "display_name": "Technics EPA-100", "manufacturer": "Technics", "model": "EPA-100", "effective_mass_g": 22, "effective_length_mm": 250, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 22 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:8:acos-lustre-gst-801", "display_name": "Acos Lustre GST 801", "manufacturer": "Acos", "model": "Lustre GST 801", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:9:jelco-sa-750d", "display_name": "Jelco SA-750D", "manufacturer": "Jelco", "model": "SA-750D", "effective_mass_g": 20, "effective_length_mm": 229, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Dealer clarification says Jelco effective-mass figures are arm + headshell; legacy SA-family source confirms removable headshell where available.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.vinylengine.com/library/jelco/sa-750d.shtml" ] } }, { "id": "tonearm:10:acos-rega-planet", "display_name": "Acos Rega Planet", "manufacturer": "Acos", "model": "Rega Planet", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:11:linn-ittok-lvii", "display_name": "Linn Ittok LVII", "manufacturer": "Linn", "model": "Ittok LVII", "effective_mass_g": 11.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:12:acos-st-455l", "display_name": "Acos ST 455L", "manufacturer": "Acos", "model": "ST 455L", "effective_length_mm": 286, "match_ready": false }, { "id": "tonearm:13:fidelity-research-fr-64s", "display_name": "Fidelity Research FR-64S", "manufacturer": "Fidelity Research", "model": "FR-64S", "effective_mass_g": 35, "effective_length_mm": 245, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 10, "max": 38 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Multiple secondary/spec sources tie FR-64S to 35 g effective arm mass and FR-S/3 19.8 g shell; TNT Audio explicitly contrasts 14.5 g without headshell, supporting that the 35 g convention includes a headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 19.8, "standard_headshell_model": "Fidelity Research FR-S/3", "source_urls": [ "https://audio-database.com/FIDELITYRESEARCH/etc/fr-64s.html", "https://www.tnt-audio.com/sorgenti/fidelity_research_fr64s_e.html" ] } }, { "id": "tonearm:14:acos-st-601", "display_name": "Acos ST 601", "manufacturer": "Acos", "model": "ST 601", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:15:pro-ject-9cc-evolution", "display_name": "Pro-Ject 9cc Evolution", "manufacturer": "Pro-Ject", "model": "9cc Evolution", "effective_mass_g": 8, "effective_length_mm": 230, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true }, { "id": "tonearm:16:acoustic-research-ar77-xb", "display_name": "Acoustic Research AR77-XB", "manufacturer": "Acoustic Research", "model": "AR77-XB", "effective_mass_g": 10, "effective_length_mm": 228.6, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Acoustic Research library material did not expose an explicit headshell/effective-mass basis for this stock arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/acoustic-research.shtml" ] } }, { "id": "tonearm:17:grace-g-707", "display_name": "Grace G-707", "manufacturer": "Grace", "model": "G-707", "effective_mass_g": 6.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true }, { "id": "tonearm:18:acoustic-research-eb101", "display_name": "Acoustic Research EB101", "manufacturer": "Acoustic Research", "model": "EB101", "effective_mass_g": 12, "effective_length_mm": 229, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Acoustic Research library material did not expose an explicit headshell/effective-mass basis for this stock arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/acoustic-research.shtml" ] } }, { "id": "tonearm:19:infinity-black-widow", "display_name": "Infinity Black Widow", "manufacturer": "Infinity", "model": "Black Widow", "effective_mass_g": 3, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Sources support the 3 g effective mass and low-mass design, but did not expose a clear statement about detachable headshell inclusion.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 1.5, "standard_headshell_model": "Infinity Black Widow low-mass headshell/assembly", "source_urls": [ "https://www.vinylengine.com/library/infinity/black-widow.shtml", "https://davidsaudio.com/Infinity_Black_Widow.pdf" ] } }, { "id": "tonearm:20:acoustic-research-the-ar-turntable", "display_name": "Acoustic Research The AR Turntable", "manufacturer": "Acoustic Research", "model": "The AR Turntable", "effective_mass_g": 13, "effective_length_mm": 229, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Acoustic Research library material did not expose an explicit headshell/effective-mass basis for this stock arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/acoustic-research.shtml" ] } }, { "id": "tonearm:21:ortofon-as-212", "display_name": "Ortofon AS-212", "manufacturer": "Ortofon", "model": "AS-212", "effective_mass_g": 22, "effective_length_mm": 229, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 15, "max": 35 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Vintage AS-212 sources were conflicting/secondary; modern AS-212S data must not be applied to the vintage AS-212.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 15, "standard_headshell_model": "Ortofon vintage SPU/SME-style headshell not verified", "source_urls": [ "https://www.vinylengine.com/turntable_forum/viewtopic.php?t=129616", "https://www.vinylengine.com/tonearm_database.php" ] } }, { "id": "tonearm:22:acoustic-research-xa", "display_name": "Acoustic Research XA", "manufacturer": "Acoustic Research", "model": "XA", "match_ready": false }, { "id": "tonearm:23:sme-series-v", "display_name": "SME Series V", "manufacturer": "SME", "model": "Series V", "effective_mass_g": 11, "effective_length_mm": 232.2, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 17 }, "match_ready": true }, { "id": "tonearm:24:acoustic-research-xb1", "display_name": "Acoustic Research XB1", "manufacturer": "Acoustic Research", "model": "XB1", "match_ready": false }, { "id": "tonearm:25:vpi-jmw-9", "display_name": "VPI JMW-9", "manufacturer": "VPI", "model": "JMW-9", "effective_mass_g": 10.2, "effective_length_mm": 240.7, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 14 }, "match_ready": true }, { "id": "tonearm:26:acoustic-signature-ta-700", "display_name": "Acoustic Signature TA-700", "manufacturer": "Acoustic Signature", "model": "TA-700", "effective_mass_g": 10.2, "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 16 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Acoustic Signature tonearm design is integrated/fixed rather than SME removable; treat effective mass as integrated arm assembly.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Acoustic Signature arm tube/headshell", "source_urls": [ "https://www.acoustic-signature.com/products/tonearms/ta-700-neo/", "https://www.acoustic-signature.com/products/tonearms/" ] } }, { "id": "tonearm:27:audio-technica-at-lp120xusb-stock-arm", "display_name": "Audio-Technica AT-LP120XUSB stock arm", "manufacturer": "Audio-Technica", "model": "AT-LP120XUSB stock arm", "effective_mass_g": 14, "effective_length_mm": 230.5, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Official product page confirms AT-HS6 headshell; official AT-LP5X page gives AT-HS6 mass as 9.3 g. No source found for LP120X effective-mass inclusion.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 9.3, "standard_headshell_model": "Audio-Technica AT-HS6", "source_urls": [ "https://www.audio-technica.com/en-eu/at-lp120xusb", "https://www.audio-technica.com/en/turntables/all/at-lp5x" ] } }, { "id": "tonearm:28:acoustic-signature-ta-7000", "display_name": "Acoustic Signature TA-7000", "manufacturer": "Acoustic Signature", "model": "TA-7000", "match_ready": false }, { "id": "tonearm:29:kuzma-stogi-s", "display_name": "Kuzma Stogi S", "manufacturer": "Kuzma", "model": "Stogi S", "effective_mass_g": 11, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 17 }, "match_ready": true }, { "id": "tonearm:30:acoustic-signature-ta-9000", "display_name": "Acoustic Signature TA-9000", "manufacturer": "Acoustic Signature", "model": "TA-9000", "match_ready": false }, { "id": "tonearm:31:hadcock-gh-228", "display_name": "Hadcock GH 228", "manufacturer": "Hadcock", "model": "GH 228", "effective_mass_g": 7.5, "effective_length_mm": 228.6, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true }, { "id": "tonearm:32:acoustic-solid-solid-classic-wood", "display_name": "Acoustic Solid Solid Classic Wood", "manufacturer": "Acoustic Solid", "model": "Solid Classic Wood", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:33:saec-we-308n", "display_name": "SAEC WE-308N", "manufacturer": "SAEC", "model": "WE-308N", "effective_mass_g": 18, "effective_length_mm": 240, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 8, "max": 26 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SAEC WE-308N sources/manual listings verify model family and headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 10.5, "standard_headshell_model": "SAEC WE-308N headshell not fully verified", "source_urls": [ "https://www.vinylengine.com/library/saec/we-308.shtml", "https://audio-database.com/SAEC/etc/we-308.html" ] } }, { "id": "tonearm:34:thorens-tp-16-mk-i", "display_name": "Thorens TP 16 (Mk I)", "manufacturer": "Thorens", "model": "TP 16 (Mk I)", "effective_mass_g": 16.5, "effective_length_mm": 230, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TP 16 (Mk I).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:35:linn-ekos-se", "display_name": "Linn Ekos SE", "manufacturer": "Linn", "model": "Ekos SE", "effective_mass_g": 11.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true }, { "id": "tonearm:36:dual-arm-on-1229", "display_name": "Dual Arm on 1229", "manufacturer": "Dual", "model": "Arm on 1229", "effective_mass_g": 13, "effective_length_mm": 203.4, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Sources describe the Dual 1229 arm and proprietary cartridge mounting, but no reliable source was found for the 13 g effective-mass inclusion basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Dual 1229 proprietary cartridge sled/headshell", "source_urls": [ "https://hifi-wiki.com/index.php/Dual_1229", "https://www.vinylengine.com/turntable_forum/viewtopic.php?t=129053" ] } }, { "id": "tonearm:37:micro-seiki-ma-505", "display_name": "Micro Seiki MA-505", "manufacturer": "Micro Seiki", "model": "MA-505", "effective_mass_g": 14.5, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "MA-505 manual/library sources verify removable headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 9, "standard_headshell_model": "Micro Seiki standard headshell (model not verified)", "source_urls": [ "https://www.vinylengine.com/library/micro-seiki/ma-505.shtml", "https://ia800105.us.archive.org/6/items/manual_MA505_SM_MICROSEIK_EN/MA505_SM_MICROSEIK_EN_text.pdf" ] } }, { "id": "tonearm:38:naim-aro", "display_name": "Naim Aro", "manufacturer": "Naim", "model": "Aro", "effective_mass_g": 11, "effective_length_mm": 230, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 12 }, "match_ready": true }, { "id": "tonearm:39:audioquest-pt-9", "display_name": "AudioQuest PT-9", "manufacturer": "AudioQuest", "model": "PT-9", "effective_mass_g": 10.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true }, { "id": "tonearm:40:clearaudio-tracer", "display_name": "Clearaudio Tracer", "manufacturer": "Clearaudio", "model": "Tracer", "effective_mass_g": 16, "effective_length_mm": 239.3, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Official/distributor page lists effective mass 10 g and describes the aluminum headshell as part of the Tracer arm; connector should not be SME universal.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "standard_headshell_model": "integral aluminum Tracer headshell", "source_urls": [ "https://musicalsurroundings.com/products/clearaudio-tracer-tonearm", "https://musicalsurroundings.com/products/clearaudio-tracer-tonearm" ] } }, { "id": "tonearm:41:brinkmann-10-5", "display_name": "Brinkmann 10.5", "manufacturer": "Brinkmann", "model": "10.5", "effective_mass_g": 12, "effective_length_mm": 259.3, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 18 }, "match_ready": true }, { "id": "tonearm:42:rega-rb220-rb202", "display_name": "Rega RB220 / RB202", "manufacturer": "Rega", "model": "RB220 / RB202", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:43:syrinx-pu3", "display_name": "Syrinx PU3", "manufacturer": "Syrinx", "model": "PU3", "effective_mass_g": 11, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 10 }, "match_ready": true }, { "id": "tonearm:44:alphason-hr-100s", "display_name": "Alphason HR-100S", "manufacturer": "Alphason", "model": "HR-100S", "effective_mass_g": 11, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true }, { "id": "tonearm:45:mofi-ultra-tonearm", "display_name": "MoFi Ultra-Tonearm", "manufacturer": "MoFi", "model": "Ultra-Tonearm", "effective_mass_g": 10, "effective_length_mm": 254, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "MoFi Ultra-Tonearm manual sources cover setup and headshell/cartridge adjustment, but no official effective-mass/headshell-basis statement was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "reference_headshell_mass_g": 8, "standard_headshell_model": "MoFi removable/adjustable headshell not separately verified", "source_urls": [ "https://www.audioadvisor.com/content/pdf/MoFi_Electronics_UltraDeck_Manual.pdf", "https://www.manualshelf.com/manual/mofi/studiodeckfound/1-owner-s-manual-english.html" ] } }, { "id": "tonearm:46:mission-774-original", "display_name": "Mission 774 (Original)", "manufacturer": "Mission", "model": "774 (Original)", "effective_mass_g": 5.5, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true }, { "id": "tonearm:47:sme-3012-series-i", "display_name": "SME 3012 Series I", "manufacturer": "SME", "model": "3012 Series I", "effective_mass_g": 14.5, "effective_length_mm": 305.8, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 14.5 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:48:technics-epa-500", "display_name": "Technics EPA-500", "manufacturer": "Technics", "model": "EPA-500", "effective_mass_g": 14, "effective_length_mm": 250, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 14 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:49:graham-phantom-iii", "display_name": "Graham Phantom III", "manufacturer": "Graham", "model": "Phantom III", "effective_mass_g": 12, "effective_length_mm": 235, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Phantom III source explicitly distinguishes removable armwand from removable headshell; cartridge is mounted in the slotted head of the armwand.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Graham Phantom III removable armwand", "source_urls": [ "https://www.theabsolutesound.com/articles/graham-engineering-phantom-iii-tonearm/", "https://www.theabsolutesound.com/articles/graham-engineering-phantom-iii-tonearm/" ] } }, { "id": "tonearm:50:ikeda-it-407", "display_name": "Ikeda IT-407", "manufacturer": "Ikeda", "model": "IT-407", "effective_mass_g": 30, "effective_length_mm": 307, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Source lists IT-407/IT-407CR cartridge/headshell balance range and 17.2 g headshell weight. Effective-mass inclusion/exclusion is not explicitly stated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 17.2, "standard_headshell_model": "Ikeda supplied headshell", "source_urls": [ "https://music2.nl/fidelity-research-ikeda-mc-cartridges-and-tonearms/models-ikeda/", "https://www.vinylengine.com/library/ikeda/it-407.shtml" ] } }, { "id": "tonearm:51:thorens-tp-92", "display_name": "Thorens TP 92", "manufacturer": "Thorens", "model": "TP 92", "effective_mass_g": 11, "effective_length_mm": 232.8, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "TP92 is a fixed/integrated modern Thorens arm; effective mass should be treated as arm assembly mass, not SME headshell mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Thorens TP92 headshell/arm tube", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:52:audio-technica-at-1010", "display_name": "Audio-Technica AT-1010", "manufacturer": "Audio-Technica", "model": "AT-1010", "effective_mass_g": 15, "effective_length_mm": 257, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Accessible secondary sources describe a removable magnesium headshell and a conflicting 16 g effective mass; no inclusion basis found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "removable magnesium headshell", "source_urls": [ "https://www.vinylengine.com/library/audio-technica/at-1010.shtml", "https://www.stereonet.com/forums/topic/548254-audio-technica-at-1010-tonearm/" ] } }, { "id": "tonearm:53:origin-live-silver-mk4", "display_name": "Origin Live Silver MK4", "manufacturer": "Origin Live", "model": "Silver MK4", "effective_mass_g": 12, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:54:denon-da-307", "display_name": "Denon DA-307", "manufacturer": "Denon", "model": "DA-307", "effective_mass_g": 15, "effective_length_mm": 244, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Audio Database gives PCL-5, shell weight 6 g, and cartridge range including shell. Separate review gives 20 g with cartridge installed, not arm-only basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 6, "standard_headshell_model": "Denon PCL-5", "source_urls": [ "https://audio-database.com/DENON-COLUMBIA/etc/da-307.html", "https://www.gammaelectronics.xyz/audio_09-1980_denon.html" ] } }, { "id": "tonearm:55:schick-12-inch", "display_name": "Schick 12-inch", "manufacturer": "Schick", "model": "12-inch", "effective_mass_g": 14, "effective_length_mm": 304.8, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "Thomas Schick describes a headshell plug/construction as part of resonance control, but the retrieved source does not state effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://thomas-schick.com/en/produkte/12-schick-arm", "https://www.ptpaudio.com/schick" ] } }, { "id": "tonearm:56:sony-pua-7", "display_name": "Sony PUA-7", "manufacturer": "Sony", "model": "PUA-7", "effective_mass_g": 12.5, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sony PUA source identifies the universal PUA arm family, but does not explicitly state whether the 12.5 g value includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Sony universal removable headshell family (not mass-verified)", "source_urls": [ "https://www.vinylengine.com/library/sony/pua-1500.shtml", "https://audio-database.com/SONY-ESPRIT/etc/pua-1500.html" ] } }, { "id": "tonearm:57:stax-ua-7", "display_name": "Stax UA-7", "manufacturer": "Stax", "model": "UA-7", "effective_mass_g": 12, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:58:well-tempered-lab-wtl", "display_name": "Well Tempered Lab (WTL)", "manufacturer": "Well Tempered", "model": "Lab (WTL)", "effective_mass_g": 10, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:59:mayware-formula-iv", "display_name": "Mayware Formula IV", "manufacturer": "Mayware", "model": "Formula IV", "effective_mass_g": 4.5, "effective_length_mm": 224, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:60:emt-929", "display_name": "EMT 929", "manufacturer": "EMT", "model": "929", "effective_mass_g": 20, "effective_length_mm": 244, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "EMT sources confirm 929 accepts EMT T and OF pickup heads and later EMT/EIA connector variants exist, but no reliable source found states the basis of the 20 g effective mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "EMT T/O pickup head or EMT connector shell", "source_urls": [ "https://www.vinylengine.com/library/emt/929.shtml", "https://emt-international.ch/e/929-997.php" ] } }, { "id": "tonearm:61:garrard-arm-on-zero-100", "display_name": "Garrard Arm on Zero 100", "manufacturer": "Garrard", "model": "Arm on Zero 100", "effective_mass_g": 18, "effective_length_mm": 213, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Manual/parts sources confirm the Zero 100 uses a proprietary cartridge carrier for 1/2 inch cartridges, but no source found states whether the 18 g effective mass includes the carrier.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Garrard C3 cartridge carrier", "source_urls": [ "https://www.manualslib.com/manual/1513961/Garrard-Zero-100.html", "https://www.vinylengine.com/turntable_forum/viewtopic.php?t=139200" ] } }, { "id": "tonearm:62:souther-sla-3", "display_name": "Souther SLA-3", "manufacturer": "Souther", "model": "SLA-3", "effective_mass_g": 2.3, "effective_length_mm": 165, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:63:acoustic-signature-ta-1000", "display_name": "Acoustic Signature TA-1000", "manufacturer": "Acoustic Signature", "model": "TA-1000", "effective_mass_g": 9.5, "effective_length_mm": 239.3, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Official Acoustic Signature page lists effective mass and describes the tonearm's own headshell; SME/Rega wording is mounting style, not a removable headshell connector.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "integral TA-1000 NEO headshell", "source_urls": [ "https://www.acoustic-signature.com/products/tonearms/ta-1000-neo/", "https://www.acoustic-signature.com/products/tonearms/ta-1000-neo/" ] } }, { "id": "tonearm:64:goldmund-t3f", "display_name": "Goldmund T3F", "manufacturer": "Goldmund", "model": "T3F", "effective_mass_g": 4, "effective_length_mm": 170, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:65:audiocraft-ac-300-mkii", "display_name": "Audiocraft AC-300 MKII", "manufacturer": "Audiocraft", "model": "AC-300 MKII", "effective_mass_g": 6, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:66:grace-g-940", "display_name": "Grace G-940", "manufacturer": "Grace", "model": "G-940", "effective_mass_g": 7.5, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "G-940 source identifies the supplied HS-5 headshell and cartridge range, but no explicit statement that published effective mass includes/excludes HS-5 was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 11.3, "standard_headshell_model": "Grace HS-5", "source_urls": [ "https://audio-heritage.jp/GRACE/etc/g-940.html", "https://samuraiaudio.com/products/grace-hs-5-headshell-11-3g" ] } }, { "id": "tonearm:67:breuer-dynamic-type-8", "display_name": "Breuer Dynamic Type 8", "manufacturer": "Breuer", "model": "Dynamic Type 8", "effective_mass_g": 12, "effective_length_mm": 228.6, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:68:technics-sl-1200gr-stock-arm", "display_name": "Technics SL-1200GR stock arm", "manufacturer": "Technics", "model": "SL-1200GR stock arm", "effective_mass_g": 12, "effective_length_mm": 230, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics official page confirms universal S-shaped tonearm; secondary discussion explicitly states the 12 g effective mass is with the factory headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 7.5, "standard_headshell_model": "Technics factory headshell", "source_urls": [ "https://www.technics.com/se/produkter/grand-class/skivspelare/sl-1200gr.html", "https://forums.stevehoffman.tv/threads/the-technics-sl-1200-gae-g-gr-general-questions-thread.766669/page-201" ] } }, { "id": "tonearm:69:lenco-l75-stock-arm", "display_name": "Lenco L75 stock arm", "manufacturer": "Lenco", "model": "L75 stock arm", "effective_mass_g": 23, "effective_length_mm": 211, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Lenco L75 manuals confirm stock tonearm/turntable setup but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Lenco L75 stock headshell", "source_urls": [ "https://archive.org/download/manual_L75_OM_LENCO_EN/L75_OM_LENCO_EN_text.pdf", "https://www.tnt-audio.com/clinica/diy_lenco_tonearm1_e.html" ] } }, { "id": "tonearm:70:roksan-nima", "display_name": "Roksan Nima", "manufacturer": "Roksan", "model": "Nima", "effective_mass_g": 10, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:71:magnepan-unitrac-i", "display_name": "Magnepan Unitrac I", "manufacturer": "Magnepan", "model": "Unitrac I", "effective_mass_g": 8, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:72:satin-m-117", "display_name": "Satin M-117", "manufacturer": "Satin", "model": "M-117", "effective_mass_g": 15, "effective_length_mm": 228, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "Satin M-117 source search did not locate a primary spec for headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/satin.shtml" ] } }, { "id": "tonearm:73:jh-audio-formula-4", "display_name": "JH Audio Formula 4", "manufacturer": "JH Audio", "model": "Formula 4", "effective_mass_g": 4.5, "effective_length_mm": 224, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:74:lustre-gst-801", "display_name": "Lustre GST 801", "manufacturer": "Lustre", "model": "GST 801", "effective_mass_g": 20, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "GST-801 sources verify the model and secondary measured original headshell mass around 10.6 g; no explicit published effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10.6, "standard_headshell_model": "Acos/Lustre GST-801 original headshell", "source_urls": [ "https://www.vinylengine.com/library/acos/lustre-gst-801.shtml", "https://forum.audiogon.com/discussions/tonearm-acos-lustre-gst-801-yea-nay/post?postid=1859337" ] } }, { "id": "tonearm:75:sumiko-mdc-800-the-arm", "display_name": "Sumiko MDC-800 'The Arm'", "manufacturer": "Sumiko", "model": "MDC-800 'The Arm'", "effective_mass_g": 13.5, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:76:vertere-sg-1", "display_name": "Vertere SG-1", "manufacturer": "Vertere", "model": "SG-1", "effective_mass_g": 11, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:77:pioneer-pl-41-stock-arm", "display_name": "Pioneer PL-41 stock arm", "manufacturer": "Pioneer", "model": "PL-41 stock arm", "effective_mass_g": 18, "effective_length_mm": 221, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "PL-41 stock arm sources verify stock/removable headshell context, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Pioneer stock SME-style headshell", "source_urls": [ "https://vintage-turntable.com/pioneer-pl-41.html", "https://www.vinylengine.com/turntable_forum/viewtopic.php?t=128890" ] } }, { "id": "tonearm:78:mission-774lc", "display_name": "Mission 774LC", "manufacturer": "Mission", "model": "774LC", "effective_mass_g": 8, "effective_length_mm": 228, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:79:pro-ject-signature-12", "display_name": "Pro-Ject Signature 12", "manufacturer": "Pro-Ject", "model": "Signature 12", "effective_mass_g": 19.5, "effective_length_mm": 304.8, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Official Pro-Ject Signature 12 page states supplied 12 g aluminium headshell and effective tonearm mass 19.5 including Alu headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Pro-Ject diamond-cut aluminium headshell", "source_urls": [ "https://www.project-audio.com/en/product/signature-tonearms-12/", "https://www.project-audio.com/en/product/signature-tonearms-12/" ] } }, { "id": "tonearm:80:acos-lustre-gst-1", "display_name": "Acos Lustre GST-1", "manufacturer": "Acos", "model": "Lustre GST-1", "effective_mass_g": 14, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Vinyl Engine confirms removable headshell; only marketplace listing found explicitly says the effective mass is specified with an 8 g headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 8, "standard_headshell_model": "8 g headshell, removable SME-type", "source_urls": [ "https://www.vinylengine.com/library/acos/lustre-gst-1.shtml", "https://www.ebay.co.uk/itm/127638156298" ] } }, { "id": "tonearm:81:sme-3009-s2-non-improved", "display_name": "SME 3009 S2 (Non-Improved)", "manufacturer": "SME", "model": "3009 S2 (Non-Improved)", "effective_mass_g": 12.5, "effective_length_mm": 228, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 12.5 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:82:dynavector-dv-505", "display_name": "Dynavector DV-505", "manufacturer": "Dynavector", "model": "DV-505", "effective_mass_g": 13, "effective_length_mm": 241, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Manual source confirms total length with shell, EIA head connector and cartridge range including headshell, but does not explicitly tie the published 13 g effective mass to a headshell-included or bare-arm basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Dynavector aluminium headshell", "source_urls": [ "https://manualmachine.com/dynavector/dv505/1496939-user-manual/", "https://audio-database.com/DYNAVECTOR/etc/dv-505.html" ] } }, { "id": "tonearm:83:rega-rb880", "display_name": "Rega RB880", "manufacturer": "Rega", "model": "RB880", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:84:jelco-sa-250", "display_name": "Jelco SA-250", "manufacturer": "Jelco", "model": "SA-250", "effective_mass_g": 20, "effective_length_mm": 229, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Dealer clarification says Jelco effective-mass figures are arm + headshell; legacy SA-family source confirms removable headshell where available.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.lpgear.com/product/JELCOSA250.html" ] } }, { "id": "tonearm:85:linn-basik-lvx", "display_name": "Linn Basik LVX", "manufacturer": "Linn", "model": "Basik LVX", "effective_mass_g": 10, "effective_length_mm": 229, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Official Linn Basik LVX specification gives effective mass 12 g; separate source identifies detachable headshell, but the basis relative to headshell is not explicitly stated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "reference_headshell_mass_g": 7.5, "standard_headshell_model": "Linn Basik LVX detachable headshell", "source_urls": [ "https://docs.linn.co.uk/wiki/images/7/72/Basik_arm_info.PDF", "https://www.vinylengine.com/library/linn/basik-lvx.shtml" ] } }, { "id": "tonearm:86:vpi-jmw-12-7", "display_name": "VPI JMW-12.7", "manufacturer": "VPI", "model": "JMW-12.7", "effective_mass_g": 12.6, "effective_length_mm": 313.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:87:ortofon-ta-110", "display_name": "Ortofon TA-110", "manufacturer": "Ortofon", "model": "TA-110", "effective_mass_g": 4, "effective_length_mm": 231, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "excludes_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Official Ortofon TA-110 page states effective mass without headshell 3.5 g and supplied headshell LH-2000E 15.5 g.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "reference_headshell_mass_g": 15.5, "standard_headshell_model": "Ortofon LH-2000E", "source_urls": [ "https://ortofon.com/pages/ta-110-9", "https://www.canhifi.com/Resources/UserManualEntity/FileName/ta-110userguide_2016-12-28-19-17-27-104.pdf" ] } }, { "id": "tonearm:88:audio-technica-at-1005-mkii", "display_name": "Audio-Technica AT-1005 MkII", "manufacturer": "Audio-Technica", "model": "AT-1005 MkII", "effective_mass_g": 20, "effective_length_mm": 240, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Library source confirms a universal headshell arrangement, but the accessible source did not expose an effective-mass basis or standard headshell mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/audio-technica/at-1005.shtml" ] } }, { "id": "tonearm:89:grace-g-714", "display_name": "Grace G-714", "manufacturer": "Grace", "model": "G-714", "effective_mass_g": 10, "effective_length_mm": 285, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:90:micro-seiki-max-237", "display_name": "Micro Seiki MAX-237", "manufacturer": "Micro Seiki", "model": "MAX-237", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "MAX-237 appears in Micro Seiki family lists; no direct primary effective-mass/headshell-basis source found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 8, "standard_headshell_model": "Micro Seiki MAX-237 headshell not verified", "source_urls": [ "https://hifi-wiki.com/index.php/Micro_Seiki_MA-808_X", "https://micro-seiki.nl/" ] } }, { "id": "tonearm:91:roksan-tabriz", "display_name": "Roksan Tabriz", "manufacturer": "Roksan", "model": "Tabriz", "effective_mass_g": 11, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:92:tri-planar-vii-u2", "display_name": "Tri-Planar VII U2", "manufacturer": "Tri-Planar", "model": "VII U2", "effective_mass_g": 11, "effective_length_mm": 250, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:93:sme-iv", "display_name": "SME IV", "manufacturer": "SME", "model": "IV", "effective_mass_g": 11, "effective_length_mm": 232.2, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:94:kuzma-4point-9", "display_name": "Kuzma 4Point 9", "manufacturer": "Kuzma", "model": "4Point 9", "effective_mass_g": 13, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:95:nottingham-analogue-ace-space-arm", "display_name": "Nottingham Analogue Ace Space Arm", "manufacturer": "Nottingham Analogue", "model": "Ace Space Arm", "effective_mass_g": 12.5, "effective_length_mm": 222, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:96:pro-ject-rpm-9-carbon-arm", "display_name": "Pro-Ject RPM 9 Carbon Arm", "manufacturer": "Pro-Ject", "model": "RPM 9 Carbon Arm", "effective_mass_g": 8.5, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:97:wilson-benesch-a-c-t-one", "display_name": "Wilson Benesch A.C.T. One", "manufacturer": "Wilson Benesch", "model": "A.C.T. One", "effective_mass_g": 7, "effective_length_mm": 228, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:98:moerch-up-4", "display_name": "Moerch UP-4", "manufacturer": "Moerch", "model": "UP-4", "effective_mass_g": 5, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:99:luxman-ta-1", "display_name": "Luxman TA-1", "manufacturer": "Luxman", "model": "TA-1", "effective_mass_g": 16, "effective_length_mm": 240, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Luxman sources found for PD-444 family, but no primary TA-1 effective-mass/headshell-basis source was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Luxman TA-1 headshell (unverified seed reference)", "source_urls": [ "https://www.manualslib.com/products/Luxman-Pd444-3973743.html", "https://audio-database.com/LUXMAN/player/pd444.html" ] } }, { "id": "tonearm:100:tesla-p1101", "display_name": "Tesla P1101", "manufacturer": "Tesla", "model": "P1101", "effective_mass_g": 15, "effective_length_mm": 212, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Tesla P1101 manual/library source located, but effective-mass headshell basis was not verified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/tesla/p-1101.shtml" ] } }, { "id": "tonearm:101:sony-pua-1500l", "display_name": "Sony PUA-1500L", "manufacturer": "Sony", "model": "PUA-1500L", "effective_mass_g": 18, "effective_length_mm": 286, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sony PUA source identifies the universal PUA arm family, but does not explicitly state whether the 18 g value includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Sony universal removable headshell family (not mass-verified)", "source_urls": [ "https://www.vinylengine.com/library/sony/pua-1500.shtml", "https://audio-database.com/SONY-ESPRIT/etc/pua-1500.html" ] } }, { "id": "tonearm:102:jelco-sa-370h", "display_name": "Jelco SA-370H", "manufacturer": "Jelco", "model": "SA-370H", "effective_mass_g": 18, "effective_length_mm": 228, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Only generic Jelco/removable-headshell evidence found; effective-mass basis remains unknown.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.lpgear.com/product/JELCOSA250.html" ] } }, { "id": "tonearm:103:michell-tecnoarm", "display_name": "Michell TecnoArm", "manufacturer": "Michell", "model": "TecnoArm", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:104:ortofon-rm-309", "display_name": "Ortofon RM-309", "manufacturer": "Ortofon", "model": "RM-309", "effective_mass_g": 28, "effective_length_mm": 321, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "RM-309 is in Ortofon vintage/professional/SPU family; no direct explicit effective-mass basis found for this record in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 15, "standard_headshell_model": "Ortofon SPU/SME headshell family not verified for this record", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://ortofon.com/pages/smg_skg-212" ] } }, { "id": "tonearm:105:linn-akito", "display_name": "Linn Akito", "manufacturer": "Linn", "model": "Akito", "effective_mass_g": 11, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:106:vpi-fatboy-gimbal", "display_name": "VPI Fatboy Gimbal", "manufacturer": "VPI", "model": "Fatboy Gimbal", "effective_mass_g": 14, "effective_length_mm": 251.2, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:107:grace-g-545", "display_name": "Grace G-545", "manufacturer": "Grace", "model": "G-545", "effective_mass_g": 9, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Vinyl Engine/Grace manual summary says an F-type headshell was specially designed for the arm to minimize weight, but does not state effective mass basis or shell mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Grace F-type lightweight headshell", "source_urls": [ "https://www.vinylengine.com/library/grace/g-545.shtml", "https://www.audioservicemanuals.com/g/grace/grace-g/" ] } }, { "id": "tonearm:108:syrinx-le-1", "display_name": "Syrinx LE-1", "manufacturer": "Syrinx", "model": "LE-1", "effective_mass_g": 8.5, "effective_length_mm": 228, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:109:micro-seiki-cf-1", "display_name": "Micro Seiki CF-1", "manufacturer": "Micro Seiki", "model": "CF-1", "effective_mass_g": 9, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "CF-1 source lists headshell weight 6 g and semi-integrated connector; effective-mass inclusion basis not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "reference_headshell_mass_g": 6, "standard_headshell_model": "Micro Seiki CF-1 semi-integrated headshell", "source_urls": [ "https://www.vinylengine.com/library/micro-seiki/cf-1.shtml", "https://www.audioservicemanuals.com/m/micro-seiki/micro-seiki-cf/7503604-micro-seiki-cf-1-owners-manual" ] } }, { "id": "tonearm:110:schroeder-reference", "display_name": "Schroeder Reference", "manufacturer": "Schroeder", "model": "Reference", "effective_mass_g": 14, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:111:schroeder-cb", "display_name": "Schroeder CB", "manufacturer": "Schroeder", "model": "CB", "effective_mass_g": 13, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:112:schroeder-lt-linear-tracker", "display_name": "Schroeder LT (Linear Tracker)", "manufacturer": "Schroeder", "model": "LT (Linear Tracker)", "effective_mass_g": 14, "effective_length_mm": 250, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:113:reed-5a", "display_name": "Reed 5A", "manufacturer": "Reed", "model": "5A", "effective_mass_g": 18, "effective_length_mm": 251, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:114:reed-3p", "display_name": "Reed 3P", "manufacturer": "Reed", "model": "3P", "effective_mass_g": 14, "effective_length_mm": 239.3, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Reed 3P sources show effective mass depends on arm length/material/armwand; registry record lacks those dimensions.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Reed 3P armwand/headshell combination varies", "source_urls": [ "https://www.stereophile.com/content/analog-corner-248-m%C3%B8rch-dp-8-reed-3p-tonearms-techdas-air-force-one-turntable", "https://sepeaaudio.com/high-end/tonearms/reed-3p-tonearm-10-inch/" ] } }, { "id": "tonearm:115:reed-1x", "display_name": "Reed 1X", "manufacturer": "Reed", "model": "1X", "effective_mass_g": 12, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:116:sat-cf1-09", "display_name": "SAT CF1-09", "manufacturer": "SAT", "model": "CF1-09", "effective_mass_g": 12.5, "effective_length_mm": 229, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "SAT CF1-09 source describes a one-piece carbon-fibre armwand/headshell, so effective mass is integrated assembly mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "One-piece SAT carbon-fibre armwand/headshell", "source_urls": [ "https://sataudio.se/products/cf1-09/" ] } }, { "id": "tonearm:117:vertere-reference-gen-iii", "display_name": "Vertere Reference Gen III", "manufacturer": "Vertere", "model": "Reference Gen III", "effective_mass_g": 11, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:118:acoustic-solid-wtb-213", "display_name": "Acoustic Solid WTB-213", "manufacturer": "Acoustic Solid", "model": "WTB-213", "effective_mass_g": 14, "effective_length_mm": 236.7, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:119:sorane-ta-1l", "display_name": "Sorane TA-1L", "manufacturer": "Sorane", "model": "TA-1L", "effective_mass_g": 28, "effective_length_mm": 322, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sorane sources confirm removable headshell context and a 17 g Sorane headshell; they do not prove whether the 28 g arm effective mass includes that headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 17, "standard_headshell_model": "Sorane headshell", "source_urls": [ "https://mockingbirddistribution.com/sorane/sa1-2/", "https://osageaudio.com/Sorane.html" ] } }, { "id": "tonearm:120:bergmann-magne", "display_name": "Bergmann Magne", "manufacturer": "Bergmann", "model": "Magne", "effective_mass_g": 11, "effective_length_mm": 208, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:121:glanz-mh-124s-premium", "display_name": "Glanz MH-124S Premium", "manufacturer": "Glanz", "model": "MH-124S Premium", "effective_mass_g": 34, "effective_length_mm": 305, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Official Glanz page gives headshell weight 12 g including screws/leads and cartridge range including headshell, but does not state whether the 34 g effective mass includes the supplied headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Glanz MH-124S Premium supplied headshell", "source_urls": [ "https://glanz.tech/e/collection/mh124sp/", "https://excelstereo.com/glanz/s_premium.html" ] } }, { "id": "tonearm:122:amg-12jt", "display_name": "AMG 12JT", "manufacturer": "AMG", "model": "12JT", "effective_mass_g": 13.9, "effective_length_mm": 304.8, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:123:thales-simplicity-ii", "display_name": "Thales Simplicity II", "manufacturer": "Thales", "model": "Simplicity II", "effective_mass_g": 19, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:124:basis-audio-vector-4", "display_name": "Basis Audio Vector 4", "manufacturer": "Basis Audio", "model": "Vector 4", "effective_mass_g": 9, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:125:abis-sa-1-2", "display_name": "Abis SA-1.2", "manufacturer": "Abis", "model": "SA-1.2", "effective_mass_g": 21, "effective_length_mm": 239, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Manual/library source gives 17 g supplied headshell and cartridge range including headshell, but does not state whether the published 21 g effective mass includes it.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 17, "standard_headshell_model": "Abis/Sorane machine-tooled aluminium headshell", "source_urls": [ "https://www.vinylengine.com/library/abis/sa-1.shtml" ] } }, { "id": "tonearm:126:acoustical-systems-axiom", "display_name": "Acoustical Systems Axiom", "manufacturer": "Acoustical Systems", "model": "Axiom", "effective_mass_g": 14.5, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:127:eat-c-note", "display_name": "EAT C-Note", "manufacturer": "EAT", "model": "C-Note", "effective_mass_g": 8, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:128:sperling-ta-1", "display_name": "Sperling TA-1", "manufacturer": "Sperling", "model": "TA-1", "effective_mass_g": 16, "effective_length_mm": 254, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:129:helius-omega", "display_name": "Helius Omega", "manufacturer": "Helius", "model": "Omega", "effective_mass_g": 15, "effective_length_mm": 250, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:130:zavfino-aeshna-carbon", "display_name": "Zavfino Aeshna Carbon", "manufacturer": "Zavfino", "model": "Aeshna Carbon", "effective_mass_g": 9.5, "effective_length_mm": 238, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:131:audio-note-uk-arm-three-ii", "display_name": "Audio Note UK Arm Three/II", "manufacturer": "Audio Note UK", "model": "Arm Three/II", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:132:pro-ject-evo-as", "display_name": "Pro-Ject EVO AS", "manufacturer": "Pro-Ject", "model": "EVO AS", "effective_mass_g": 15, "effective_length_mm": 304.8, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Official Pro-Ject EVO AS page provides with/without headshell masses by 9/10/12 inch length; this registry record lacks length, so the correct mass/basis cannot be selected.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Pro-Ject EVO AS SME headshell", "source_urls": [ "https://www.project-audio.com/en/product/evo-as-tonearms/", "https://www.project-audio.com/en/product/evo-as-tonearms/" ] } }, { "id": "tonearm:133:clearaudio-universal", "display_name": "Clearaudio Universal", "manufacturer": "Clearaudio", "model": "Universal", "effective_mass_g": 12, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:134:vpi-jmw-memorial-tonearm", "display_name": "VPI JMW Memorial Tonearm", "manufacturer": "VPI", "model": "JMW Memorial Tonearm", "effective_mass_g": 11.5, "effective_length_mm": 258, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:135:sme-m2-9", "display_name": "SME M2-9", "manufacturer": "SME", "model": "M2-9", "effective_mass_g": 9.5, "effective_length_mm": 233.2, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME M2 source confirms detachable headshell design; published 9.5 g effective-mass basis is not explicit in the retrieved source.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable magnesium/S2-R headshell family", "source_urls": [ "https://sme.co.uk/product/m2-9-tonearm/", "https://www.smetonearms.com/index.php?cPath=15&main_page=product_info&products_id=81" ] } }, { "id": "tonearm:136:sme-m2-12r", "display_name": "SME M2-12R", "manufacturer": "SME", "model": "M2-12R", "effective_mass_g": 18, "effective_length_mm": 308.8, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME M2 source confirms detachable headshell design; published 18 g effective-mass basis is not explicit in the retrieved source.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable magnesium/S2-R headshell family", "source_urls": [ "https://sme.co.uk/product/m2-9-tonearm/", "https://www.smetonearms.com/index.php?cPath=15&main_page=product_info&products_id=81" ] } }, { "id": "tonearm:137:origin-live-illustrious-mk4", "display_name": "Origin Live Illustrious MK4", "manufacturer": "Origin Live", "model": "Illustrious MK4", "effective_mass_g": 12.5, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:138:audio-technica-at-xp7-stock-arm", "display_name": "Audio-Technica AT-XP7 stock arm", "manufacturer": "Audio-Technica", "model": "AT-XP7 stock arm", "effective_mass_g": 13, "effective_length_mm": 230.5, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Official AT-LP140XP page confirms AT-XP3 on AT-HS6; forum quote attributed to AT support says effective mass 20.6 g without cartridge, but headshell basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 9.3, "standard_headshell_model": "Audio-Technica AT-HS6 / AT-XP3 stock cartridge on AT-LP140XP", "source_urls": [ "https://www.audio-technica.com/en/at-lp140xp", "https://www.vinylengine.com/turntable_forum/viewtopic.php?t=125513" ] } }, { "id": "tonearm:139:funk-firm-fx3", "display_name": "Funk Firm FX3", "manufacturer": "Funk Firm", "model": "FX3", "effective_mass_g": 9.5, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:140:kuzma-4point-11", "display_name": "Kuzma 4Point 11", "manufacturer": "Kuzma", "model": "4Point 11", "effective_mass_g": 14, "effective_length_mm": 280, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:141:rega-rb330", "display_name": "Rega RB330", "manufacturer": "Rega", "model": "RB330", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:142:pro-ject-evo-tonearm-stock-on-x1-x2", "display_name": "Pro-Ject EVO tonearm (stock on X1/X2)", "manufacturer": "Pro-Ject", "model": "EVO tonearm (stock on X1/X2)", "effective_mass_g": 8.5, "effective_length_mm": 218.5, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:143:clearaudio-satisfy-carbon", "display_name": "Clearaudio Satisfy Carbon", "manufacturer": "Clearaudio", "model": "Satisfy Carbon", "effective_mass_g": 9, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:144:tri-planar-ultimate-12", "display_name": "Tri-Planar Ultimate 12", "manufacturer": "Tri-Planar", "model": "Ultimate 12", "effective_mass_g": 15.5, "effective_length_mm": 308.8, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:145:emt-997", "display_name": "EMT 997", "manufacturer": "EMT", "model": "997", "effective_mass_g": 25, "effective_length_mm": 307, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Sources show multiple 997 variants and pickup-head/headshell combinations, including EMT original and international/EIA versions; no source found states whether the 25 g effective mass includes a pickup head.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "EMT T/O pickup head, EMT connector, or 997i EIA variant", "source_urls": [ "https://emt-international.ch/e/929-997.php", "https://www.stereophile.com/content/listening-67-page-2" ] } }, { "id": "tonearm:146:jelco-tk-850s", "display_name": "Jelco TK-850S", "manufacturer": "Jelco", "model": "TK-850S", "effective_mass_g": 13.4, "effective_length_mm": 229, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Jelco source evidence indicates standard headshell is part of the published arm mass convention for these later TK/TS arms.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.hifitest.de/test/ausstattungsliste/tonarme/jelco-tk-850s-mkll-71070" ] } }, { "id": "tonearm:147:linn-krane", "display_name": "Linn Krane", "manufacturer": "Linn", "model": "Krane", "effective_mass_g": 11, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:148:oracle-sme-345", "display_name": "Oracle SME 345", "manufacturer": "Oracle", "model": "SME 345", "effective_mass_g": 9.5, "effective_length_mm": 239.3, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Official Oracle page states SME 345 has interchangeable shell facility; no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 7, "standard_headshell_model": "Oracle/SME interchangeable shell not verified", "source_urls": [ "https://www.oracle-audio.com/oracle-sme-345", "https://www.gammaelectronics.xyz/audio_04-1992_oracle.html" ] } }, { "id": "tonearm:149:avid-ta-3", "display_name": "AVID TA-3", "manufacturer": "AVID", "model": "TA-3", "effective_mass_g": 11, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:150:stogi-reference-313", "display_name": "Stogi Reference 313", "manufacturer": "Stogi", "model": "Reference 313", "effective_mass_g": 16, "effective_length_mm": 313, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:151:eminent-technology-et-2-5", "display_name": "Eminent Technology ET-2.5", "manufacturer": "Eminent Technology", "model": "ET-2.5", "effective_mass_g": 25, "effective_length_mm": 203, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:152:vpi-jmw-12-3d-reference", "display_name": "VPI JMW 12 3D Reference", "manufacturer": "VPI", "model": "JMW 12 3D Reference", "effective_mass_g": 10, "effective_length_mm": 300, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:153:origin-live-enterprise-mk4", "display_name": "Origin Live Enterprise MK4", "manufacturer": "Origin Live", "model": "Enterprise MK4", "effective_mass_g": 14, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:154:sme-312s", "display_name": "SME 312S", "manufacturer": "SME", "model": "312S", "effective_mass_g": 14, "effective_length_mm": 308.8, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME source gives model family/effective mass context; headshell inclusion for SME 312S's 14 g value remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:155:sat-lm-09", "display_name": "SAT LM-09", "manufacturer": "SAT", "model": "LM-09", "effective_mass_g": 10.5, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:156:kuzma-4point-14", "display_name": "Kuzma 4Point 14", "manufacturer": "Kuzma", "model": "4Point 14", "effective_mass_g": 19, "effective_length_mm": 353, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:157:nottingham-analogue-anna-arm-12", "display_name": "Nottingham Analogue Anna Arm 12", "manufacturer": "Nottingham Analogue", "model": "Anna Arm 12", "effective_mass_g": 15.5, "effective_length_mm": 305, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:158:pro-ject-12cc-evolution", "display_name": "Pro-Ject 12cc Evolution", "manufacturer": "Pro-Ject", "model": "12cc Evolution", "effective_mass_g": 10.5, "effective_length_mm": 304.8, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:159:acoustic-signature-ta-5000", "display_name": "Acoustic Signature TA-5000", "manufacturer": "Acoustic Signature", "model": "TA-5000", "effective_mass_g": 12, "effective_length_mm": 318.1, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:160:vertere-hb-tonearm", "display_name": "Vertere HB Tonearm", "manufacturer": "Vertere", "model": "HB Tonearm", "effective_mass_g": 10.5, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:161:sme-v-12", "display_name": "SME V-12", "manufacturer": "SME", "model": "V-12", "effective_mass_g": 12, "effective_length_mm": 308.8, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:162:rega-rb808", "display_name": "Rega RB808", "manufacturer": "Rega", "model": "RB808", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:163:gold-note-b-7-ceramic", "display_name": "Gold Note B-7 Ceramic", "manufacturer": "Gold Note", "model": "B-7 Ceramic", "effective_mass_g": 10, "effective_length_mm": 242, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:164:jelco-sa-750l", "display_name": "Jelco SA-750L", "manufacturer": "Jelco", "model": "SA-750L", "effective_mass_g": 22, "effective_length_mm": 305, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Dealer clarification says Jelco effective-mass figures are arm + headshell; legacy SA-family source confirms removable headshell where available.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.vinylengine.com/library/jelco/sa-750d.shtml" ] } }, { "id": "tonearm:165:thorens-tp-160", "display_name": "Thorens TP 160", "manufacturer": "Thorens", "model": "TP 160", "effective_mass_g": 12, "effective_length_mm": 232.8, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TP 160.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:166:mission-mechanic", "display_name": "Mission Mechanic", "manufacturer": "Mission", "model": "Mechanic", "effective_mass_g": 11, "effective_length_mm": 228, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:167:rega-rb700", "display_name": "Rega RB700", "manufacturer": "Rega", "model": "RB700", "effective_mass_g": 10.5, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:168:kuzma-stogi", "display_name": "Kuzma Stogi", "manufacturer": "Kuzma", "model": "Stogi", "effective_mass_g": 12, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:169:sorane-sa-1-2", "display_name": "Sorane SA-1.2", "manufacturer": "Sorane", "model": "SA-1.2", "effective_mass_g": 21, "effective_length_mm": 239, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sorane sources confirm removable headshell context and a 17 g Sorane headshell; they do not prove whether the 21 g arm effective mass includes that headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 17, "standard_headshell_model": "Sorane headshell", "source_urls": [ "https://mockingbirddistribution.com/sorane/sa1-2/", "https://osageaudio.com/Sorane.html" ] } }, { "id": "tonearm:170:well-tempered-amadeus-stock-arm", "display_name": "Well Tempered Amadeus (stock arm)", "manufacturer": "Well Tempered", "model": "Amadeus (stock arm)", "effective_mass_g": 10, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:171:roksan-sara", "display_name": "Roksan Sara", "manufacturer": "Roksan", "model": "Sara", "effective_mass_g": 9.5, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:172:linn-arko", "display_name": "Linn Arko", "manufacturer": "Linn", "model": "Arko", "effective_mass_g": 11, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:173:audio-origami-pu7", "display_name": "Audio Origami PU7", "manufacturer": "Audio Origami", "model": "PU7", "effective_mass_g": 11, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:174:mofi-studio-tonearm", "display_name": "MoFi Studio-Tonearm", "manufacturer": "MoFi", "model": "Studio-Tonearm", "effective_mass_g": 10.5, "effective_length_mm": 230, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "MoFi Studio-Tonearm manual sources cover setup and headshell/cartridge adjustment, but no official effective-mass/headshell-basis statement was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "reference_headshell_mass_g": 8, "standard_headshell_model": "MoFi removable/adjustable headshell not separately verified", "source_urls": [ "https://www.audioadvisor.com/content/pdf/MoFi_Electronics_UltraDeck_Manual.pdf", "https://www.manualshelf.com/manual/mofi/studiodeckfound/1-owner-s-manual-english.html" ] } }, { "id": "tonearm:175:technics-sl-1500c-stock-arm", "display_name": "Technics SL-1500C stock arm", "manufacturer": "Technics", "model": "SL-1500C stock arm", "effective_mass_g": 12, "effective_length_mm": 230, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics official page confirms universal S-shaped tonearm; secondary discussion explicitly states the 12 g effective mass is with the factory headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 7.5, "standard_headshell_model": "Technics factory headshell", "source_urls": [ "https://www.technics.com/se/produkter/grand-class/skivspelare/sl-1200gr.html", "https://forums.stevehoffman.tv/threads/the-technics-sl-1200-gae-g-gr-general-questions-thread.766669/page-201" ] } }, { "id": "tonearm:176:j-sikora-kv12", "display_name": "J.Sikora KV12", "manufacturer": "J.Sikora", "model": "KV12", "effective_mass_g": 13, "effective_length_mm": 304.8, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:177:pro-ject-evo-9", "display_name": "Pro-Ject EVO 9", "manufacturer": "Pro-Ject", "model": "EVO 9", "effective_mass_g": 8, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:178:sat-cf1-12", "display_name": "SAT CF1-12", "manufacturer": "SAT", "model": "CF1-12", "effective_mass_g": 18.5, "effective_length_mm": 305, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:179:acoustic-signature-ta-2000", "display_name": "Acoustic Signature TA-2000", "manufacturer": "Acoustic Signature", "model": "TA-2000", "effective_mass_g": 12, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:180:origin-live-conqueror-mk4", "display_name": "Origin Live Conqueror MK4", "manufacturer": "Origin Live", "model": "Conqueror MK4", "effective_mass_g": 13, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:181:avid-oxytone", "display_name": "AVID Oxytone", "manufacturer": "AVID", "model": "Oxytone", "effective_mass_g": 12, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:182:gold-note-b-5-1", "display_name": "Gold Note B-5.1", "manufacturer": "Gold Note", "model": "B-5.1", "effective_mass_g": 10, "effective_length_mm": 242, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:183:brinkmann-12-1", "display_name": "Brinkmann 12.1", "manufacturer": "Brinkmann", "model": "12.1", "effective_mass_g": 14, "effective_length_mm": 305.6, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:184:graham-2-2", "display_name": "Graham 2.2", "manufacturer": "Graham", "model": "2.2", "effective_mass_g": 11.5, "effective_length_mm": 235, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Graham 2.2 source is an installation/manual record but the available crawl did not expose effective-mass or headshell basis. The design uses a proprietary cartridge-carrying armwand rather than SME headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Graham removable armwand", "source_urls": [ "https://www.vinylengine.com/library/graham/2-2.shtml", "https://www.theabsolutesound.com/articles/graham-engineering-phantom-iii-tonearm/" ] } }, { "id": "tonearm:185:ikeda-it-345", "display_name": "Ikeda IT-345", "manufacturer": "Ikeda", "model": "IT-345", "effective_mass_g": 20, "effective_length_mm": 245, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Source lists IT-345/IT-345CR cartridge/headshell balance range and 17.2 g headshell weight. Effective-mass inclusion/exclusion is not explicitly stated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 17.2, "standard_headshell_model": "Ikeda supplied headshell", "source_urls": [ "https://music2.nl/fidelity-research-ikeda-mc-cartridges-and-tonearms/models-ikeda/", "https://www.vinylengine.com/library/ikeda/it-407.shtml" ] } }, { "id": "tonearm:186:vpi-classic-tonearm", "display_name": "VPI Classic Tonearm", "manufacturer": "VPI", "model": "Classic Tonearm", "effective_mass_g": 10.2, "effective_length_mm": 258, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:187:sorane-za-12", "display_name": "Sorane ZA-12", "manufacturer": "Sorane", "model": "ZA-12", "effective_mass_g": 30, "effective_length_mm": 322, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sorane sources confirm removable headshell context and a 17 g Sorane headshell; they do not prove whether the 30 g arm effective mass includes that headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 17, "standard_headshell_model": "Sorane headshell", "source_urls": [ "https://mockingbirddistribution.com/sorane/sa1-2/", "https://osageaudio.com/Sorane.html" ] } }, { "id": "tonearm:188:audio-technica-at-lp5x-stock-arm", "display_name": "Audio-Technica AT-LP5X stock arm", "manufacturer": "Audio-Technica", "model": "AT-LP5X stock arm", "effective_mass_g": 15, "effective_length_mm": 247, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Official page gives AT-HS6 9.3 g; independent review explicitly says effective mass is about 16 g with included HS-6 headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "reference_headshell_mass_g": 9.3, "standard_headshell_model": "Audio-Technica AT-HS6", "source_urls": [ "https://www.audio-technica.com/en/turntables/all/at-lp5x", "https://audioappraisal.com/audio-technica-at-lp5x-direct-drive-turntable-in-depth-review/" ] } }, { "id": "tonearm:189:clearaudio-tt5", "display_name": "Clearaudio TT5", "manufacturer": "Clearaudio", "model": "TT5", "effective_mass_g": 11, "effective_length_mm": 210, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:190:pro-ject-s-shape-aluminium-stock-on-x-line", "display_name": "Pro-Ject S-Shape Aluminium (stock on X-line)", "manufacturer": "Pro-Ject", "model": "S-Shape Aluminium (stock on X-line)", "effective_mass_g": 9.5, "effective_length_mm": 218.5, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Pro-Ject S-shape/EVO sources establish SME headshell architecture, but this stock-on-X-line record does not map cleanly to a single official effective-mass table.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 7.5, "standard_headshell_model": "Pro-Ject X-line S-shape stock headshell", "source_urls": [ "https://www.project-audio.com/en/product/evo-as-tonearms/", "https://www.stereonet.com/reviews/pro-ject-evo-as-as-premium-tonearms-review" ] } }, { "id": "tonearm:191:sumiko-premier-ft-4", "display_name": "Sumiko Premier FT-4", "manufacturer": "Sumiko", "model": "Premier FT-4", "effective_mass_g": 12, "effective_length_mm": 239, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sumiko Premier MMT/FT arms are removable-headshell Jelco-style arms; retrieved manual/library does not state headshell inclusion for effective mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Jelco/Sumiko removable headshell (mass not verified)", "source_urls": [ "https://www.vinylengine.com/library/sumiko/premier-mmt.shtml", "https://ia801502.us.archive.org/11/items/manual_PREMIERMMT_OM_SUMIKO_EN/PREMIERMMT_OM_SUMIKO_EN_text.pdf" ] } }, { "id": "tonearm:192:eminent-technology-et-1", "display_name": "Eminent Technology ET-1", "manufacturer": "Eminent Technology", "model": "ET-1", "effective_mass_g": 35, "effective_length_mm": 203, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:193:trans-fi-terminator-t3pro", "display_name": "Trans-Fi Terminator T3Pro", "manufacturer": "Trans-Fi", "model": "Terminator T3Pro", "effective_mass_g": 7.5, "effective_length_mm": 175, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:194:gray-108", "display_name": "Gray 108", "manufacturer": "Gray", "model": "108", "effective_mass_g": 25, "effective_length_mm": 273, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Gray 108 sources describe the viscous-damped transcription arm and plug-in/change features, but no explicit effective-mass/headshell basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/gray-research/108.shtml", "https://technicalaudio.com/pdf/Gordon_Clark_folder/Gray_Research_108-B_tonearm_brochure.pdf" ] } }, { "id": "tonearm:195:alphason-xenon", "display_name": "Alphason Xenon", "manufacturer": "Alphason", "model": "Xenon", "effective_mass_g": 12, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:196:michell-gyroarm", "display_name": "Michell GyroArm", "manufacturer": "Michell", "model": "GyroArm", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:197:clearaudio-unify", "display_name": "Clearaudio Unify", "manufacturer": "Clearaudio", "model": "Unify", "effective_mass_g": 8, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:198:scheu-classic-mk-ii-12-inch", "display_name": "Scheu Classic Mk II 12-inch", "manufacturer": "Scheu", "model": "Classic Mk II 12-inch", "effective_mass_g": 14, "effective_length_mm": 303, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:199:wilson-benesch-circle-90", "display_name": "Wilson Benesch Circle 90", "manufacturer": "Wilson Benesch", "model": "Circle 90", "effective_mass_g": 13, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Wilson Benesch source check did not locate explicit Circle 90 headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://wilson-benesch.com/" ] } }, { "id": "tonearm:200:wand-the-wand-plus-9-5", "display_name": "Wand The Wand Plus 9.5", "manufacturer": "Wand", "model": "The Wand Plus 9.5", "effective_mass_g": 12.5, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:201:fidelity-research-fr-14", "display_name": "Fidelity Research FR-14", "manufacturer": "Fidelity Research", "model": "FR-14", "effective_mass_g": 14, "effective_length_mm": 245, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Audio Database confirms attached FR-S/6 shell mass 12 g and cartridge compatibility including shell, but no explicit effective-mass-basis statement was found for the 14 g value.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Fidelity Research FR-S/6", "source_urls": [ "https://audio-database.com/FIDELITYRESEARCH/etc/fr-14.html", "https://www.vinylengine.com/library/fidelity-research/fr-14.shtml" ] } }, { "id": "tonearm:202:dynavector-dv-507-mkii", "display_name": "Dynavector DV-507 MKII", "manufacturer": "Dynavector", "model": "DV-507 MKII", "effective_mass_g": 15, "effective_length_mm": 241, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Official Dynavector page confirms detachable EIA headshell and cartridge range including headshell; dealer/review sources report about 15-15.4 g headshell, but no source explicitly states whether the published 15 g effective mass includes it.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 15.4, "standard_headshell_model": "Dynavector DV-507 MkII aluminium alloy EIA headshell", "source_urls": [ "https://www.dynavector.com/audio/507mk2.php", "https://www.enjoythemusic.com/magazine/equipment/1205/dynavector507mkii.htm" ] } }, { "id": "tonearm:203:wilson-benesch-a-c-t-25", "display_name": "Wilson Benesch A.C.T. 25", "manufacturer": "Wilson Benesch", "model": "A.C.T. 25", "effective_mass_g": 10, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:204:saec-we-8000-st", "display_name": "SAEC WE-8000/ST", "manufacturer": "SAEC", "model": "WE-8000/ST", "effective_mass_g": 18, "effective_length_mm": 233, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SAEC WE-8000/ST sources confirm geometry/cartridge range and show headshell supplied in some sets, but do not state whether the 18 g value includes the headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SAEC ULS-8X/ceramic headshell reported with some WE-8000/ST examples", "source_urls": [ "https://www.vinylengine.com/library/saec/we-8000.shtml", "https://soundgate.net/old_version/html/product/ODQ1.highend" ] } }, { "id": "tonearm:205:grace-g-840f", "display_name": "Grace G-840F", "manufacturer": "Grace", "model": "G-840F", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Forum user citing the Grace manual says the manual specifies 18 g with original headshell and F-8C cartridge mounted; seed 12 g appears to be 18 g minus the 6 g cartridge, implying original headshell remains included. This needs manual verification.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Grace G-840F original headshell with Grace F-8C reference cartridge in manual example", "source_urls": [ "https://www.vinylengine.com/library/grace/g-840f.shtml", "https://www.diyaudio.com/community/threads/which-grace-tonearm.283694/" ] } }, { "id": "tonearm:206:hadcock-gh-242", "display_name": "Hadcock GH 242", "manufacturer": "Hadcock", "model": "GH 242", "effective_mass_g": 9, "effective_length_mm": 243.8, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:207:brinkmann-tonearm-10-0", "display_name": "Brinkmann Tonearm 10.0", "manufacturer": "Brinkmann", "model": "Tonearm 10.0", "effective_mass_g": 11.5, "effective_length_mm": 249, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:208:technics-epa-250", "display_name": "Technics EPA-250", "manufacturer": "Technics", "model": "EPA-250", "effective_mass_g": 14, "effective_length_mm": 250, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 14 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:209:micro-seiki-ma-707", "display_name": "Micro Seiki MA-707", "manufacturer": "Micro Seiki", "model": "MA-707", "effective_mass_g": 13.5, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "MA-707 source lists removable headshell, adjustable effective mass, headshell weight 4 g and semi-integrated connector; fixed published mass basis remains unsafe.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "reference_headshell_mass_g": 4, "standard_headshell_model": "Micro Seiki MA-707 supplied semi-integrated headshell", "source_urls": [ "https://www.vinylengine.com/library/micro-seiki/ma-707.shtml", "https://manuals.plus/micro-seiki/ma-707-dynamic-balance-gimbal-bearing-tonearm-manual.pdf" ] } }, { "id": "tonearm:210:graham-phantom-elite", "display_name": "Graham Phantom Elite", "manufacturer": "Graham", "model": "Phantom Elite", "effective_mass_g": 13, "effective_length_mm": 235, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Sources describe a removable titanium armwand/cartridge platform, not a separate detachable headshell. Effective mass should be represented as an armwand-integrated moving system, but exact published-mass basis still deserves source tracking.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Graham Phantom Elite removable armwand", "source_urls": [ "https://graham-engineering.com/products/tonearms/phantom-elite/", "https://www.theabsolutesound.com/articles/graham-engineering-phantom-iii-tonearm/" ] } }, { "id": "tonearm:211:basis-audio-superarm-9", "display_name": "Basis Audio SuperArm 9", "manufacturer": "Basis Audio", "model": "SuperArm 9", "effective_mass_g": 7, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:212:pro-ject-evo-10", "display_name": "Pro-Ject EVO 10", "manufacturer": "Pro-Ject", "model": "EVO 10", "effective_mass_g": 9.5, "effective_length_mm": 254, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:213:audio-technica-at-1120", "display_name": "Audio-Technica AT-1120", "manufacturer": "Audio-Technica", "model": "AT-1120", "effective_mass_g": 10, "effective_length_mm": 240, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Accessible library snippet describes the AT-1120 as a low-mass AT-1100 variant with fixed plastic headshell; connector should not be SME universal.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "fixed plastic headshell", "source_urls": [ "https://www.vinylengine.com/library/audio-technica/at-1120.shtml", "https://www.vinylengine.com/library/audio-technica/at-1100.shtml" ] } }, { "id": "tonearm:214:linn-lvii-basik-plus", "display_name": "Linn LVII (Basik Plus)", "manufacturer": "Linn", "model": "LVII (Basik Plus)", "effective_mass_g": 10.5, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:215:acoustic-research-ar-xa-tonearm", "display_name": "Acoustic Research (AR) XA Tonearm", "manufacturer": "Acoustic Research (AR)", "model": "XA Tonearm", "effective_mass_g": 15, "effective_length_mm": 219, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Sources confirm the AR XA/XB has a specific replaceable/proprietary headshell ecosystem, but no reliable source was found for effective-mass inclusion basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "AR XA/XB proprietary slide-in headshell", "source_urls": [ "https://www.patsaudioparts.com/single-post/AR-XA-XB-Headshell", "https://www.vinylengine.com/turntable_forum/viewtopic.php?f=34&t=5548" ] } }, { "id": "tonearm:216:sony-pua-9", "display_name": "Sony PUA-9", "manufacturer": "Sony", "model": "PUA-9", "effective_mass_g": 9, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sony PUA source identifies the universal PUA arm family, but does not explicitly state whether the 9 g value includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Sony universal removable headshell family (not mass-verified)", "source_urls": [ "https://www.vinylengine.com/library/sony/pua-1500.shtml", "https://audio-database.com/SONY-ESPRIT/etc/pua-1500.html" ] } }, { "id": "tonearm:217:oracle-sme-v", "display_name": "Oracle SME V", "manufacturer": "Oracle", "model": "SME V", "effective_mass_g": 11, "effective_length_mm": 232.2, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:218:thorens-tp-11-mk-ii", "display_name": "Thorens TP 11 (Mk II)", "manufacturer": "Thorens", "model": "TP 11 (Mk II)", "effective_mass_g": 7.5, "effective_length_mm": 230, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TP 11 (Mk II).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:219:jelco-tk-950s", "display_name": "Jelco TK-950S", "manufacturer": "Jelco", "model": "TK-950S", "effective_mass_g": 13.1, "effective_length_mm": 229, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Jelco source evidence indicates standard headshell is part of the published arm mass convention for these later TK/TS arms.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/" ] } }, { "id": "tonearm:220:sme-series-iv-vi", "display_name": "SME Series IV.Vi", "manufacturer": "SME", "model": "Series IV.Vi", "effective_mass_g": 12, "effective_length_mm": 232.2, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:221:fidelity-research-fr-24-mkii", "display_name": "Fidelity Research FR-24 MkII", "manufacturer": "Fidelity Research", "model": "FR-24 MkII", "effective_mass_g": 13, "effective_length_mm": 245, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Audio Database gives attached shell FR-S/1 at 8 g and compatible cartridge weight including shell; no source found explicitly states if 13 g effective mass includes the shell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 8, "standard_headshell_model": "Fidelity Research FR-S/1", "source_urls": [ "https://audio-database.com/FIDELITYRESEARCH/etc/fr-24mk2.html", "https://www.vinylengine.com/turntable_forum/viewtopic.php?t=126526" ] } }, { "id": "tonearm:222:moerch-dp-6", "display_name": "Moerch DP-6", "manufacturer": "Moerch", "model": "DP-6", "effective_mass_g": 6.5, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:223:scheu-tacco-mk-ii", "display_name": "Scheu Tacco Mk II", "manufacturer": "Scheu", "model": "Tacco Mk II", "effective_mass_g": 14, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:224:sony-ps-x9-stock-arm", "display_name": "Sony PS-X9 stock arm", "manufacturer": "Sony", "model": "PS-X9 stock arm", "effective_mass_g": 12, "effective_length_mm": 260, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "Sony PS-X9 manual/library source did not expose an explicit stock-arm effective-mass headshell basis in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/sony/ps-x9.shtml" ] } }, { "id": "tonearm:225:pioneer-exclusive-ea-3", "display_name": "Pioneer Exclusive EA-3", "manufacturer": "Pioneer", "model": "Exclusive EA-3", "effective_mass_g": 8, "effective_length_mm": 250, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Exclusive EA-3/P3 source describes exchange pipe system with straight pipe integrated headshell and S-shaped universal pipe; equivalent mass is presented as tonearm property, but pipe/headshell configuration must be explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 0, "standard_headshell_model": "Integrated straight pipe / exchangeable S-pipe system", "source_urls": [ "https://audio-database.com/PIONEER-EXCLUSIVE/player/p3-e.html", "https://otomon.net/products/detail/189" ] } }, { "id": "tonearm:226:avid-nexus", "display_name": "AVID Nexus", "manufacturer": "AVID", "model": "Nexus", "effective_mass_g": 14, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:227:funk-firm-akutrak", "display_name": "Funk Firm Akutrak", "manufacturer": "Funk Firm", "model": "Akutrak", "effective_mass_g": 9, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:228:acoustic-signature-ta-7000-neo", "display_name": "Acoustic Signature TA-7000 Neo", "manufacturer": "Acoustic Signature", "model": "TA-7000 Neo", "effective_mass_g": 12, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:229:denon-da-309", "display_name": "Denon DA-309", "manufacturer": "Denon", "model": "DA-309", "effective_mass_g": 18, "effective_length_mm": 244, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Audio Database identifies the DA-309 headshell construction and approximate 9 g shell weight; no source states effective-mass inclusion.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 9, "standard_headshell_model": "Denon DA-309 magnesium/viscoelastic headshell", "source_urls": [ "https://audio-database.com/DENON-COLUMBIA/etc/da-309.html", "https://audio-database.com/DENON-COLUMBIA/etc/da-309.html" ] } }, { "id": "tonearm:230:vpi-fatboy-unipivot", "display_name": "VPI Fatboy Unipivot", "manufacturer": "VPI", "model": "Fatboy Unipivot", "effective_mass_g": 11, "effective_length_mm": 251.2, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:231:pro-ject-signature-10", "display_name": "Pro-Ject Signature 10", "manufacturer": "Pro-Ject", "model": "Signature 10", "effective_mass_g": 10.5, "effective_length_mm": 254, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:232:grace-g-565f", "display_name": "Grace G-565F", "manufacturer": "Grace", "model": "G-565F", "effective_mass_g": 15, "effective_length_mm": 285, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Only family/parts evidence found for G-565F; no effective-mass basis or standard shell mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Grace G-565F original/F-type headshell", "source_urls": [ "https://samuraiaudio.com/products/grace-g540-g545-g560-g565-tonearm-weight-30-4g", "https://www.vinylengine.com/library/grace/g640p.shtml" ] } }, { "id": "tonearm:233:audio-technica-at-1100", "display_name": "Audio-Technica AT-1100", "manufacturer": "Audio-Technica", "model": "AT-1100", "effective_mass_g": 6, "effective_length_mm": 240, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Library source states the AT-1100 uses a plug-in integrated arm and lists effective mass by arm configuration; no SME headshell should be added.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "AT-1100 plug-in integrated arm, straight arm configuration", "source_urls": [ "https://www.vinylengine.com/library/audio-technica/at-1100.shtml", "https://www.vinylengine.com/library/audio-technica/at-1100.shtml" ] } }, { "id": "tonearm:234:thorens-tp-13a-kugelarm", "display_name": "Thorens TP 13a ('Kugelarm')", "manufacturer": "Thorens", "model": "TP 13a ('Kugelarm')", "effective_mass_g": 16, "effective_length_mm": 230, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens source context found, but Thorens TP 13a ('Kugelarm')'s effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:235:mission-774sm", "display_name": "Mission 774SM", "manufacturer": "Mission", "model": "774SM", "effective_mass_g": 14, "effective_length_mm": 228, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "774SM source states the arm has a bonded alloy headshell, so detachable-headshell double counting is not applicable.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Bonded alloy headshell", "source_urls": [ "https://www.vinylengine.com/library/mission/774sm.shtml", "https://audio-database.com/CYRUS-MISSION/etc/774sm.html" ] } }, { "id": "tonearm:236:ortofon-rs-309d", "display_name": "Ortofon RS-309D", "manufacturer": "Ortofon", "model": "RS-309D", "effective_mass_g": 26, "effective_length_mm": 326, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "RS-309D is in Ortofon vintage/professional/SPU family; no direct explicit effective-mass basis found for this record in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 15, "standard_headshell_model": "Ortofon SPU/SME headshell family not verified for this record", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://ortofon.com/pages/smg_skg-212" ] } }, { "id": "tonearm:237:technics-epa-b500", "display_name": "Technics EPA-B500", "manufacturer": "Technics", "model": "EPA-B500", "effective_mass_g": 14, "effective_length_mm": 250, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 14 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:238:ikeda-it-407-cr-1", "display_name": "Ikeda IT-407 CR-1", "manufacturer": "Ikeda", "model": "IT-407 CR-1", "effective_mass_g": 30, "effective_length_mm": 307, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Source lists IT-407 CR-1 cartridge/headshell balance range and 17.2 g headshell weight. Effective-mass inclusion/exclusion is not explicitly stated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "reference_headshell_mass_g": 17.2, "standard_headshell_model": "Ikeda supplied headshell", "source_urls": [ "https://music2.nl/fidelity-research-ikeda-mc-cartridges-and-tonearms/models-ikeda/", "https://www.vinylengine.com/library/ikeda/it-407.shtml" ] } }, { "id": "tonearm:239:linn-ekos", "display_name": "Linn Ekos", "manufacturer": "Linn", "model": "Ekos", "effective_mass_g": 11.5, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:240:stax-ua-9", "display_name": "Stax UA-9", "manufacturer": "Stax", "model": "UA-9", "effective_mass_g": 14, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:241:micro-seiki-ma-505x", "display_name": "Micro Seiki MA-505X", "manufacturer": "Micro Seiki", "model": "MA-505X", "effective_mass_g": 14.5, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "MA-505X manual/library sources verify removable headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 9, "standard_headshell_model": "Micro Seiki standard headshell (model not verified)", "source_urls": [ "https://www.vinylengine.com/library/micro-seiki/ma-505.shtml", "https://ia800105.us.archive.org/6/items/manual_MA505_SM_MICROSEIK_EN/MA505_SM_MICROSEIK_EN_text.pdf" ] } }, { "id": "tonearm:242:rabco-sl-8e", "display_name": "Rabco SL-8E", "manufacturer": "Rabco", "model": "SL-8E", "effective_mass_g": 10, "effective_length_mm": 165, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:243:audiocraft-ac-400c", "display_name": "Audiocraft AC-400C", "manufacturer": "Audiocraft", "model": "AC-400C", "effective_mass_g": 7.5, "effective_length_mm": 283, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:244:dynavector-dv-501", "display_name": "Dynavector DV-501", "manufacturer": "Dynavector", "model": "DV-501", "effective_mass_g": 12, "effective_length_mm": 224, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Official Dynavector DV501 manual gives the headshell weight and cartridge range including headshell, but does not state whether the database 12 g effective mass is with or without the 15 g headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 15, "standard_headshell_model": "Dynavector DV501 aluminium diced/milled headshell", "source_urls": [ "https://www.dynavector.com/etechnical/501manual.html", "https://www.dynavector.com/etechnical/501manual.html" ] } }, { "id": "tonearm:245:garrard-tpa-12", "display_name": "Garrard TPA-12", "manufacturer": "Garrard", "model": "TPA-12", "effective_mass_g": 25, "effective_length_mm": 305, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Only secondary/review evidence found; TPA-12 has hard-to-source spare headshells and limited cartridge-position adjustment, but no effective-mass-basis or reference shell mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Garrard TPA-12 proprietary headshell", "source_urls": [ "https://www.vinylengine.com/tonearm_reviews.php?make=Garrard&model=TPA12" ] } }, { "id": "tonearm:246:sansui-ta-2050", "display_name": "Sansui TA-2050", "manufacturer": "Sansui", "model": "TA-2050", "effective_mass_g": 20, "effective_length_mm": 245, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "Sansui source search did not locate a primary spec tying Sansui TA-2050's 20 g effective mass to included/excluded headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/sansui.shtml" ] } }, { "id": "tonearm:247:grace-g-747", "display_name": "Grace G-747", "manufacturer": "Grace", "model": "G-747", "effective_mass_g": 6.5, "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:248:pro-ject-evo-12", "display_name": "Pro-Ject EVO 12", "manufacturer": "Pro-Ject", "model": "EVO 12", "effective_mass_g": 10.5, "effective_length_mm": 304.8, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:249:holbo-airbearing-turntable-system-stock-arm", "display_name": "Holbo Airbearing Turntable System (stock arm)", "manufacturer": "Holbo", "model": "Airbearing Turntable System (stock arm)", "effective_mass_g": 7.5, "effective_length_mm": 163, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:250:jelco-tk-850l-mkii", "display_name": "Jelco TK-850L MkII", "manufacturer": "Jelco", "model": "TK-850L MkII", "effective_mass_g": 13.1, "effective_length_mm": 305, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Jelco source evidence indicates standard headshell is part of the published arm mass convention for these later TK/TS arms.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/" ] } }, { "id": "tonearm:251:acoustic-solid-wtb-370", "display_name": "Acoustic Solid WTB-370", "manufacturer": "Acoustic Solid", "model": "WTB-370", "effective_mass_g": 11, "effective_length_mm": 236.7, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:252:audio-technica-at-lp7-stock-arm", "display_name": "Audio-Technica AT-LP7 stock arm", "manufacturer": "Audio-Technica", "model": "AT-LP7 stock arm", "effective_mass_g": 15, "effective_length_mm": 247, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Official page confirms AT-HS10 and cartridge-weight range including headshell; secondary retailer gives AT-HS10 at 10 g. No effective-mass basis found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Audio-Technica AT-HS10", "source_urls": [ "https://www.audio-technica.com/en-us/at-lp7", "https://www.lpgear.com/product/ATPLP07.html" ] } }, { "id": "tonearm:253:luxman-pd-444-stock-arm", "display_name": "Luxman PD-444 stock arm", "manufacturer": "Luxman", "model": "PD-444 stock arm", "effective_mass_g": 15, "effective_length_mm": 240, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "PD-444 documentation describes arm-base flexibility for mounting tonearms; no verified fixed stock arm or effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "source_urls": [ "https://audio-database.com/LUXMAN/player/pd444.html", "https://www.retronik.fr/DOCUMENTS/Audiovideo/Luxman/Luxman-Pd-444-Owners-Manual.pdf" ] } }, { "id": "tonearm:254:roksan-pug", "display_name": "Roksan Pug", "manufacturer": "Roksan", "model": "Pug", "effective_mass_g": 14, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:255:kenwood-kd-500-stock-arm", "display_name": "Kenwood KD-500 stock arm", "manufacturer": "Kenwood", "model": "KD-500 stock arm", "effective_mass_g": 20, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "KD-500/KD-550 manual/service sources verify the turntable family but did not expose an explicit effective-mass basis for the stock S-arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Kenwood stock SME-type headshell (unverified mass from seed)", "source_urls": [ "https://archive.org/download/manual_KD500_KENWOOD_EN/KD500_KENWOOD_EN_text.pdf", "https://www.vinylengine.com/library/kenwood/kd-500.shtml" ] } }, { "id": "tonearm:256:pro-ject-9c", "display_name": "Pro-Ject 9C", "manufacturer": "Pro-Ject", "model": "9C", "effective_mass_g": 8.5, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:257:acoustic-signature-ta-500", "display_name": "Acoustic Signature TA-500", "manufacturer": "Acoustic Signature", "model": "TA-500", "effective_mass_g": 9.3, "effective_length_mm": 239.3, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Official Acoustic Signature page lists 10 g effective mass and describes an integral headshell; no standard removable headshell mass is specified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "integral TA-500 NEO headshell", "source_urls": [ "https://www.acoustic-signature.com/products/tonearms/ta-500-neo/", "https://www.acoustic-signature.com/products/tonearms/ta-500-neo/" ] } }, { "id": "tonearm:258:sorane-sa-1-2b", "display_name": "Sorane SA-1.2B", "manufacturer": "Sorane", "model": "SA-1.2B", "effective_mass_g": 21, "effective_length_mm": 239, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sorane sources confirm removable headshell context and a 17 g Sorane headshell; they do not prove whether the 21 g arm effective mass includes that headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 17, "standard_headshell_model": "Sorane headshell", "source_urls": [ "https://mockingbirddistribution.com/sorane/sa1-2/", "https://osageaudio.com/Sorane.html" ] } }, { "id": "tonearm:259:origin-live-agile", "display_name": "Origin Live Agile", "manufacturer": "Origin Live", "model": "Agile", "effective_mass_g": 11, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:260:clearaudio-magnify", "display_name": "Clearaudio Magnify", "manufacturer": "Clearaudio", "model": "Magnify", "effective_mass_g": 9, "effective_length_mm": 239.3, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:261:basis-audio-vector-3", "display_name": "Basis Audio Vector 3", "manufacturer": "Basis Audio", "model": "Vector 3", "effective_mass_g": 9, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:262:funk-firm-f5", "display_name": "Funk Firm F5", "manufacturer": "Funk Firm", "model": "F5", "effective_mass_g": 9, "effective_length_mm": 239, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:263:stax-ua-70", "display_name": "Stax UA-70", "manufacturer": "Stax", "model": "UA-70", "effective_mass_g": 18, "effective_length_mm": 286, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:264:rega-acos-lustre", "display_name": "Rega Acos Lustre", "manufacturer": "Rega", "model": "Acos Lustre", "effective_mass_g": 10.5, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Acos/Rega/Lustre context confirms removable headshell family, but direct effective-mass basis for this Rega Acos Lustre record was not found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 9, "standard_headshell_model": "Acos/Rega removable headshell", "source_urls": [ "https://www.vinylengine.com/library/acos/lustre-gst-1.shtml", "https://bte-designs.weebly.com/rega-r200-rebuild.html" ] } }, { "id": "tonearm:265:sme-3012", "display_name": "SME 3012", "manufacturer": "SME", "model": "3012", "effective_mass_g": 14.5, "effective_length_mm": 305.8, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 14.5 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:266:pro-ject-10cc-evolution", "display_name": "Pro-Ject 10cc Evolution", "manufacturer": "Pro-Ject", "model": "10cc Evolution", "effective_mass_g": 9.5, "effective_length_mm": 254, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:267:nottingham-analogue-interspace-arm", "display_name": "Nottingham Analogue Interspace Arm", "manufacturer": "Nottingham Analogue", "model": "Interspace Arm", "effective_mass_g": 11, "effective_length_mm": 222, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:268:acoustic-signature-ta-3000-neo", "display_name": "Acoustic Signature TA-3000 Neo", "manufacturer": "Acoustic Signature", "model": "TA-3000 Neo", "effective_mass_g": 12, "effective_length_mm": 318.1, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:269:audio-technica-at-1009", "display_name": "Audio-Technica AT-1009", "manufacturer": "Audio-Technica", "model": "AT-1009", "effective_mass_g": 18, "effective_length_mm": 240, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Manual/library source lists 18 g effective mass and mentions design from headshell to rear knob, but does not state inclusion basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/audio-technica/at-1009.shtml", "https://www.vinylengine.com/library/audio-technica/at-1009.shtml" ] } }, { "id": "tonearm:270:grace-g-960", "display_name": "Grace G-960", "manufacturer": "Grace", "model": "G-960", "effective_mass_g": 12, "effective_length_mm": 285, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "G-960 source explicitly says HS-5 is used and gives cartridge total range; no explicit effective-mass inclusion basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 11.3, "standard_headshell_model": "Grace HS-5", "source_urls": [ "https://www.vinylengine.com/library/grace/g-960.shtml", "https://samuraiaudio.com/products/grace-hs-5-headshell-11-3g" ] } }, { "id": "tonearm:271:micro-seiki-ma-808x", "display_name": "Micro Seiki MA-808X", "manufacturer": "Micro Seiki", "model": "MA-808X", "effective_mass_g": 20, "effective_length_mm": 282, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "MA-808X secondary sources verify model family; no primary effective-mass/headshell-basis source found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Micro Seiki H-series headshell not verified", "source_urls": [ "https://hifi-wiki.com/index.php/Micro_Seiki_MA-808_X", "https://www.stereonet.com/forums/topic/338916-fs-micro-seiki-ma-808x-tonearm-reduced/" ] } }, { "id": "tonearm:272:lustre-gst-801", "display_name": "Lustre GST-801", "manufacturer": "Lustre", "model": "GST-801", "effective_mass_g": 20, "effective_length_mm": 237, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "GST-801 sources verify the model and secondary measured original headshell mass around 10.6 g; no explicit published effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10.6, "standard_headshell_model": "Acos/Lustre GST-801 original headshell", "source_urls": [ "https://www.vinylengine.com/library/acos/lustre-gst-801.shtml", "https://forum.audiogon.com/discussions/tonearm-acos-lustre-gst-801-yea-nay/post?postid=1859337" ] } }, { "id": "tonearm:273:dynavector-dv-507", "display_name": "Dynavector DV-507", "manufacturer": "Dynavector", "model": "DV-507", "effective_mass_g": 15, "effective_length_mm": 241, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Dynavector documentation for the 507 family confirms EIA detachable headshell and cartridge weight including headshell; no source found explicitly states whether the 15 g effective mass basis includes the standard headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Dynavector EIA-standard detachable headshell", "source_urls": [ "https://www.dynavector.com/audio/507mk2.php", "https://www.vinylengine.com/library/dynavector/dv-507.shtml" ] } }, { "id": "tonearm:274:saec-we-407", "display_name": "SAEC WE-407", "manufacturer": "SAEC", "model": "WE-407", "effective_mass_g": 12, "effective_length_mm": 233, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SAEC WE-407 sources/manual listings verify model family and headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 3, "standard_headshell_model": "SAEC WE-407 headshell not fully verified", "source_urls": [ "https://www.vinylengine.com/library/saec/we-407.shtml", "https://e-staff-net.com/shiryou/manual/saec_we407-23_manual.pdf" ] } }, { "id": "tonearm:275:kuzma-4point", "display_name": "Kuzma 4Point", "manufacturer": "Kuzma", "model": "4Point", "effective_mass_g": 14, "effective_length_mm": 280, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:276:sme-3010-r", "display_name": "SME 3010-R", "manufacturer": "SME", "model": "3010-R", "effective_mass_g": 12, "effective_length_mm": 239.3, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME source gives model family/effective mass context; headshell inclusion for SME 3010-R's 12 g value remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:277:rega-rb250", "display_name": "Rega RB250", "manufacturer": "Rega", "model": "RB250", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:278:linn-akito-original", "display_name": "Linn Akito (Original)", "manufacturer": "Linn", "model": "Akito (Original)", "effective_mass_g": 11, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": true }, { "id": "tonearm:279:technics-epa-1200", "display_name": "Technics EPA-1200", "manufacturer": "Technics", "model": "EPA-1200", "effective_mass_g": 12, "effective_length_mm": 230, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 12 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:280:jelco-sa-250st", "display_name": "Jelco SA-250ST", "manufacturer": "Jelco", "model": "SA-250ST", "effective_mass_g": 20, "effective_length_mm": 228, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Radiomuseum identifies SA-250ST as a straight tonearm with fixed headshell. Treat as integrated-headshell semantics rather than SME-universal removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "fixed headshell", "source_urls": [ "https://www.radiomuseum.org/r/jelco_tonearm_sa_250st.html", "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/" ] } }, { "id": "tonearm:281:ortofon-rmg-309", "display_name": "Ortofon RMG-309", "manufacturer": "Ortofon", "model": "RMG-309", "effective_mass_g": 28, "effective_length_mm": 321, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 20, "max": 40 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "RMG-309 is in Ortofon vintage/professional/SPU family; no direct explicit effective-mass basis found for this record in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Ortofon SPU/SME headshell family not verified for this record", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://ortofon.com/pages/smg_skg-212" ] } }, { "id": "tonearm:282:sme-3012-r", "display_name": "SME 3012-R", "manufacturer": "SME", "model": "3012-R", "effective_mass_g": 14, "effective_length_mm": 305.8, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 1.5, "max": 13 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 14 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:283:pro-ject-evo-8-6-carbon", "display_name": "Pro-Ject EVO 8.6 Carbon", "manufacturer": "Pro-Ject", "model": "EVO 8.6 Carbon", "effective_mass_g": 8.5, "effective_length_mm": 218.5, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true }, { "id": "tonearm:284:vpi-jmw-10-5i", "display_name": "VPI JMW-10.5i", "manufacturer": "VPI", "model": "JMW-10.5i", "effective_mass_g": 11, "effective_length_mm": 273.4, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 18 }, "match_ready": true }, { "id": "tonearm:285:denon-da-305", "display_name": "Denon DA-305", "manufacturer": "Denon", "model": "DA-305", "effective_mass_g": 8.5, "effective_length_mm": 244, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Audio Database identifies PCL-3 as the adopted headshell and cartridge mass range, but gives no effective-mass basis or shell mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Denon PCL-3", "source_urls": [ "https://audio-database.com/DENON-COLUMBIA/etc/da-305-e.html", "https://audio-database.com/DENON-COLUMBIA/etc/da-305-e.html" ] } }, { "id": "tonearm:286:audioquest-pt-6", "display_name": "AudioQuest PT-6", "manufacturer": "AudioQuest", "model": "PT-6", "effective_mass_g": 10.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:287:thorens-tp-16-mk-iii", "display_name": "Thorens TP 16 Mk III", "manufacturer": "Thorens", "model": "TP 16 Mk III", "effective_mass_g": 7.5, "effective_length_mm": 230, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 2, "max": 9 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TP 16 Mk III.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:288:lustre-gst-1", "display_name": "Lustre GST-1", "manufacturer": "Lustre", "model": "GST-1", "effective_mass_g": 14, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "GST-1 page confirms removable headshell; a secondary listing reports 15 g effective mass with an 8 g headshell, but primary confirmation is missing.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 8, "standard_headshell_model": "Acos/Lustre GST-1 headshell (secondary reported)", "source_urls": [ "https://www.vinylengine.com/library/acos/lustre-gst-1.shtml", "https://www.ebay.co.uk/itm/127638156298" ] } }, { "id": "tonearm:289:syrinx-pu2", "display_name": "Syrinx PU2", "manufacturer": "Syrinx", "model": "PU2", "effective_mass_g": 10, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:290:adc-lmf-2", "display_name": "ADC LMF-2", "manufacturer": "ADC", "model": "LMF-2", "effective_mass_g": 8, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 3.5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Two reputable secondary sources agree the headshell is removable but disagree on effective mass (6 g vs 8 g); neither explicitly states headshell inclusion basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "ADC LMF-2 removable platform headshell", "source_urls": [ "https://www.vinylengine.com/library/adc/lmf-2.shtml", "https://www.hifi-wiki.de/index.php/ADC_LMF_2" ] } }, { "id": "tonearm:291:audio-technica-atp-12t", "display_name": "Audio-Technica ATP-12T", "manufacturer": "Audio-Technica", "model": "ATP-12T", "effective_mass_g": 17, "effective_length_mm": 240, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 16 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Library source describes ATP-12T as SME-type removable-headshell arm similar to AT-1503, but no effective-mass inclusion basis found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "SME-type removable headshell; similar AT-1503 family", "source_urls": [ "https://www.vinylengine.com/library/audio-technica/atp-12t.shtml", "https://www.vinylengine.com/library/audio-technica/at-1503.shtml" ] } }, { "id": "tonearm:292:rega-rb301", "display_name": "Rega RB301", "manufacturer": "Rega", "model": "RB301", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:293:origin-live-encounter-mk4", "display_name": "Origin Live Encounter MK4", "manufacturer": "Origin Live", "model": "Encounter MK4", "effective_mass_g": 12, "effective_length_mm": 239, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 18 }, "match_ready": true }, { "id": "tonearm:294:sme-309", "display_name": "SME 309", "manufacturer": "SME", "model": "309", "effective_mass_g": 9.5, "effective_length_mm": 232.2, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 6, "max": 17 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME source gives model family/effective mass context; headshell inclusion for SME 309's 9.5 g value remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:295:grace-g-545f", "display_name": "Grace G-545F", "manufacturer": "Grace", "model": "G-545F", "effective_mass_g": 9, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Same family evidence as G-545: specially designed F-type headshell is documented, but effective-mass inclusion is not.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Grace F-type lightweight headshell", "source_urls": [ "https://www.vinylengine.com/library/grace/g-545.shtml", "https://otomon.net/products/detail/51" ] } }, { "id": "tonearm:296:fidelity-research-fr-54", "display_name": "Fidelity Research FR-54", "manufacturer": "Fidelity Research", "model": "FR-54", "effective_mass_g": 16, "effective_length_mm": 245, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 18 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Audio Database gives attached FR-S/2 shell mass 12 g and compatible cartridge weight including shell; no explicit source found for whether 16 g effective mass includes the shell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Fidelity Research FR-S/2", "source_urls": [ "https://audio-database.com/FIDELITYRESEARCH/etc/fr-54.html", "https://www.vinylengine.com/tonearm_reviews.php?make=Fidelity+Research&model=FR-54" ] } }, { "id": "tonearm:297:micro-seiki-cf-2", "display_name": "Micro Seiki CF-2", "manufacturer": "Micro Seiki", "model": "CF-2", "effective_mass_g": 9, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "CF-2 is in the same Micro family as CF-1; direct CF-2 effective-mass/headshell-basis source not found in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Micro Seiki CF-2 headshell not separately verified", "source_urls": [ "https://hifi-wiki.com/index.php/Micro_Seiki_MA-808_X", "https://www.vinylengine.com/library/micro-seiki/cf-1.shtml" ] } }, { "id": "tonearm:298:thorens-tp-16-mk-iv", "display_name": "Thorens TP 16 Mk IV", "manufacturer": "Thorens", "model": "TP 16 Mk IV", "effective_mass_g": 7.5, "effective_length_mm": 230, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 2, "max": 9 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TP 16 Mk IV.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:299:sme-3010", "display_name": "SME 3010", "manufacturer": "SME", "model": "3010", "effective_mass_g": 12, "effective_length_mm": 239.3, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME source gives model family/effective mass context; headshell inclusion for SME 3010's 12 g value remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:300:kenwood-kd-770d-stock-arm", "display_name": "Kenwood KD-770D stock arm", "manufacturer": "Kenwood", "model": "KD-770D stock arm", "effective_mass_g": 15, "effective_length_mm": 245, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 2, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "KD-770D instruction/manual pages verify the model and HS tonearm context, but no explicit effective-mass/headshell basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.manualslib.com/manual/3450592/Kenwood-Kd-770d.html", "https://www.vinylengine.com/library/kenwood/kd-770d.shtml" ] } }, { "id": "tonearm:301:moerch-dp-8-anisotropic", "display_name": "Moerch DP-8 Anisotropic", "manufacturer": "Moerch", "model": "DP-8 Anisotropic", "effective_mass_g": 8, "effective_length_mm": 230, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": true }, { "id": "tonearm:302:ortofon-rs-212d", "display_name": "Ortofon RS-212D", "manufacturer": "Ortofon", "model": "RS-212D", "effective_mass_g": 22, "effective_length_mm": 227, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 18, "max": 28 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "RS-212D is in Ortofon vintage/professional/SPU family; no direct explicit effective-mass basis found for this record in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Ortofon SPU/SME headshell family not verified for this record", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://ortofon.com/pages/smg_skg-212" ] } }, { "id": "tonearm:303:linn-lvv-basik", "display_name": "Linn LVV (Basik)", "manufacturer": "Linn", "model": "LVV (Basik)", "effective_mass_g": 10, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": true }, { "id": "tonearm:304:dual-arm-on-701", "display_name": "Dual Arm on 701", "manufacturer": "Dual", "model": "Arm on 701", "effective_mass_g": 12, "effective_length_mm": 222, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Dual 701 sources confirm a proprietary removable cartridge carrier / mount and cartridge weight range including mount, but no source found states whether the published 12 g effective mass includes that carrier.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Dual TK-24 / 269-611 carrier sled family", "source_urls": [ "https://www.dual-reference.com/tables/701.htm", "https://www.turntableneedles.com/dual-model-701-cartridge-mount-dualtk-24-dual-701" ] } }, { "id": "tonearm:305:technics-epa-99", "display_name": "Technics EPA-99", "manufacturer": "Technics", "model": "EPA-99", "effective_mass_g": 12, "effective_length_mm": 230, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 12 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:306:sumiko-ft-3", "display_name": "Sumiko FT-3", "manufacturer": "Sumiko", "model": "FT-3", "effective_mass_g": 12, "effective_length_mm": 239, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sumiko Premier MMT/FT arms are removable-headshell Jelco-style arms; retrieved manual/library does not state headshell inclusion for effective mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Jelco/Sumiko removable headshell (mass not verified)", "source_urls": [ "https://www.vinylengine.com/library/sumiko/premier-mmt.shtml", "https://ia801502.us.archive.org/11/items/manual_PREMIERMMT_OM_SUMIKO_EN/PREMIERMMT_OM_SUMIKO_EN_text.pdf" ] } }, { "id": "tonearm:307:sme-3009-series-ii", "display_name": "SME 3009 Series II", "manufacturer": "SME", "model": "3009 Series II", "effective_mass_g": 12.5, "effective_length_mm": 228, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 12.5 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:308:fidelity-research-fr-64fx", "display_name": "Fidelity Research FR-64fx", "manufacturer": "Fidelity Research", "model": "FR-64fx", "effective_mass_g": 20, "effective_length_mm": 245, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 10, "max": 38 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Vinyl Engine reports FR64 FX effective mass 20 g, and secondary listings associate RS-121 12 g headshell with FR-64FX/FR-66FX; no source found explicitly states inclusion basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Fidelity Research RS-121", "source_urls": [ "https://www.vinylengine.com/library/fidelity-research/fr-64.shtml", "https://reverb.com/item/91713392-fidelity-research-rs-121-headshell-for-fr-64fx-fr-66fx-etc-12-0g" ] } }, { "id": "tonearm:309:audio-technica-at-lp1240-usbxp-stock-arm", "display_name": "Audio-Technica AT-LP1240-USBXP stock arm", "manufacturer": "Audio-Technica", "model": "AT-LP1240-USBXP stock arm", "effective_mass_g": 14, "effective_length_mm": 230, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Official page confirms AT-HS1 detachable headshell and cartridge range with headshell, but no effective-mass inclusion basis or headshell mass was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Audio-Technica AT-HS1", "source_urls": [ "https://www.audio-technica.com/en-us/at-lp1240-usbxp", "https://www.audio-technica.com/en-us/at-lp1240-usbxp" ] } }, { "id": "tonearm:310:sony-pua-1600l", "display_name": "Sony PUA-1600L", "manufacturer": "Sony", "model": "PUA-1600L", "effective_mass_g": 15, "effective_length_mm": 286, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 2, "max": 18 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sony PUA source identifies the universal PUA arm family, but does not explicitly state whether the 15 g value includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Sony universal removable headshell family (not mass-verified)", "source_urls": [ "https://www.vinylengine.com/library/sony/pua-1500.shtml", "https://audio-database.com/SONY-ESPRIT/etc/pua-1500.html" ] } }, { "id": "tonearm:311:jelco-tk-850m", "display_name": "Jelco TK-850M", "manufacturer": "Jelco", "model": "TK-850M", "effective_mass_g": 13.8, "effective_length_mm": 254, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Jelco source evidence indicates standard headshell is part of the published arm mass convention for these later TK/TS arms.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://hifi12a.de/JELCO-TK-850/en" ] } }, { "id": "tonearm:312:rega-rb3000", "display_name": "Rega RB3000", "manufacturer": "Rega", "model": "RB3000", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:313:thorens-btp-250s", "display_name": "Thorens BTP-250S", "manufacturer": "Thorens", "model": "BTP-250S", "effective_mass_g": 17, "effective_length_mm": 232.8, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 6, "max": 16 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens source context found, but Thorens BTP-250S's SME/universal headshell effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:314:linn-lvi-basik", "display_name": "Linn LVI (Basik)", "manufacturer": "Linn", "model": "LVI (Basik)", "effective_mass_g": 10.5, "effective_length_mm": 229, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Linn Basik/LVX documentation was found, but no source explicitly tied the LVI/Basik S-shaped variant effective mass to headshell inclusion.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Linn Basik/LVI headshell not verified", "source_urls": [ "https://docs.linn.co.uk/wiki/images/7/72/Basik_arm_info.PDF", "https://www.vinylengine.com/library/linn/basik-lvx.shtml" ] } }, { "id": "tonearm:315:signet-xk50", "display_name": "Signet XK50", "manufacturer": "Signet", "model": "XK50", "effective_mass_g": 9, "effective_length_mm": 229, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "Signet XK50 is proprietary-risk; no reliable source in this pass states how the 9 g effective mass treats its headshell/tube assembly.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/audio-technica.shtml" ] } }, { "id": "tonearm:316:helius-scorpio-iv", "display_name": "Helius Scorpio IV", "manufacturer": "Helius", "model": "Scorpio IV", "effective_mass_g": 9, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true }, { "id": "tonearm:317:systemdek-profile-ii", "display_name": "Systemdek Profile II", "manufacturer": "Systemdek", "model": "Profile II", "effective_mass_g": 8, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:318:ittok-lvii", "display_name": "Ittok LVII", "manufacturer": "Ittok", "model": "LVII", "effective_mass_g": 11.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:319:sony-pua-114", "display_name": "Sony PUA-114", "manufacturer": "Sony", "model": "PUA-114", "effective_mass_g": 16, "effective_length_mm": 245, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 16 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sony PUA source identifies the universal PUA arm family, but does not explicitly state whether the 16 g value includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Sony universal removable headshell family (not mass-verified)", "source_urls": [ "https://www.vinylengine.com/library/sony/pua-1500.shtml", "https://audio-database.com/SONY-ESPRIT/etc/pua-1500.html" ] } }, { "id": "tonearm:320:empire-980", "display_name": "Empire 980", "manufacturer": "Empire", "model": "980", "effective_mass_g": 18, "effective_length_mm": 229, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Secondary sources distinguish the 980 from the 98 by a fixed headshell and proprietary plastic cartridge mounting plate; therefore the headshell is part of the arm assembly, but the exact plate mass is not stated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Empire 980 fixed headshell / BM990-type cartridge mounting plate", "source_urls": [ "https://www.vinylengine.com/library/empire/980.shtml", "https://www.audiocircle.com/index.php?topic=118980.0" ] } }, { "id": "tonearm:321:sme-series-iii", "display_name": "SME Series III", "manufacturer": "SME", "model": "Series III", "effective_mass_g": 5, "effective_length_mm": 229, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 1, "max": 8 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME Series III is a low-mass proprietary SME arm; retrieved references do not explicitly state headshell inclusion for the 5 g value.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:322:linn-akito-second-gen", "display_name": "Linn Akito (Second Gen)", "manufacturer": "Linn", "model": "Akito (Second Gen)", "effective_mass_g": 11, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": true }, { "id": "tonearm:323:denon-da-401", "display_name": "Denon DA-401", "manufacturer": "Denon", "model": "DA-401", "effective_mass_g": 7.5, "effective_length_mm": 244, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Audio Database says the arm uses a dedicated rigid resin headshell and lists effective mass 7.5 g excluding cartridge, supporting headshell-included arm mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "dedicated rigid resin Denon headshell", "source_urls": [ "https://audio-database.com/DENON-COLUMBIA/etc/da-401.html", "https://audio-database.com/DENON-COLUMBIA/etc/da-401.html" ] } }, { "id": "tonearm:324:ortofon-as-309s", "display_name": "Ortofon AS-309S", "manufacturer": "Ortofon", "model": "AS-309S", "effective_mass_g": 18, "effective_length_mm": 326, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 15, "max": 35 }, "match_ready": true, "effective_mass_headshell_basis": "excludes_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Official Ortofon AS-309S page explicitly states effective mass without headshell is 4.0 g.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "standard_headshell_model": "User-selected SME headshell; not supplied as fixed reference", "source_urls": [ "https://ortofon.com/pages/as-309s-12", "https://www.sound-at-home.de/ortofon/inhalt/de/pdf/as.pdf" ] } }, { "id": "tonearm:325:helius-orion-mk4", "display_name": "Helius Orion MK4", "manufacturer": "Helius", "model": "Orion MK4", "effective_mass_g": 11, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true }, { "id": "tonearm:326:alphason-delta", "display_name": "Alphason Delta", "manufacturer": "Alphason", "model": "Delta", "effective_mass_g": 11.5, "effective_length_mm": 229, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Secondary library source reports an effective mass different from seed, but no source was found that states headshell inclusion or reference shell mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/alphason/delta.shtml" ] } }, { "id": "tonearm:327:stax-ua-90", "display_name": "Stax UA-90", "manufacturer": "Stax", "model": "UA-90", "effective_mass_g": 16, "effective_length_mm": 240, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 20 }, "match_ready": true }, { "id": "tonearm:328:saec-we-317", "display_name": "SAEC WE-317", "manufacturer": "SAEC", "model": "WE-317", "effective_mass_g": 18, "effective_length_mm": 233, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 35 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SAEC WE-317 sources/manual listings verify model family and headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SAEC WE-317 headshell not fully verified", "source_urls": [ "https://www.vinylengine.com/library/saec/we-308.shtml", "https://audio-database.com/SAEC/etc/we-308.html" ] } }, { "id": "tonearm:329:mayware-formula-v", "display_name": "Mayware Formula V", "manufacturer": "Mayware", "model": "Formula V", "effective_mass_g": 6.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:330:pro-ject-evo-9-ca-premium", "display_name": "Pro-Ject EVO 9 CA Premium", "manufacturer": "Pro-Ject", "model": "EVO 9 CA Premium", "effective_mass_g": 8, "effective_length_mm": 230, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 14 }, "match_ready": true }, { "id": "tonearm:331:hadcock-gh-220", "display_name": "Hadcock GH 220", "manufacturer": "Hadcock", "model": "GH 220", "effective_mass_g": 7, "effective_length_mm": 228.6, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:332:michell-tecnoarm-2", "display_name": "Michell TecnoArm 2", "manufacturer": "Michell", "model": "TecnoArm 2", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 13 }, "match_ready": true }, { "id": "tonearm:333:sme-310", "display_name": "SME 310", "manufacturer": "SME", "model": "310", "effective_mass_g": 9.5, "effective_length_mm": 232.2, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 6, "max": 17 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME source gives model family/effective mass context; headshell inclusion for SME 310's 9.5 g value remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:334:grace-g-945-silver", "display_name": "Grace G-945 Silver", "manufacturer": "Grace", "model": "G-945 Silver", "effective_mass_g": 8, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "G-945 brochure/library evidence confirms the model family, but headshell mass and effective-mass basis were not explicitly tied to G-945 Silver.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 11.3, "standard_headshell_model": "Grace HS-5", "source_urls": [ "https://www.vinylengine.com/library/grace/g-945.shtml", "https://samuraiaudio.com/products/grace-hs-5-headshell-11-3g" ] } }, { "id": "tonearm:335:denon-da-308", "display_name": "Denon DA-308", "manufacturer": "Denon", "model": "DA-308", "effective_mass_g": 18, "effective_length_mm": 307, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 25 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Audio Database gives cartridge range including shell, attached PCL-7, and head shell dead weight 8.5 g; effective-mass basis remains unstated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 8.5, "standard_headshell_model": "Denon PCL-7", "source_urls": [ "https://audio-database.com/DENON-COLUMBIA/etc/da-308.html", "https://audio-database.com/DENON-COLUMBIA/etc/da-308.html" ] } }, { "id": "tonearm:336:acoustic-research-ar-ar-tonearm-the-turntable", "display_name": "Acoustic Research (AR) AR Tonearm (The Turntable)", "manufacturer": "Acoustic Research (AR)", "model": "AR Tonearm (The Turntable)", "effective_mass_g": 12, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:337:sony-pua-1500s", "display_name": "Sony PUA-1500S", "manufacturer": "Sony", "model": "PUA-1500S", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 16 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sony PUA source identifies the universal PUA arm family, but does not explicitly state whether the 12 g value includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Sony universal removable headshell family (not mass-verified)", "source_urls": [ "https://www.vinylengine.com/library/sony/pua-1500.shtml", "https://audio-database.com/SONY-ESPRIT/etc/pua-1500.html" ] } }, { "id": "tonearm:338:fidelity-research-fr-12", "display_name": "Fidelity Research FR-12", "manufacturer": "Fidelity Research", "model": "FR-12", "effective_mass_g": 12, "effective_length_mm": 245, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Audio Database gives compatible cartridge weight including shell and attached shell weight FR-S/6 12 g for FR-14/FR-12, but not whether 12 g effective mass includes the shell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Fidelity Research FR-S/6", "source_urls": [ "https://audio-database.com/FIDELITYRESEARCH/etc/fr-14.html", "https://www.vinylengine.com/library/fidelity-research/fr-12.shtml" ] } }, { "id": "tonearm:339:helius-cygnus", "display_name": "Helius Cygnus", "manufacturer": "Helius", "model": "Cygnus", "effective_mass_g": 14, "effective_length_mm": 250, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 18 }, "match_ready": true }, { "id": "tonearm:340:rega-rb200", "display_name": "Rega RB200", "manufacturer": "Rega", "model": "RB200", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Vinyl Engine Rega R200 page gives effective mass 16 g and removable headshell, but does not explicitly say if that includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "standard_headshell_model": "Rega R200 removable headshell", "source_urls": [ "https://www.vinylengine.com/library/rega/r200.shtml", "https://manualmachine.com/regaresearch/r200/2368994-owners-manual/" ] } }, { "id": "tonearm:341:ortofon-rkg-309", "display_name": "Ortofon RKG-309", "manufacturer": "Ortofon", "model": "RKG-309", "effective_mass_g": 28, "effective_length_mm": 321, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 20, "max": 40 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "RKG/RMG vintage Ortofon sources indicate SPU-oriented professional arm family but no explicit RKG-309 effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SPU-A / RKG proprietary assembly", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://www.stereonet.com/forums/topic/571452-ortofon-experts-what-tonearm-have-i-got-here/" ] } }, { "id": "tonearm:342:audio-technica-at-1503-mkiii", "display_name": "Audio-Technica AT-1503 MkIII", "manufacturer": "Audio-Technica", "model": "AT-1503 MkIII", "effective_mass_g": 20, "effective_length_mm": 257, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 30 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Library/source reports detachable headshell, LT-12 at 12.5 g, and AT-1503 III effective mass 19 g; it does not explicitly state whether 19 g includes the shell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "reference_headshell_mass_g": 12.5, "standard_headshell_model": "Audio-Technica LT-12 headshell", "source_urls": [ "https://www.vinylengine.com/library/audio-technica/at-1503.shtml", "https://www.vinylengine.com/library/audio-technica/at-1503.shtml" ] } }, { "id": "tonearm:343:linn-ittok-lviii", "display_name": "Linn Ittok LVIII", "manufacturer": "Linn", "model": "Ittok LVIII", "effective_mass_g": 11.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:344:sme-312", "display_name": "SME 312", "manufacturer": "SME", "model": "312", "effective_mass_g": 14, "effective_length_mm": 308.8, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 18 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME source gives model family/effective mass context; headshell inclusion for SME 312's 14 g value remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:345:pro-ject-9cc", "display_name": "Pro-Ject 9cc", "manufacturer": "Pro-Ject", "model": "9cc", "effective_mass_g": 8.5, "effective_length_mm": 230, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 10 }, "match_ready": true }, { "id": "tonearm:346:micro-seiki-ma-505-mkiii", "display_name": "Micro Seiki MA-505 MkIII", "manufacturer": "Micro Seiki", "model": "MA-505 MkIII", "effective_mass_g": 14.5, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "MA-505 MkIII manual/library sources verify removable headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Micro Seiki standard headshell (model not verified)", "source_urls": [ "https://www.vinylengine.com/library/micro-seiki/ma-505.shtml", "https://ia800105.us.archive.org/6/items/manual_MA505_SM_MICROSEIK_EN/MA505_SM_MICROSEIK_EN_text.pdf" ] } }, { "id": "tonearm:347:technics-epa-501l", "display_name": "Technics EPA-501L", "manufacturer": "Technics", "model": "EPA-501L", "effective_mass_g": 9, "effective_length_mm": 250, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 9 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:348:saec-we-308sx", "display_name": "SAEC WE-308SX", "manufacturer": "SAEC", "model": "WE-308SX", "effective_mass_g": 18, "effective_length_mm": 240, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 8, "max": 26 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SAEC WE-308SX sources/manual listings verify model family and headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SAEC WE-308SX headshell not fully verified", "source_urls": [ "https://www.vinylengine.com/library/saec/we-308.shtml", "https://audio-database.com/SAEC/etc/we-308.html" ] } }, { "id": "tonearm:349:jelco-sa-750e", "display_name": "Jelco SA-750E", "manufacturer": "Jelco", "model": "SA-750E", "effective_mass_g": 20, "effective_length_mm": 254, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Dealer clarification says Jelco effective-mass figures are arm + headshell; legacy SA-family source confirms removable headshell where available.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.vinylengine.com/library/jelco/sa-750d.shtml" ] } }, { "id": "tonearm:350:thorens-tp-11-mk-iii", "display_name": "Thorens TP 11 Mk III", "manufacturer": "Thorens", "model": "TP 11 Mk III", "effective_mass_g": 7.5, "effective_length_mm": 230, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 2, "max": 9 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TP 11 Mk III.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:351:linn-basik-plus", "display_name": "Linn Basik Plus", "manufacturer": "Linn", "model": "Basik Plus", "effective_mass_g": 10.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": true }, { "id": "tonearm:352:audio-technica-at-1007", "display_name": "Audio-Technica AT-1007", "manufacturer": "Audio-Technica", "model": "AT-1007", "effective_mass_g": 18, "effective_length_mm": 229, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 20 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Source gives 6 g headshell and effective mass 13 g with AT-VM35 cartridge, which is not a clean arm-only mass basis for Engrove.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 6, "standard_headshell_model": "Audio-Technica 6 g UL type headshell", "source_urls": [ "https://www.vinylengine.com/library/audio-technica/at-1007.shtml", "https://www.vinylengine.com/library/audio-technica/at-1007.shtml" ] } }, { "id": "tonearm:353:sony-pua-1600s", "display_name": "Sony PUA-1600S", "manufacturer": "Sony", "model": "PUA-1600S", "effective_mass_g": 12.5, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 2, "max": 18 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sony PUA source identifies the universal PUA arm family, but does not explicitly state whether the 12.5 g value includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Sony universal removable headshell family (not mass-verified)", "source_urls": [ "https://www.vinylengine.com/library/sony/pua-1500.shtml", "https://audio-database.com/SONY-ESPRIT/etc/pua-1500.html" ] } }, { "id": "tonearm:354:sansui-fr-3060", "display_name": "Sansui FR-3060", "manufacturer": "Sansui", "model": "FR-3060", "effective_mass_g": 18, "effective_length_mm": 230, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "Sansui source search did not locate a primary spec tying Sansui FR-3060's 18 g effective mass to included/excluded headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/sansui.shtml" ] } }, { "id": "tonearm:355:pro-ject-xtension-9-evo", "display_name": "Pro-Ject Xtension 9 EVO", "manufacturer": "Pro-Ject", "model": "Xtension 9 EVO", "effective_mass_g": 8.5, "effective_length_mm": 230, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 14 }, "match_ready": true }, { "id": "tonearm:356:rega-rb110", "display_name": "Rega RB110", "manufacturer": "Rega", "model": "RB110", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": true }, { "id": "tonearm:357:thorens-tp-14", "display_name": "Thorens TP 14", "manufacturer": "Thorens", "model": "TP 14", "effective_mass_g": 16, "effective_length_mm": 230, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 2, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens source context found, but Thorens TP 14's effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:358:jelco-ts-550s", "display_name": "Jelco TS-550S", "manufacturer": "Jelco", "model": "TS-550S", "effective_mass_g": 13, "effective_length_mm": 229, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Jelco source evidence indicates standard headshell is part of the published arm mass convention for these later TK/TS arms.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://respectphono.de/en/jelco-ts-550-s-9-tonearm.html" ] } }, { "id": "tonearm:359:denon-da-303", "display_name": "Denon DA-303", "manufacturer": "Denon", "model": "DA-303", "effective_mass_g": 18, "effective_length_mm": 230, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 17 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Audio Heritage describes DA-303 as integrated/developed for DL-103 with supplied headshell and gives shell weight about 5 g; no effective-mass basis found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "reference_headshell_mass_g": 5, "standard_headshell_model": "Denon DA-303 dedicated 4P headshell", "source_urls": [ "https://audio-heritage.jp/DENON/etc/da-303.html", "https://audio-heritage.jp/DENON/etc/da-303.html" ] } }, { "id": "tonearm:360:saec-we-308l", "display_name": "SAEC WE-308L", "manufacturer": "SAEC", "model": "WE-308L", "effective_mass_g": 18, "effective_length_mm": 285, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 8, "max": 26 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SAEC WE-308L sources/manual listings verify model family and headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SAEC WE-308L headshell not fully verified", "source_urls": [ "https://www.vinylengine.com/library/saec/we-308.shtml", "https://audio-database.com/SAEC/etc/we-308.html" ] } }, { "id": "tonearm:361:sme-series-310", "display_name": "SME Series 310", "manufacturer": "SME", "model": "Series 310", "effective_mass_g": 10, "effective_length_mm": 239.3, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 16 }, "match_ready": true }, { "id": "tonearm:362:sme-3009-r", "display_name": "SME 3009 R", "manufacturer": "SME", "model": "3009 R", "effective_mass_g": 12.7, "effective_length_mm": 233.2, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 12.7 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:363:rega-rb800", "display_name": "Rega RB800", "manufacturer": "Rega", "model": "RB800", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:364:technics-epa-100-mk2", "display_name": "Technics EPA-100 Mk2", "manufacturer": "Technics", "model": "EPA-100 Mk2", "effective_mass_g": 20, "effective_length_mm": 250, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 20 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:365:jelco-sa-250l", "display_name": "Jelco SA-250L", "manufacturer": "Jelco", "model": "SA-250L", "effective_mass_g": 22, "effective_length_mm": 305, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Dealer clarification says Jelco effective-mass figures are arm + headshell; legacy SA-family source confirms removable headshell where available.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.lpgear.com/product/JELCOSA250.html" ] } }, { "id": "tonearm:366:ortofon-skg-212", "display_name": "Ortofon SKG-212", "manufacturer": "Ortofon", "model": "SKG-212", "effective_mass_g": 18, "effective_length_mm": 227, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 7, "max": 19 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SKG-212 is in Ortofon vintage/professional/SPU family; no direct explicit effective-mass basis found for this record in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Ortofon SPU/SME headshell family not verified for this record", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://ortofon.com/pages/smg_skg-212" ] } }, { "id": "tonearm:367:syrinx-pu1", "display_name": "Syrinx PU1", "manufacturer": "Syrinx", "model": "PU1", "effective_mass_g": 9, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:368:sumiko-premier-mmt", "display_name": "Sumiko Premier MMT", "manufacturer": "Sumiko", "model": "Premier MMT", "effective_mass_g": 12, "effective_length_mm": 228, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Sumiko Premier MMT/FT arms are removable-headshell Jelco-style arms; retrieved manual/library does not state headshell inclusion for effective mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Jelco/Sumiko removable headshell (mass not verified)", "source_urls": [ "https://www.vinylengine.com/library/sumiko/premier-mmt.shtml", "https://ia801502.us.archive.org/11/items/manual_PREMIERMMT_OM_SUMIKO_EN/PREMIERMMT_OM_SUMIKO_EN_text.pdf" ] } }, { "id": "tonearm:369:grace-g-640p", "display_name": "Grace G-640P", "manufacturer": "Grace", "model": "G-640P", "effective_mass_g": 15, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Vinyl Engine gives G-640P cartridge/headshell weight range but no effective-mass-basis statement.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Grace G-640P headshell", "source_urls": [ "https://www.vinylengine.com/library/grace/g640p.shtml", "https://www.hifido.co.jp/26-49316-07698-00.html?LNG=E" ] } }, { "id": "tonearm:370:helius-aureus", "display_name": "Helius Aureus", "manufacturer": "Helius", "model": "Aureus", "effective_mass_g": 10, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true }, { "id": "tonearm:371:pioneer-pa-5000", "display_name": "Pioneer PA-5000", "manufacturer": "Pioneer", "model": "PA-5000", "effective_mass_g": 18, "effective_length_mm": 282, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 32 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Pioneer PA-5000 sources verify universal headshell joint/removable headshell, but do not explicitly state whether effective mass includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Pioneer magnesium/SME-type headshell not verified", "source_urls": [ "https://www.vinylengine.com/library/pioneer/pa-5000.shtml", "https://audio-database.com/PIONEER-EXCLUSIVE/etc/pa-5000.html" ] } }, { "id": "tonearm:372:stax-ua-7cf", "display_name": "Stax UA-7CF", "manufacturer": "Stax", "model": "UA-7CF", "effective_mass_g": 8, "effective_length_mm": 240, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true }, { "id": "tonearm:373:thorens-tp-16-mk-ii", "display_name": "Thorens TP 16 Mk II", "manufacturer": "Thorens", "model": "TP 16 Mk II", "effective_mass_g": 15, "effective_length_mm": 230, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TP 16 Mk II.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:374:rega-rb100", "display_name": "Rega RB100", "manufacturer": "Rega", "model": "RB100", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": true }, { "id": "tonearm:375:fidelity-research-fr-66fx", "display_name": "Fidelity Research FR-66fx", "manufacturer": "Fidelity Research", "model": "FR-66fx", "effective_mass_g": 25, "effective_length_mm": 307, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 10, "max": 38 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Secondary sources identify FR-66FX as the long FX version and RS-121 12 g as the associated FX headshell, but no reliable source was found for the 25 g effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Fidelity Research RS-121", "source_urls": [ "https://soundgate.net/old_version/html/product/MjI3.highend", "https://reverb.com/item/91713392-fidelity-research-rs-121-headshell-for-fr-64fx-fr-66fx-etc-12-0g" ] } }, { "id": "tonearm:376:saec-we-4700", "display_name": "SAEC WE-4700", "manufacturer": "SAEC", "model": "WE-4700", "effective_mass_g": 12, "effective_length_mm": 233, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SAEC WE-4700 sources/manual listings verify model family and headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SAEC WE-4700 headshell not fully verified", "source_urls": [ "https://www.vinylengine.com/library/saec/we-407.shtml", "https://e-staff-net.com/shiryou/manual/saec_we407-23_manual.pdf" ] } }, { "id": "tonearm:377:rega-rb2000", "display_name": "Rega RB2000", "manufacturer": "Rega", "model": "RB2000", "effective_mass_g": 10.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:378:thorens-tp-13-kugelarm", "display_name": "Thorens TP 13 (Kugelarm)", "manufacturer": "Thorens", "model": "TP 13 (Kugelarm)", "effective_mass_g": 16, "effective_length_mm": 230, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens source context found, but Thorens TP 13 (Kugelarm)'s effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:379:ortofon-ta-210", "display_name": "Ortofon TA-210", "manufacturer": "Ortofon", "model": "TA-210", "effective_mass_g": 5, "effective_length_mm": 329, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 18, "max": 28 }, "match_ready": true, "effective_mass_headshell_basis": "excludes_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "TA-210 user guide explicitly lists effective mass without headshell 5 g and supplied LH-2000E headshell 15.5 g.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 15.5, "standard_headshell_model": "Ortofon LH-2000E", "source_urls": [ "https://www.studio-22.com/pdf/TA-210UserGuide_web.pdf", "https://www.manualslib.com/manual/748559/Ortofon-Ta-210.html" ] } }, { "id": "tonearm:380:technics-epa-100p", "display_name": "Technics EPA-100P", "manufacturer": "Technics", "model": "EPA-100P", "effective_mass_g": 22, "effective_length_mm": 250, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 22 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:381:saec-we-308", "display_name": "SAEC WE-308", "manufacturer": "SAEC", "model": "WE-308", "effective_mass_g": 18, "effective_length_mm": 240, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 8, "max": 26 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SAEC WE-308 sources/manual listings verify model family and headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SAEC WE-308 headshell not fully verified", "source_urls": [ "https://www.vinylengine.com/library/saec/we-308.shtml", "https://audio-database.com/SAEC/etc/we-308.html" ] } }, { "id": "tonearm:382:linn-ittok-lviii-mk2", "display_name": "Linn Ittok LVIII Mk2", "manufacturer": "Linn", "model": "Ittok LVIII Mk2", "effective_mass_g": 11.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:383:sme-series-309", "display_name": "SME Series 309", "manufacturer": "SME", "model": "Series 309", "effective_mass_g": 9.5, "effective_length_mm": 232.2, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 6, "max": 17 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME source gives model family/effective mass context; headshell inclusion for SME Series 309's 9.5 g value remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:384:fidelity-research-fr-64", "display_name": "Fidelity Research FR-64", "manufacturer": "Fidelity Research", "model": "FR-64", "effective_mass_g": 35, "effective_length_mm": 245, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 10, "max": 38 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Audio Database confirms FR-64 attached shell FR-S/3 19.8 g, while a specialist FR64 comparison says plain FR64 mass is often estimated around 30 g, not the seed value 35 g. This creates a model/value conflict.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "reference_headshell_mass_g": 19.8, "standard_headshell_model": "Fidelity Research FR-S/3", "source_urls": [ "https://audio-database.com/FIDELITYRESEARCH/etc/fr-64.html", "https://www.audioantiquary.com/en-us/custom/differences-between-the-fr64-various-versions/" ] } }, { "id": "tonearm:385:grace-g-704", "display_name": "Grace G-704", "manufacturer": "Grace", "model": "G-704", "effective_mass_g": 6.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true }, { "id": "tonearm:386:rega-rb251", "display_name": "Rega RB251", "manufacturer": "Rega", "model": "RB251", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:387:pro-ject-evo-10cc", "display_name": "Pro-Ject EVO 10cc", "manufacturer": "Pro-Ject", "model": "EVO 10cc", "effective_mass_g": 9.5, "effective_length_mm": 254, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 14 }, "match_ready": true }, { "id": "tonearm:388:grace-g-560f", "display_name": "Grace G-560F", "manufacturer": "Grace", "model": "G-560F", "effective_mass_g": 15, "effective_length_mm": 285, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 30 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "No direct source found for G-560F headshell/effective-mass basis. Family parts evidence only.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Grace G-560F original/F-type headshell", "source_urls": [ "https://samuraiaudio.com/products/grace-g540-g545-g560-g565-tonearm-weight-30-4g" ] } }, { "id": "tonearm:389:rega-rb900", "display_name": "Rega RB900", "manufacturer": "Rega", "model": "RB900", "effective_mass_g": 10, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:390:pro-ject-evo-12cc", "display_name": "Pro-Ject EVO 12cc", "manufacturer": "Pro-Ject", "model": "EVO 12cc", "effective_mass_g": 10.5, "effective_length_mm": 304.8, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 14 }, "match_ready": true }, { "id": "tonearm:391:jelco-sa-250t", "display_name": "Jelco SA-250T", "manufacturer": "Jelco", "model": "SA-250T", "effective_mass_g": 20, "effective_length_mm": 229, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Dealer clarification says Jelco effective-mass figures are arm + headshell; legacy SA-family source confirms removable headshell where available.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.lpgear.com/product/JELCOSA250.html" ] } }, { "id": "tonearm:392:audio-technica-at-1003", "display_name": "Audio-Technica AT-1003", "manufacturer": "Audio-Technica", "model": "AT-1003", "effective_mass_g": 20, "effective_length_mm": 257, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 30 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "Japanese used-equipment source confirms universal-type arm and supplied shell, but no effective-mass basis or shell mass was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Audio-Technica shell supplied with AT-1003", "source_urls": [ "https://www.hifido.co.jp/sold/12-63709-44236-00.html", "https://www.hifido.co.jp/sold/12-63709-44236-00.html" ] } }, { "id": "tonearm:393:denon-da-302", "display_name": "Denon DA-302", "manufacturer": "Denon", "model": "DA-302", "effective_mass_g": 20, "effective_length_mm": 230, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 17 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-01", "effective_mass_headshell_note": "A seller source gives DA-302/DA-303 headshell mass 5.2 g; no primary effective-mass basis found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-01", "registry_file": "engrove_headshell_effective_mass_registry_HS-01_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 5.2, "standard_headshell_model": "Denon DA-302/DA-303 dedicated headshell", "source_urls": [ "https://samuraiaudio.com/products/denon-headshell-for-da-302-da-303-5-2g", "https://hiendaudio-world.com/audio-market/tonearms-denon-da-302-ad-260" ] } }, { "id": "tonearm:394:micro-seiki-ma-701", "display_name": "Micro Seiki MA-701", "manufacturer": "Micro Seiki", "model": "MA-701", "effective_mass_g": 15, "effective_length_mm": 222, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 16 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "No primary MA-701 effective-mass/headshell-basis source found in this pass; only family/source-index context.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://micro-seiki.nl/", "https://hifi-wiki.com/index.php/Micro_Seiki_MA-808_X" ] } }, { "id": "tonearm:395:sme-series-ii", "display_name": "SME Series II", "manufacturer": "SME", "model": "Series II", "effective_mass_g": 12.5, "effective_length_mm": 228, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME source gives model family/effective mass context; headshell inclusion for SME Series II's 12.5 g value remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:396:sme-series-iv", "display_name": "SME Series IV", "manufacturer": "SME", "model": "Series IV", "effective_mass_g": 11, "effective_length_mm": 232.2, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 16 }, "match_ready": true }, { "id": "tonearm:397:rega-rb600", "display_name": "Rega RB600", "manufacturer": "Rega", "model": "RB600", "effective_mass_g": 11, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:398:technics-epa-500h", "display_name": "Technics EPA-500H", "manufacturer": "Technics", "model": "EPA-500H", "effective_mass_g": 20, "effective_length_mm": 250, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 20 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:399:jelco-sa-50", "display_name": "Jelco SA-50", "manufacturer": "Jelco", "model": "SA-50", "effective_mass_g": 12, "effective_length_mm": 228, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Only generic Jelco/removable-headshell evidence found; effective-mass basis remains unknown.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.lpgear.com/product/JELCOSA250.html" ] } }, { "id": "tonearm:400:ortofon-as-212s", "display_name": "Ortofon AS-212S", "manufacturer": "Ortofon", "model": "AS-212S", "effective_mass_g": 18, "effective_length_mm": 231, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 15, "max": 35 }, "match_ready": true, "effective_mass_headshell_basis": "excludes_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Official Ortofon AS-212S page explicitly says effective mass is without headshell: 3.5 g.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "standard_headshell_model": "User-selected SME headshell; not supplied as fixed reference", "source_urls": [ "https://ortofon.com/pages/as-212s-9", "https://www.nadel-shop.de/project/tonarm/of212309sinfo.pdf" ] } }, { "id": "tonearm:401:syrinx-pu7", "display_name": "Syrinx PU7", "manufacturer": "Syrinx", "model": "PU7", "effective_mass_g": 11, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true }, { "id": "tonearm:402:sumiko-sme-309", "display_name": "Sumiko SME 309", "manufacturer": "Sumiko", "model": "SME 309", "effective_mass_g": 9.5, "effective_length_mm": 232.2, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 6, "max": 17 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Record appears to duplicate SME 309 under Sumiko; source basis follows SME family evidence but inclusion remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:403:helius-scorpio-iii", "display_name": "Helius Scorpio III", "manufacturer": "Helius", "model": "Scorpio III", "effective_mass_g": 9, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true }, { "id": "tonearm:404:pioneer-pl-518-stock-arm", "display_name": "Pioneer PL-518 stock arm", "manufacturer": "Pioneer", "model": "PL-518 stock arm", "effective_mass_g": 18, "effective_length_mm": 221, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "PL-518 stock arm sources verify stock/removable headshell context, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "Pioneer stock SME-style headshell", "source_urls": [ "https://vintage-turntable.com/pioneer-pl-41.html", "https://www.vinylengine.com/turntable_forum/viewtopic.php?t=128890" ] } }, { "id": "tonearm:405:thorens-tp-11", "display_name": "Thorens TP 11", "manufacturer": "Thorens", "model": "TP 11", "effective_mass_g": 7.5, "effective_length_mm": 230, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 2, "max": 9 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TP 11.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:406:adc-alt-1", "display_name": "ADC ALT-1", "manufacturer": "ADC", "model": "ALT-1", "effective_mass_g": 7, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:407:fidelity-research-fr-66s", "display_name": "Fidelity Research FR-66S", "manufacturer": "Fidelity Research", "model": "FR-66S", "effective_mass_g": 38, "effective_length_mm": 307, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 10, "max": 38 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Audio Database gives FR-66S shell options and cartridge weight including shell, but no direct statement that the 38 g effective mass includes the attached shell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 19.8, "standard_headshell_model": "Fidelity Research FR-S/3 or FR-S/5", "source_urls": [ "https://audio-database.com/FIDELITYRESEARCH/etc/fr-66s.html", "https://www.stereonet.com/forums/topic/246114-fidelity-research-fr-66s-tonearm/" ] } }, { "id": "tonearm:408:saec-we-506-30", "display_name": "SAEC WE-506/30", "manufacturer": "SAEC", "model": "WE-506/30", "effective_mass_g": 12.5, "effective_length_mm": 307, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 35 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SAEC WE-506/30 sources/manual listings verify model family and headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SAEC WE-506/30 headshell not fully verified", "source_urls": [ "https://www.vinylengine.com/library/saec/we-407.shtml", "https://e-staff-net.com/shiryou/manual/saec_we407-23_manual.pdf" ] } }, { "id": "tonearm:409:grace-g-860f", "display_name": "Grace G-860F", "manufacturer": "Grace", "model": "G-860F", "effective_mass_g": 15, "effective_length_mm": 285, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 30 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Only library/market sources found for the long G-860F; no effective-mass-basis or reference headshell mass was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Grace G-860F original headshell", "source_urls": [ "https://www.vinylengine.com/library/grace/g860f.shtml", "https://reverb.com/item/91713125-grace-g-860-long-tonearm" ] } }, { "id": "tonearm:410:ortofon-smg-212", "display_name": "Ortofon SMG-212", "manufacturer": "Ortofon", "model": "SMG-212", "effective_mass_g": 25, "effective_length_mm": 225, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 15, "max": 30 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SMG-212 is in Ortofon vintage/professional/SPU family; no direct explicit effective-mass basis found for this record in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Ortofon SPU/SME headshell family not verified for this record", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://ortofon.com/pages/smg_skg-212" ] } }, { "id": "tonearm:411:linn-ekos-2", "display_name": "Linn Ekos 2", "manufacturer": "Linn", "model": "Ekos 2", "effective_mass_g": 11.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:412:roksan-artemiz", "display_name": "Roksan Artemiz", "manufacturer": "Roksan", "model": "Artemiz", "effective_mass_g": 11, "effective_length_mm": 240, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true }, { "id": "tonearm:413:michell-focus-arm", "display_name": "Michell Focus Arm", "manufacturer": "Michell", "model": "Focus Arm", "effective_mass_g": 12, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true }, { "id": "tonearm:414:grace-g-727", "display_name": "Grace G-727", "manufacturer": "Grace", "model": "G-727", "effective_mass_g": 6.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": true }, { "id": "tonearm:415:sme-m2-10", "display_name": "SME M2-10", "manufacturer": "SME", "model": "M2-10", "effective_mass_g": 9.5, "effective_length_mm": 239.3, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME M2 source confirms detachable headshell design; published 9.5 g effective-mass basis is not explicit in the retrieved source.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable magnesium/S2-R headshell family", "source_urls": [ "https://sme.co.uk/product/m2-9-tonearm/", "https://www.smetonearms.com/index.php?cPath=15&main_page=product_info&products_id=81" ] } }, { "id": "tonearm:416:rega-rb101", "display_name": "Rega RB101", "manufacturer": "Rega", "model": "RB101", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": true }, { "id": "tonearm:417:technics-epa-501h", "display_name": "Technics EPA-501H", "manufacturer": "Technics", "model": "EPA-501H", "effective_mass_g": 20, "effective_length_mm": 250, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 20 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:418:jelco-sa-750", "display_name": "Jelco SA-750", "manufacturer": "Jelco", "model": "SA-750", "effective_mass_g": 20, "effective_length_mm": 229, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Dealer clarification says Jelco effective-mass figures are arm + headshell; legacy SA-family source confirms removable headshell where available.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.vinylengine.com/library/jelco/sa-750d.shtml" ] } }, { "id": "tonearm:419:ortofon-rm-212", "display_name": "Ortofon RM-212", "manufacturer": "Ortofon", "model": "RM-212", "effective_mass_g": 19, "effective_length_mm": 225, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 7, "max": 19 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Vintage Ortofon professional arm context found; no direct RM-212 effective-mass/headshell-basis source found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Ortofon RM-212 headshell not verified", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://www.vinylengine.com/tonearm_database.php" ] } }, { "id": "tonearm:420:sme-3009", "display_name": "SME 3009", "manufacturer": "SME", "model": "3009", "effective_mass_g": 12.5, "effective_length_mm": 228, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 12.5 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:421:sumiko-mdc-800", "display_name": "Sumiko MDC-800", "manufacturer": "Sumiko", "model": "MDC-800", "effective_mass_g": 13.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": true }, { "id": "tonearm:422:grace-g-540", "display_name": "Grace G-540", "manufacturer": "Grace", "model": "G-540", "effective_mass_g": 8, "effective_length_mm": 237, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Sparse evidence found. Listings show original-headshell examples and family parts with G-545/G-560/G-565, but no source found states effective-mass basis or shell mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Grace G-540 original headshell", "source_urls": [ "https://www.vinylengine.com/turntable_forum/viewtopic.php?t=73767", "https://www.worthpoint.com/worthopedia/grace-540-tonearm-original-headshell-119726633" ] } }, { "id": "tonearm:423:helius-scorpio", "display_name": "Helius Scorpio", "manufacturer": "Helius", "model": "Scorpio", "effective_mass_g": 9, "effective_length_mm": 228, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true }, { "id": "tonearm:424:pioneer-pa-1000", "display_name": "Pioneer PA-1000", "manufacturer": "Pioneer", "model": "PA-1000", "effective_mass_g": 15, "effective_length_mm": 237, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "Pioneer PA-1000 sources verify universal headshell joint/removable headshell, but do not explicitly state whether effective mass includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Pioneer magnesium/SME-type headshell not verified", "source_urls": [ "https://www.vinylengine.com/library/pioneer/pa-1000.shtml", "https://audio-database.com/PIONEER-EXCLUSIVE/etc/pa-1000-e.html" ] } }, { "id": "tonearm:425:thorens-tp-16", "display_name": "Thorens TP 16", "manufacturer": "Thorens", "model": "TP 16", "effective_mass_g": 16.5, "effective_length_mm": 230, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TP 16.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:426:rega-rb1000", "display_name": "Rega RB1000", "manufacturer": "Rega", "model": "RB1000", "effective_mass_g": 10, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:427:adc-lmf-1", "display_name": "ADC LMF-1", "manufacturer": "ADC", "model": "LMF-1", "effective_mass_g": 6.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:428:fidelity-research-fr-66", "display_name": "Fidelity Research FR-66", "manufacturer": "Fidelity Research", "model": "FR-66", "effective_mass_g": 38, "effective_length_mm": 307, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 10, "max": 38 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Audio Database confirms FR-66/FR-66S compatible cartridge weight including shell and attached shell options FR-S/3 19.8 g or FR-S/5 18 g; no explicit basis found for the 38 g effective mass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 19.8, "standard_headshell_model": "Fidelity Research FR-S/3 or FR-S/5", "source_urls": [ "https://audio-database.com/FIDELITYRESEARCH/etc/fr-66s.html", "https://www.vinylengine.com/library/fidelity-research/fr-66.shtml" ] } }, { "id": "tonearm:429:saec-we-407-23", "display_name": "SAEC WE-407/23", "manufacturer": "SAEC", "model": "WE-407/23", "effective_mass_g": 6, "effective_length_mm": 233, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SAEC WE-407/23 sources/manual listings verify model family and headshell handling, but no explicit effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SAEC WE-407/23 headshell not fully verified", "source_urls": [ "https://www.vinylengine.com/library/saec/we-407.shtml", "https://e-staff-net.com/shiryou/manual/saec_we407-23_manual.pdf" ] } }, { "id": "tonearm:430:grace-g-560", "display_name": "Grace G-560", "manufacturer": "Grace", "model": "G-560", "effective_mass_g": 15, "effective_length_mm": 285, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 30 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-02", "effective_mass_headshell_note": "Only family/parts evidence found; G-540/G-545/G-560/G-565 share counterweight parts, but no primary basis source found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-02", "registry_file": "engrove_headshell_effective_mass_registry_HS-02_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Grace G-560 original headshell", "source_urls": [ "https://samuraiaudio.com/products/grace-g540-g545-g560-g565-tonearm-weight-30-4g", "https://www.vinylengine.com/tonearm_reviews.php?make=Grace" ] } }, { "id": "tonearm:431:ortofon-spu-g", "display_name": "Ortofon SPU-G", "manufacturer": "Ortofon", "model": "SPU-G", "effective_mass_g": 30, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SPU-G is in Ortofon vintage/professional/SPU family; no direct explicit effective-mass basis found for this record in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Ortofon SPU/SME headshell family not verified for this record", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://ortofon.com/pages/smg_skg-212" ] } }, { "id": "tonearm:432:jelco-sa-370", "display_name": "Jelco SA-370", "manufacturer": "Jelco", "model": "SA-370", "effective_mass_g": 18, "effective_length_mm": 228, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Only generic Jelco/removable-headshell evidence found; effective-mass basis remains unknown.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://www.lpgear.com/product/JELCOSA250.html" ] } }, { "id": "tonearm:433:audioquest-pt-5", "display_name": "AudioQuest PT-5", "manufacturer": "AudioQuest", "model": "PT-5", "effective_mass_g": 10.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:434:pro-ject-10cc", "display_name": "Pro-Ject 10cc", "manufacturer": "Pro-Ject", "model": "10cc", "effective_mass_g": 9.5, "effective_length_mm": 254, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 14 }, "match_ready": true }, { "id": "tonearm:435:vpi-jmw-12-6", "display_name": "VPI JMW-12.6", "manufacturer": "VPI", "model": "JMW-12.6", "effective_mass_g": 12.6, "effective_length_mm": 313.3, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 18 }, "match_ready": true }, { "id": "tonearm:436:jelco-tk-950l", "display_name": "Jelco TK-950L", "manufacturer": "Jelco", "model": "TK-950L", "effective_mass_g": 13.8, "effective_length_mm": 305, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "includes_standard_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Jelco source evidence indicates standard headshell is part of the published arm mass convention for these later TK/TS arms.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/", "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/" ] } }, { "id": "tonearm:437:technics-epa-102l", "display_name": "Technics EPA-102L", "manufacturer": "Technics", "model": "EPA-102L", "effective_mass_g": 16, "effective_length_mm": 282, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-07", "effective_mass_headshell_note": "Technics EPA source confirms universal tonearm context; retrieved service/library text does not explicitly state whether 16 g includes headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-07", "registry_file": "engrove_headshell_effective_mass_registry_HS-07_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Technics universal removable headshell family", "source_urls": [ "https://www.vinylengine.com/library/technics/epa-100.shtml", "https://archive.org/download/manual_EPA100_SM_TECHNICS_EN/EPA100_SM_TECHNICS_EN_text.pdf" ] } }, { "id": "tonearm:438:sme-3012-series-ii", "display_name": "SME 3012 Series II", "manufacturer": "SME", "model": "3012 Series II", "effective_mass_g": 14.5, "effective_length_mm": 305.8, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 14.5 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:439:linn-lvx-plus", "display_name": "Linn LVX Plus", "manufacturer": "Linn", "model": "LVX Plus", "effective_mass_g": 10.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": true }, { "id": "tonearm:440:helius-standard", "display_name": "Helius Standard", "manufacturer": "Helius", "model": "Standard", "effective_mass_g": 11, "effective_length_mm": 228, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Official Helius history identifies the Standard/Aurum lineage; a secondary sale listing reports effective arm mass 13 g, conflicting with the 11 g seed. No headshell inclusion basis found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "change_effective_mass_g", "data_patch_needed": true, "source_urls": [ "https://www.heliusdesigns.co.uk/std.html", "https://phonobar.se/en/hifis/p/helius-aurum-standard-with-sme-base" ] } }, { "id": "tonearm:441:ortofon-spu-a", "display_name": "Ortofon SPU-A", "manufacturer": "Ortofon", "model": "SPU-A", "effective_mass_g": 30, "headshell_connector": "proprietary", "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-05", "effective_mass_headshell_note": "SPU-A is in Ortofon vintage/professional/SPU family; no direct explicit effective-mass basis found for this record in this pass.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-05", "registry_file": "engrove_headshell_effective_mass_registry_HS-05_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Ortofon SPU/SME headshell family not verified for this record", "source_urls": [ "https://ortofon.com/pages/rmg-309-vintage", "https://ortofon.com/pages/smg_skg-212" ] } }, { "id": "tonearm:442:linn-ekos-1", "display_name": "Linn Ekos 1", "manufacturer": "Linn", "model": "Ekos 1", "effective_mass_g": 11.5, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 9 }, "match_ready": true }, { "id": "tonearm:443:sme-m2-9r", "display_name": "SME M2-9R", "manufacturer": "SME", "model": "M2-9R", "effective_mass_g": 9.6, "effective_length_mm": 233.2, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "SME M2 source confirms detachable headshell design; published 9.6 g effective-mass basis is not explicit in the retrieved source.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable magnesium/S2-R headshell family", "source_urls": [ "https://sme.co.uk/product/m2-9-tonearm/", "https://www.smetonearms.com/index.php?cPath=15&main_page=product_info&products_id=81" ] } }, { "id": "tonearm:444:goldmund-t3", "display_name": "Goldmund T3", "manufacturer": "Goldmund", "model": "T3", "match_ready": false }, { "id": "tonearm:445:goldmund-t4", "display_name": "Goldmund T4", "manufacturer": "Goldmund", "model": "T4", "match_ready": false }, { "id": "tonearm:446:goldmund-t5", "display_name": "Goldmund T5", "manufacturer": "Goldmund", "model": "T5", "effective_length_mm": 200, "match_ready": false }, { "id": "tonearm:447:esl-310", "display_name": "ESL 310", "manufacturer": "ESL", "model": "310", "match_ready": false }, { "id": "tonearm:448:esl-s-1000", "display_name": "ESL S-1000", "manufacturer": "ESL", "model": "S-1000", "match_ready": false }, { "id": "tonearm:449:esl-s-2000", "display_name": "ESL S-2000", "manufacturer": "ESL", "model": "S-2000", "match_ready": false }, { "id": "tonearm:450:astatic-d9", "display_name": "Astatic D9", "manufacturer": "Astatic", "model": "D9", "match_ready": false }, { "id": "tonearm:451:da-vinci-audio-labs-grandezza-10", "display_name": "Da Vinci Audio Labs Grandezza 10\"", "manufacturer": "Da Vinci Audio Labs", "model": "Grandezza 10\"", "effective_length_mm": 254, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:452:da-vinci-audio-labs-grandezza-12", "display_name": "Da Vinci Audio Labs Grandezza 12\"", "manufacturer": "Da Vinci Audio Labs", "model": "Grandezza 12\"", "effective_length_mm": 308.8, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:453:da-vinci-audio-labs-grandezza-9", "display_name": "Da Vinci Audio Labs Grandezza 9\"", "manufacturer": "Da Vinci Audio Labs", "model": "Grandezza 9\"", "effective_length_mm": 233.2, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:454:da-vinci-audio-labs-virtu-tone-arm", "display_name": "Da Vinci Audio Labs Virtu Tone Arm", "manufacturer": "Da Vinci Audio Labs", "model": "Virtu Tone Arm", "match_ready": false }, { "id": "tonearm:455:awa-sp-03", "display_name": "AWA SP-03", "manufacturer": "AWA", "model": "SP-03", "effective_length_mm": 215, "match_ready": false }, { "id": "tonearm:456:durand-kairos", "display_name": "Durand Kairos", "manufacturer": "Durand", "model": "Kairos", "match_ready": false }, { "id": "tonearm:457:durand-talea", "display_name": "Durand Talea", "manufacturer": "Durand", "model": "Talea", "match_ready": false }, { "id": "tonearm:458:durand-telos", "display_name": "Durand Telos", "manufacturer": "Durand", "model": "Telos", "match_ready": false }, { "id": "tonearm:459:hadcock-gh-228-export", "display_name": "Hadcock GH 228 export", "manufacturer": "Hadcock", "model": "GH 228 export", "effective_length_mm": 228.6, "match_ready": false }, { "id": "tonearm:460:hadcock-gh-242-se", "display_name": "Hadcock GH 242 SE", "manufacturer": "Hadcock", "model": "GH 242 SE", "effective_mass_g": 6.5, "effective_length_mm": 243.8, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Hadcock GH-242 is a unipivot arm with integrated headshell/arm structure; no SME headshell mass should be added unless user has a modified arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Hadcock arm/headshell", "source_urls": [ "https://www.vinylengine.com/library/hadcock/gh-242.shtml" ] } }, { "id": "tonearm:461:hadcock-super-unilift-mkiii", "display_name": "Hadcock Super Unilift mkIII", "manufacturer": "Hadcock", "model": "Super Unilift mkIII", "effective_length_mm": 228.9, "match_ready": false }, { "id": "tonearm:462:hadcock-unipoise", "display_name": "Hadcock Unipoise", "manufacturer": "Hadcock", "model": "Unipoise", "effective_length_mm": 228.6, "match_ready": false }, { "id": "tonearm:463:hadcock-unipoise-super", "display_name": "Hadcock Unipoise Super", "manufacturer": "Hadcock", "model": "Unipoise Super", "match_ready": false }, { "id": "tonearm:464:saec-we-308-l", "display_name": "SAEC WE-308 L", "manufacturer": "SAEC", "model": "WE-308 L", "effective_length_mm": 270, "match_ready": false }, { "id": "tonearm:465:saec-we-308-n", "display_name": "SAEC WE-308 N", "manufacturer": "SAEC", "model": "WE-308 N", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:466:saec-we-308-sx", "display_name": "SAEC WE-308 SX", "manufacturer": "SAEC", "model": "WE-308 SX", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:467:saec-we-317s", "display_name": "SAEC WE-317S", "manufacturer": "SAEC", "model": "WE-317S", "match_ready": false }, { "id": "tonearm:468:saec-we-506", "display_name": "SAEC WE-506", "manufacturer": "SAEC", "model": "WE-506", "effective_length_mm": 295, "match_ready": false }, { "id": "tonearm:469:saec-we-8000", "display_name": "SAEC WE-8000", "manufacturer": "SAEC", "model": "WE-8000", "effective_length_mm": 306, "match_ready": false }, { "id": "tonearm:470:gemini-pdt-6000", "display_name": "Gemini PDT 6000", 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"manufacturer": "Glanz", "model": "MH-124S", "match_ready": false }, { "id": "tonearm:519:glanz-mh-9b", "display_name": "Glanz MH-9B", "manufacturer": "Glanz", "model": "MH-9B", "match_ready": false }, { "id": "tonearm:520:horstmann-petter-iason", "display_name": "Horstmann Petter Iason", "manufacturer": "Horstmann Petter", "model": "Iason", "match_ready": false }, { "id": "tonearm:521:ferguson-392g", "display_name": "Ferguson 392G", "manufacturer": "Ferguson", "model": "392G", "match_ready": false }, { "id": "tonearm:522:infinity-black-widow-mkii", "display_name": "Infinity Black widow mkII", "manufacturer": "Infinity", "model": "Black widow mkII", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:523:musicmaster-sd-12", "display_name": "MusicMaster SD-12", "manufacturer": "MusicMaster", "model": "SD-12", "match_ready": false }, { "id": "tonearm:524:sharp-rp-1000", "display_name": "Sharp RP-1000", "manufacturer": "Sharp", "model": "RP-1000", "effective_length_mm": 215, "match_ready": false }, { "id": "tonearm:525:sharp-rp-105", "display_name": "Sharp RP-105", "manufacturer": "Sharp", "model": "RP-105", "effective_length_mm": 215, "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": false }, { "id": "tonearm:526:sharp-rp-107", "display_name": "Sharp RP-107", "manufacturer": "Sharp", "model": "RP-107", "effective_length_mm": 70, "match_ready": false }, { "id": "tonearm:527:sharp-rp-11", "display_name": "Sharp RP-11", "manufacturer": "Sharp", "model": "RP-11", "effective_length_mm": 215, "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": false }, { "id": "tonearm:528:sharp-rp-116", "display_name": "Sharp RP-116", "manufacturer": "Sharp", "model": "RP-116", "effective_length_mm": 70, "match_ready": false }, { "id": "tonearm:529:sharp-rp-155", "display_name": "Sharp RP-155", "manufacturer": "Sharp", "model": "RP-155", "effective_length_mm": 215, "match_ready": false }, { "id": "tonearm:530:sharp-rp-200", "display_name": "Sharp RP-200", "manufacturer": "Sharp", "model": "RP-200", "effective_length_mm": 215, "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": false }, { "id": "tonearm:531:sharp-rp-304", "display_name": "Sharp RP-304", "manufacturer": "Sharp", "model": "RP-304", "match_ready": false }, { "id": "tonearm:532:sharp-rp-3500", "display_name": "Sharp RP-3500", "manufacturer": "Sharp", "model": "RP-3500", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 4, "max": 18 }, "match_ready": false }, { "id": "tonearm:533:sharp-rp-7100", "display_name": "Sharp RP-7100", "manufacturer": "Sharp", "model": "RP-7100", "effective_mass_g": 16, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Sharp RP-7100 source check did not verify headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/sharp.shtml" ] } }, { "id": "tonearm:534:toho-t-2401", "display_name": "Toho T-2401", "manufacturer": "Toho", "model": "T-2401", "effective_length_mm": 240, "cartridge_weight_range_g": { "min": 3, "max": 30 }, "match_ready": false }, { "id": "tonearm:535:yamaha-p-07", "display_name": "Yamaha P-07", "manufacturer": "Yamaha", "model": "P-07", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 2.5, "max": 9 }, "match_ready": false }, { "id": "tonearm:536:yamaha-p-350", "display_name": "Yamaha P-350", "manufacturer": "Yamaha", "model": "P-350", "effective_mass_g": 11, "effective_length_mm": 222, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2.5, "max": 10 }, "match_ready": true }, { "id": "tonearm:537:yamaha-p-450", "display_name": "Yamaha P-450", "manufacturer": "Yamaha", "model": "P-450", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 2.5, "max": 10 }, "match_ready": false }, { "id": "tonearm:538:yamaha-p-520", "display_name": "Yamaha P-520", "manufacturer": "Yamaha", "model": "P-520", "effective_mass_g": 11, "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 2.5, "max": 9 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Yamaha source check did not verify headshell/effective-mass basis for this stock arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/yamaha.shtml" ] } }, { "id": "tonearm:539:yamaha-p-850", "display_name": "Yamaha P-850", "manufacturer": "Yamaha", "model": "P-850", "effective_mass_g": 11, "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 2.5, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Yamaha source check did not verify headshell/effective-mass basis for this stock arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/yamaha.shtml" ] } }, { "id": "tonearm:540:yamaha-pf-1000", "display_name": "Yamaha PF-1000", "manufacturer": "Yamaha", "model": "PF-1000", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 2, "max": 11 }, "match_ready": false }, { "id": "tonearm:541:yamaha-pf-800", "display_name": "Yamaha PF-800", "manufacturer": "Yamaha", "model": "PF-800", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 2, "max": 11 }, "match_ready": false }, { "id": "tonearm:542:yamaha-px-2", "display_name": "Yamaha PX-2", "manufacturer": "Yamaha", "model": "PX-2", "effective_mass_g": 17, "effective_length_mm": 190, "cartridge_weight_range_g": { "min": 5, "max": 16 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Yamaha PX source says the arm adopts a pure aluminum forged headshell and variable effective mass; the fixed numeric basis remains ambiguous.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Yamaha forged headshell / linear tracking arm assembly", "source_urls": [ "https://audio-database.com/YAMAHA/player/px-3.html", "https://www.vinylengine.com/library/yamaha/px-2.shtml" ] } }, { "id": "tonearm:543:yamaha-px-3", "display_name": "Yamaha PX-3", "manufacturer": "Yamaha", "model": "PX-3", "effective_mass_g": 17, "effective_length_mm": 190, "cartridge_weight_range_g": { "min": 5, "max": 16 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Yamaha PX source says the arm adopts a pure aluminum forged headshell and variable effective mass; the fixed numeric basis remains ambiguous.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Yamaha forged headshell / linear tracking arm assembly", "source_urls": [ "https://audio-database.com/YAMAHA/player/px-3.html", "https://www.vinylengine.com/library/yamaha/px-2.shtml" ] } }, { "id": "tonearm:544:yamaha-straight-tonearm", "display_name": "Yamaha Straight Tonearm", "manufacturer": "Yamaha", "model": "Straight Tonearm", "match_ready": false }, { "id": "tonearm:545:yamaha-tt-400", "display_name": "Yamaha TT-400", "manufacturer": "Yamaha", "model": "TT-400", "effective_mass_g": 9.5, "effective_length_mm": 230, "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Yamaha source check did not verify headshell/effective-mass basis for this stock arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/yamaha.shtml" ] } }, { "id": "tonearm:546:yamaha-yp-211", "display_name": "Yamaha YP-211", "manufacturer": "Yamaha", "model": "YP-211", "effective_length_mm": 215, "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": false }, { "id": "tonearm:547:yamaha-yp-400", "display_name": "Yamaha YP-400", "manufacturer": "Yamaha", "model": "YP-400", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:548:yamaha-yp-700", "display_name": "Yamaha YP-700", "manufacturer": "Yamaha", "model": "YP-700", "match_ready": false }, { "id": "tonearm:549:yamaha-yp-800", "display_name": "Yamaha YP-800", "manufacturer": "Yamaha", "model": "YP-800", "effective_length_mm": 242, "cartridge_weight_range_g": { "min": 3, "max": 24 }, "match_ready": false }, { "id": "tonearm:550:yamaha-yp-b2", "display_name": "Yamaha YP-B2", "manufacturer": "Yamaha", "model": "YP-B2", "effective_length_mm": 215, "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:551:yamaha-yp-b4", "display_name": "Yamaha YP-B4", "manufacturer": "Yamaha", "model": "YP-B4", "effective_length_mm": 210, "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": false }, { "id": "tonearm:552:yamaha-yp-d71", "display_name": "Yamaha YP-D71", "manufacturer": "Yamaha", "model": "YP-D71", "effective_mass_g": 15, "effective_length_mm": 242, "cartridge_weight_range_g": { "min": 3, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Yamaha source check did not verify headshell/effective-mass basis for this stock arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/yamaha.shtml" ] } }, { "id": "tonearm:553:yamaha-yp-d8", "display_name": "Yamaha YP-D8", "manufacturer": "Yamaha", "model": "YP-D8", "effective_mass_g": 18, "effective_length_mm": 232, "cartridge_weight_range_g": { "min": 2, "max": 23 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Yamaha source check did not verify headshell/effective-mass basis for this stock arm.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/yamaha.shtml" ] } }, { "id": "tonearm:554:yamaha-ysa-1", "display_name": "Yamaha YSA 1", "manufacturer": "Yamaha", "model": "YSA 1", "effective_length_mm": 262, "match_ready": false }, { "id": "tonearm:555:audio-innovations-delta-inertia", "display_name": "Audio Innovations Delta Inertia", "manufacturer": "Audio Innovations", "model": "Delta Inertia", "match_ready": false }, { "id": "tonearm:556:consonance-st100", "display_name": "Consonance ST100", "manufacturer": "Consonance", "model": "ST100", "effective_length_mm": 230, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 16 }, "match_ready": false }, { "id": "tonearm:557:consonance-st600-10-5", "display_name": "Consonance ST600 10.5\"", "manufacturer": "Consonance", "model": "ST600 10.5\"", "effective_length_mm": 266, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 16 }, "match_ready": false }, { "id": "tonearm:558:consonance-st600-12", "display_name": "Consonance ST600 12\"", "manufacturer": "Consonance", "model": "ST600 12\"", "effective_length_mm": 300, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 16 }, "match_ready": false }, { "id": "tonearm:559:audiomods-series-six", "display_name": "Audiomods Series Six", "manufacturer": "Audiomods", "model": "Series Six", "match_ready": false }, { "id": "tonearm:560:era-virtual-pivot", "display_name": "ERA Virtual Pivot", "manufacturer": "ERA", "model": "Virtual Pivot", "match_ready": false }, { "id": "tonearm:561:wilson-benesch-act-one", "display_name": "Wilson Benesch ACT One", "manufacturer": "Wilson Benesch", "model": "ACT One", "match_ready": false }, { "id": "tonearm:562:wilson-benesch-act-point-five", "display_name": "Wilson Benesch Act Point Five", "manufacturer": "Wilson Benesch", "model": "Act Point Five", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:563:wilson-benesch-act-two", "display_name": "Wilson Benesch ACT Two", "manufacturer": "Wilson Benesch", "model": "ACT Two", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:564:realistic-lab-400", "display_name": "Realistic LAB-400", "manufacturer": "Realistic", "model": "LAB-400", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:565:realistic-lab-420", "display_name": "Realistic LAB-420", "manufacturer": "Realistic", "model": "LAB-420", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 3.2, "max": 8.5 }, "match_ready": false }, { "id": "tonearm:566:sanyo-plus-q50", "display_name": "Sanyo Plus Q50", "manufacturer": "Sanyo", "model": "Plus Q50", "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:567:sanyo-tp-1000", "display_name": "Sanyo TP 1000", "manufacturer": "Sanyo", "model": "TP 1000", "match_ready": false }, { "id": "tonearm:568:sanyo-tp-625", "display_name": "Sanyo TP 625", "manufacturer": "Sanyo", "model": "TP 625", "match_ready": false }, { "id": "tonearm:569:sanyo-tp-728", "display_name": "Sanyo TP 728", "manufacturer": "Sanyo", "model": "TP 728", "match_ready": false }, { "id": "tonearm:570:gray-research-103-lp", "display_name": "Gray Research 103-LP", "manufacturer": "Gray Research", "model": "103-LP", "match_ready": false }, { "id": "tonearm:571:gray-research-103-s", "display_name": "Gray Research 103-S", "manufacturer": "Gray Research", "model": "103-S", "match_ready": false }, { "id": "tonearm:572:gray-research-106-sp", "display_name": "Gray Research 106-SP", "manufacturer": "Gray Research", "model": "106-SP", "match_ready": false }, { "id": "tonearm:573:gray-research-108", "display_name": "Gray Research 108", "manufacturer": "Gray Research", "model": "108", "effective_length_mm": 279.4, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:574:gray-research-108-b", "display_name": "Gray Research 108-B", "manufacturer": "Gray Research", "model": "108-B", "match_ready": false }, { "id": "tonearm:575:gray-research-108-c", "display_name": "Gray Research 108-C", "manufacturer": "Gray Research", "model": "108-C", "match_ready": false }, { "id": "tonearm:576:kenwood-kd-2077", "display_name": "Kenwood KD-2077", "manufacturer": "Kenwood", "model": "KD-2077", "effective_length_mm": 225, "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:577:kenwood-kd-5100", "display_name": "Kenwood KD-5100", "manufacturer": "Kenwood", "model": "KD-5100", "effective_length_mm": 225, "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": false }, { "id": "tonearm:578:kenwood-kd-55", "display_name": "Kenwood KD-55", "manufacturer": "Kenwood", "model": "KD-55", "effective_length_mm": 225, "match_ready": false }, { "id": "tonearm:579:kenwood-kd-550", "display_name": "Kenwood KD-550", "manufacturer": "Kenwood", "model": "KD-550", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": false }, { "id": "tonearm:580:kenwood-kd-650", "display_name": "Kenwood KD-650", "manufacturer": "Kenwood", "model": "KD-650", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 2, "max": 12 }, "match_ready": false }, { "id": "tonearm:581:kenwood-kd-700", "display_name": "Kenwood KD-700", "manufacturer": "Kenwood", "model": "KD-700", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 4.5, "max": 12 }, "match_ready": false }, { "id": "tonearm:582:kenwood-kd-750", "display_name": "Kenwood KD-750", "manufacturer": "Kenwood", "model": "KD-750", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": false }, { "id": "tonearm:583:kenwood-kd-770", "display_name": "Kenwood KD-770", "manufacturer": "Kenwood", "model": "KD-770", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 2, "max": 12 }, "match_ready": false }, { "id": "tonearm:584:kenwood-kd-850", "display_name": "Kenwood KD-850", "manufacturer": "Kenwood", "model": "KD-850", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 2, "max": 12 }, "match_ready": false }, { "id": "tonearm:585:kenwood-l-07d", "display_name": "Kenwood L-07D", "manufacturer": "Kenwood", "model": "L-07D", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 1, "max": 22 }, "match_ready": false }, { "id": "tonearm:586:kenwood-l-07d-ii", "display_name": "Kenwood L-07D II", "manufacturer": "Kenwood", "model": "L-07D II", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 1, "max": 22 }, "match_ready": false }, { "id": "tonearm:587:kenwood-p-110", "display_name": "Kenwood P-110", "manufacturer": "Kenwood", "model": "P-110", "effective_length_mm": 203, "match_ready": false }, { "id": "tonearm:588:thorens-ambiance", "display_name": "Thorens Ambiance", "manufacturer": "Thorens", "model": "Ambiance", "effective_mass_g": 12.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens source context found, but Thorens Ambiance's effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:589:thorens-btd-12s", "display_name": "Thorens BTD-12S", "manufacturer": "Thorens", "model": "BTD-12S", "match_ready": false }, { "id": "tonearm:590:thorens-rb250", "display_name": "Thorens RB250", "manufacturer": "Thorens", "model": "RB250", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:591:thorens-td104-tp22", "display_name": "Thorens TD104 (TP22)", "manufacturer": "Thorens", "model": "TD104 (TP22)", "effective_mass_g": 7.5, "effective_length_mm": 222, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens source context found, but Thorens TD104 (TP22)'s effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:592:thorens-td105-tp22", "display_name": "Thorens TD105 (TP22)", "manufacturer": "Thorens", "model": "TD105 (TP22)", "effective_mass_g": 7.5, "effective_length_mm": 222, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 3, "max": 7 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Thorens source context found, but Thorens TD105 (TP22)'s effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:593:thorens-td110-tp30", "display_name": "Thorens TD110 (TP30)", "manufacturer": "Thorens", "model": "TD110 (TP30)", "effective_mass_g": 7.5, "effective_length_mm": 222, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens source context found, but Thorens TD110 (TP30)'s effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:594:thorens-td110-mkii", "display_name": "Thorens TD110 mkII", "manufacturer": "Thorens", "model": "TD110 mkII", "effective_mass_g": 7.5, "effective_length_mm": 222, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens source context found, but Thorens TD110 mkII's effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:595:thorens-td115-tp30", "display_name": "Thorens TD115 (TP30)", "manufacturer": "Thorens", "model": "TD115 (TP30)", "effective_mass_g": 7.5, "effective_length_mm": 222, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens source context found, but Thorens TD115 (TP30)'s effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:596:thorens-td124-mkii-tp14", "display_name": "Thorens TD124 mkII (TP14)", "manufacturer": "Thorens", "model": "TD124 mkII (TP14)", "effective_length_mm": 210, "match_ready": false }, { "id": "tonearm:597:thorens-td125-mki-tp25", "display_name": "Thorens TD125 mkI (TP25)", "manufacturer": "Thorens", "model": "TD125 mkI (TP25)", "effective_mass_g": 16, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD125 mkI (TP25).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:598:thorens-td125-mkii-tp16", "display_name": "Thorens TD125 mkII (TP16)", "manufacturer": "Thorens", "model": "TD125 mkII (TP16)", "effective_mass_g": 16.5, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD125 mkII (TP16).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:599:thorens-td126-tp16", "display_name": "Thorens TD126 (TP16)", "manufacturer": "Thorens", "model": "TD126 (TP16)", "effective_mass_g": 16.5, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD126 (TP16).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:600:thorens-td126-mkii-tp16-mkii", "display_name": "Thorens TD126 mkII (TP16 mkII)", "manufacturer": "Thorens", "model": "TD126 mkII (TP16 mkII)", "effective_mass_g": 7.5, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD126 mkII (TP16 mkII).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:601:thorens-td126-mkiii-tp16-mkiii", "display_name": "Thorens TD126 mkIII (TP16 mkIII)", "manufacturer": "Thorens", "model": "TD126 mkIII (TP16 mkIII)", "effective_mass_g": 7.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD126 mkIII (TP16 mkIII).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:602:thorens-td126-mkiii-tp29", "display_name": "Thorens TD126 mkIII (TP29)", "manufacturer": "Thorens", "model": "TD126 mkIII (TP29)", "effective_mass_g": 34, "effective_length_mm": 244, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD126 mkIII (TP29).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:603:thorens-td126-mkiv-tp16-mkiii", "display_name": "Thorens TD126 mkIV (TP16 mkIII)", "manufacturer": "Thorens", "model": "TD126 mkIV (TP16 mkIII)", "effective_mass_g": 7.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD126 mkIV (TP16 mkIII).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:604:thorens-td126-mkiv-tp29", "display_name": "Thorens TD126 mkIV (TP29)", "manufacturer": "Thorens", "model": "TD126 mkIV (TP29)", "effective_mass_g": 34, "effective_length_mm": 244, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD126 mkIV (TP29).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:605:thorens-td127", "display_name": "Thorens TD127", "manufacturer": "Thorens", "model": "TD127", "effective_mass_g": 36.5, "effective_length_mm": 309.6, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens source context found, but Thorens TD127's effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:606:thorens-td135-mkii-tp14", "display_name": "Thorens TD135 mkII (TP14)", "manufacturer": "Thorens", "model": "TD135 mkII (TP14)", "effective_length_mm": 210, "match_ready": false }, { "id": "tonearm:607:thorens-td145-tp16", "display_name": "Thorens TD145 (TP16)", "manufacturer": "Thorens", "model": "TD145 (TP16)", "effective_mass_g": 16.5, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD145 (TP16).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:608:grado-laboratory-series", "display_name": "Grado Laboratory Series", "manufacturer": "Grado", "model": "Laboratory Series", "effective_length_mm": 227, "match_ready": false }, { "id": "tonearm:609:grado-micro-control", "display_name": "Grado Micro Control", "manufacturer": "Grado", "model": "Micro Control", "match_ready": false }, { "id": "tonearm:610:grado-signature-laboratory-standard", "display_name": "Grado Signature Laboratory Standard", "manufacturer": "Grado", "model": "Signature Laboratory Standard", "match_ready": false }, { "id": "tonearm:611:adc-1500-fg", "display_name": "ADC 1500 FG", "manufacturer": "ADC", "model": "1500 FG", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:612:adc-accutrac-3500-plus-6", "display_name": "ADC Accutrac 3500 Plus 6", "manufacturer": "ADC", "model": "Accutrac 3500 Plus 6", "effective_length_mm": 221, "match_ready": false }, { "id": "tonearm:613:adc-accutrac-4000", "display_name": "ADC Accutrac 4000", "manufacturer": "ADC", "model": "Accutrac 4000", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:614:adc-model-40", "display_name": "ADC model 40", "manufacturer": "ADC", "model": "model 40", "effective_length_mm": 228.6, "match_ready": false }, { "id": "tonearm:615:adc-model-85", "display_name": "ADC model 85", "manufacturer": "ADC", "model": "model 85", "effective_length_mm": 228.6, "match_ready": false }, { "id": "tonearm:616:pluto-2a-special", "display_name": "Pluto 2A Special", "manufacturer": "Pluto", "model": "2A Special", "match_ready": false }, { "id": "tonearm:617:pluto-5a-special", "display_name": "Pluto 5A Special", "manufacturer": "Pluto", "model": "5A Special", "match_ready": false }, { "id": "tonearm:618:pluto-9a-special", "display_name": "Pluto 9A Special", "manufacturer": "Pluto", "model": "9A Special", "match_ready": false }, { "id": "tonearm:619:pluto-type-2", "display_name": "Pluto Type 2", "manufacturer": "Pluto", "model": "Type 2", "match_ready": false }, { "id": "tonearm:620:pluto-type-3", "display_name": "Pluto Type 3", "manufacturer": "Pluto", "model": "Type 3", "match_ready": false }, { "id": "tonearm:621:pluto-type-4", "display_name": "Pluto Type 4", "manufacturer": "Pluto", "model": "Type 4", "match_ready": false }, { "id": "tonearm:622:inertia-gst-1", "display_name": "Inertia GST-1", "manufacturer": "Inertia", "model": "GST-1", "effective_length_mm": 230, "cartridge_weight_range_g": { "min": 5, "max": 30 }, "match_ready": false }, { "id": "tonearm:623:siemens-rw-666", "display_name": "Siemens RW 666", "manufacturer": "Siemens", "model": "RW 666", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": false }, { "id": "tonearm:624:bang-and-olufsen-beogram-1000", "display_name": "Bang and Olufsen Beogram 1000", "manufacturer": "Bang and Olufsen", "model": "Beogram 1000", "match_ready": false }, { "id": "tonearm:625:bang-and-olufsen-beogram-1602", "display_name": "Bang and Olufsen Beogram 1602", "manufacturer": "Bang and Olufsen", "model": "Beogram 1602", "match_ready": false }, { "id": "tonearm:626:bang-and-olufsen-beogram-1800", "display_name": "Bang and Olufsen Beogram 1800", "manufacturer": "Bang and Olufsen", "model": "Beogram 1800", "match_ready": false }, { "id": "tonearm:627:bang-and-olufsen-beogram-5500", "display_name": "Bang and Olufsen Beogram 5500", "manufacturer": "Bang and Olufsen", "model": "Beogram 5500", "match_ready": false }, { "id": "tonearm:628:bang-and-olufsen-beogram-7000", "display_name": "Bang and Olufsen Beogram 7000", "manufacturer": "Bang and Olufsen", "model": "Beogram 7000", "match_ready": false }, { "id": "tonearm:629:bang-and-olufsen-rx2", "display_name": "Bang and Olufsen RX2", "manufacturer": "Bang and Olufsen", "model": "RX2", "effective_mass_g": 6, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "B&O RX2 uses a proprietary B&O cartridge/arm system rather than SME headshell; treat as integrated/proprietary assembly for warning logic.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "B&O integrated/proprietary MMC arm carrier", "source_urls": [ "https://www.vinylengine.com/library/bang-and-olufsen/rx2.shtml" ] } }, { "id": "tonearm:630:bang-and-olufsen-st-a", "display_name": "Bang and Olufsen ST / A", "manufacturer": "Bang and Olufsen", "model": "ST / A", "effective_length_mm": 223.5, "match_ready": false }, { "id": "tonearm:631:bang-and-olufsen-st-l", "display_name": "Bang and Olufsen ST /L", "manufacturer": "Bang and Olufsen", "model": "ST /L", "effective_length_mm": 223.5, "match_ready": false }, { "id": "tonearm:632:bang-and-olufsen-st-m", "display_name": "Bang and Olufsen ST /M", "manufacturer": "Bang and Olufsen", "model": "ST /M", "effective_length_mm": 205, "match_ready": false }, { "id": "tonearm:633:bang-and-olufsen-st-p", "display_name": "Bang and Olufsen ST /P", "manufacturer": "Bang and Olufsen", "model": "ST /P", "effective_length_mm": 320, "match_ready": false }, { "id": "tonearm:634:rabco-sl-8", "display_name": "Rabco SL-8", "manufacturer": "Rabco", "model": "SL-8", "match_ready": false }, { "id": "tonearm:635:thorens-td145-mkii-tp16-mkii", "display_name": "Thorens TD145 mkII (TP16 mkII)", "manufacturer": "Thorens", "model": "TD145 mkII (TP16 mkII)", "effective_mass_g": 7.5, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD145 mkII (TP16 mkII).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:636:thorens-td146-tp11-mkii", "display_name": "Thorens TD146 (TP11 mkII)", "manufacturer": "Thorens", "model": "TD146 (TP11 mkII)", "effective_mass_g": 7.5, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD146 (TP11 mkII).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:637:thorens-td146-tp11-mkiii", "display_name": "Thorens TD146 (TP11 mkIII)", "manufacturer": "Thorens", "model": "TD146 (TP11 mkIII)", "effective_mass_g": 7.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD146 (TP11 mkIII).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:638:thorens-td146-mkii-tp21", "display_name": "Thorens TD146 mkII (TP21)", "manufacturer": "Thorens", "model": "TD146 mkII (TP21)", "effective_mass_g": 12.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD146 mkII (TP21).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:639:thorens-td146-mkvi-tp50", "display_name": "Thorens TD146 mkVI (TP50)", "manufacturer": "Thorens", "model": "TD146 mkVI (TP50)", "effective_mass_g": 14, "effective_length_mm": 228, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD146 mkVI (TP50).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:640:thorens-td150-mkii", "display_name": "Thorens TD150 mkII", "manufacturer": "Thorens", "model": "TD150 mkII", "match_ready": false }, { "id": "tonearm:641:thorens-td160-mkiv-tp16-mkiv", "display_name": "Thorens TD160 mkIV (TP16 mkIV)", "manufacturer": "Thorens", "model": "TD160 mkIV (TP16 mkIV)", "effective_mass_g": 12.5, "effective_length_mm": 232, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:642:thorens-td160-mkv-tp16-mkiii", "display_name": "Thorens TD160 mkV (TP16 mkIII)", "manufacturer": "Thorens", "model": "TD160 mkV (TP16 mkIII)", "effective_mass_g": 7.5, "effective_length_mm": 232, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:643:thorens-td165-mkii-tp11-mkii", "display_name": "Thorens TD165 mkII (TP11 mkII)", "manufacturer": "Thorens", "model": "TD165 mkII (TP11 mkII)", "effective_mass_g": 7.5, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD165 mkII (TP11 mkII).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:644:denon-da-1000", "display_name": "Denon DA-1000", "manufacturer": "Denon", "model": "DA-1000", "effective_length_mm": 282, "match_ready": false }, { "id": "tonearm:645:denon-da-304", "display_name": "Denon DA-304", "manufacturer": "Denon", "model": "DA-304", "effective_length_mm": 282, "match_ready": false }, { "id": "tonearm:646:denon-dp-1100", "display_name": "Denon DP-1100", "manufacturer": "Denon", "model": "DP-1100", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": false }, { "id": "tonearm:647:denon-dp-15f", "display_name": "Denon DP-15F", "manufacturer": "Denon", "model": "DP-15F", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4, "max": 6 }, "match_ready": false }, { "id": "tonearm:648:denon-dp-2500", "display_name": "Denon DP-2500", "manufacturer": "Denon", "model": "DP-2500", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": false }, { "id": "tonearm:649:denon-dp-29f", "display_name": "Denon DP-29F", "manufacturer": "Denon", "model": "DP-29F", "effective_length_mm": 195, "match_ready": false }, { "id": "tonearm:650:denon-dp-35f", "display_name": "Denon DP-35F", "manufacturer": "Denon", "model": "DP-35F", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:651:denon-dp-3700f", "display_name": "Denon DP-3700F", "manufacturer": "Denon", "model": "DP-3700F", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": false }, { "id": "tonearm:652:denon-dp-45f", "display_name": "Denon DP-45F", "manufacturer": "Denon", "model": "DP-45F", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:653:denon-dp-47f", "display_name": "Denon DP-47F", "manufacturer": "Denon", "model": "DP-47F", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 3, "max": 12 }, "match_ready": false }, { "id": "tonearm:654:denon-dp-500m", "display_name": "Denon DP-500M", "manufacturer": "Denon", "model": "DP-500M", "effective_length_mm": 246, "cartridge_weight_range_g": { "min": 5, "max": 11 }, "match_ready": false }, { "id": "tonearm:655:denon-dp-57l", "display_name": "Denon DP-57L", "manufacturer": "Denon", "model": "DP-57L", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 11, "max": 20 }, "match_ready": false }, { "id": "tonearm:656:denon-dp-57l-s", "display_name": "Denon DP-57L S", "manufacturer": "Denon", "model": "DP-57L S", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": false }, { "id": "tonearm:657:saba-psp-240", "display_name": "SABA PSP 240", "manufacturer": "SABA", "model": "PSP 240", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:658:klaudio-kd-arm-mp10", "display_name": "Klaudio KD-ARM-MP10", "manufacturer": "Klaudio", "model": "KD-ARM-MP10", "match_ready": false }, { "id": "tonearm:659:klaudio-kd-arm-mp12", "display_name": "Klaudio KD-ARM-MP12", "manufacturer": "Klaudio", "model": "KD-ARM-MP12", "match_ready": false }, { "id": "tonearm:660:manticore-magician", "display_name": "Manticore Magician", "manufacturer": "Manticore", "model": "Magician", "effective_length_mm": 227.48, "cartridge_weight_range_g": { "min": 1.5, "max": 10 }, "match_ready": false }, { "id": "tonearm:661:manticore-magician-12", "display_name": "Manticore Magician 12\"", "manufacturer": "Manticore", "model": "Magician 12\"", "effective_length_mm": 304.8, "cartridge_weight_range_g": { "min": 1.5, "max": 10 }, "match_ready": false }, { "id": "tonearm:662:manticore-musician", "display_name": "Manticore Musician", "manufacturer": "Manticore", "model": "Musician", "effective_length_mm": 227.48, "cartridge_weight_range_g": { "min": 1.5, "max": 10 }, "match_ready": false }, { "id": "tonearm:663:design-build-listen-the-wand", "display_name": "Design Build Listen The Wand", "manufacturer": "Design Build Listen", "model": "The Wand", "match_ready": false }, { "id": "tonearm:664:denon-dp-59l", "display_name": "Denon DP-59L", "manufacturer": "Denon", "model": "DP-59L", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 3, "max": 14 }, "match_ready": false }, { "id": "tonearm:665:denon-dp-60l", "display_name": "Denon DP-60L", "manufacturer": "Denon", "model": "DP-60L", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:666:denon-dp-61f", "display_name": "Denon DP-61F", "manufacturer": "Denon", "model": "DP-61F", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 3, "max": 12 }, "match_ready": false }, { "id": "tonearm:667:denon-dp-62l", "display_name": "Denon DP-62L", "manufacturer": "Denon", "model": "DP-62L", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 11, "max": 20 }, "match_ready": false }, { "id": "tonearm:668:denon-dp-62l-s", "display_name": "Denon DP-62L S", "manufacturer": "Denon", "model": "DP-62L S", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": false }, { "id": "tonearm:669:denon-dp-6700", "display_name": "Denon DP-6700", "manufacturer": "Denon", "model": "DP-6700", "match_ready": false }, { "id": "tonearm:670:denon-dp-67l", "display_name": "Denon DP-67L", "manufacturer": "Denon", "model": "DP-67L", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": false }, { "id": "tonearm:671:denon-dp-67l-s", "display_name": "Denon DP-67L 'S'", "manufacturer": "Denon", "model": "DP-67L 'S'", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 11, "max": 20 }, "match_ready": false }, { "id": "tonearm:672:denon-dp-72l", "display_name": "Denon DP-72L", "manufacturer": "Denon", "model": "DP-72L", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": false }, { "id": "tonearm:673:stanton-st-100", "display_name": "Stanton ST-100", "manufacturer": "Stanton", "model": "ST-100", "match_ready": false }, { "id": "tonearm:674:stanton-st-150", "display_name": "Stanton ST-150", "manufacturer": "Stanton", "model": "ST-150", "match_ready": false }, { "id": "tonearm:675:stanton-str8-100", "display_name": "Stanton STR8-100", "manufacturer": "Stanton", "model": "STR8-100", "match_ready": false }, { "id": "tonearm:676:stanton-str8-20", "display_name": "Stanton STR8-20", "manufacturer": "Stanton", "model": "STR8-20", "match_ready": false }, { "id": "tonearm:677:stanton-str8-30", "display_name": "Stanton STR8-30", "manufacturer": "Stanton", "model": "STR8-30", "match_ready": false }, { "id": "tonearm:678:stanton-str8-50", "display_name": "Stanton STR8-50", "manufacturer": "Stanton", "model": "STR8-50", "match_ready": false }, { "id": "tonearm:679:stanton-str8-80", "display_name": "Stanton STR8-80", "manufacturer": "Stanton", "model": "STR8-80", "match_ready": false }, { "id": "tonearm:680:stanton-str8-90", "display_name": "Stanton STR8-90", "manufacturer": "Stanton", "model": "STR8-90", "match_ready": false }, { "id": "tonearm:681:stanton-t120", "display_name": "Stanton T120", "manufacturer": "Stanton", "model": "T120", "match_ready": false }, { "id": "tonearm:682:stanton-t50", "display_name": "Stanton T50", "manufacturer": "Stanton", "model": "T50", "match_ready": false }, { "id": "tonearm:683:stanton-t60", "display_name": "Stanton T60", "manufacturer": "Stanton", "model": "T60", "match_ready": false }, { "id": "tonearm:684:stanton-t80", "display_name": "Stanton T80", "manufacturer": "Stanton", "model": "T80", "match_ready": false }, { "id": "tonearm:685:akai-ap-004", "display_name": "Akai AP-004", "manufacturer": "Akai", "model": "AP-004", "match_ready": false }, { "id": "tonearm:686:akai-ap-004-d", "display_name": "Akai AP-004 D", "manufacturer": "Akai", "model": "AP-004 D", "match_ready": false }, { "id": "tonearm:687:akai-ap-100", "display_name": "Akai AP-100", "manufacturer": "Akai", "model": "AP-100", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:688:akai-ap-100-c", "display_name": "Akai AP-100 C", "manufacturer": "Akai", "model": "AP-100 C", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:689:akai-ap-206", "display_name": "Akai AP-206", "manufacturer": "Akai", "model": "AP-206", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": false }, { "id": "tonearm:690:akai-ap-206-c", "display_name": "Akai AP-206 C", "manufacturer": "Akai", "model": "AP-206 C", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": false }, { "id": "tonearm:691:akai-ap-420", "display_name": "Akai AP-420", "manufacturer": "Akai", "model": "AP-420", "match_ready": false }, { "id": "tonearm:692:akai-ap-l45", "display_name": "Akai AP-L45", "manufacturer": "Akai", "model": "AP-L45", "effective_length_mm": 184, "cartridge_weight_range_g": { "min": 4, "max": 10.5 }, "match_ready": false }, { "id": "tonearm:693:akai-ap-l95", "display_name": "Akai AP-L95", "manufacturer": "Akai", "model": "AP-L95", "effective_length_mm": 184, "cartridge_weight_range_g": { "min": 4, "max": 10.5 }, "match_ready": false }, { "id": "tonearm:694:aiwa-lp-3000", "display_name": "Aiwa LP-3000", "manufacturer": "Aiwa", "model": "LP-3000", "effective_length_mm": 182, "cartridge_weight_range_g": { "min": 4, "max": 29 }, "match_ready": false }, { "id": "tonearm:695:ariston-enigma", "display_name": "Ariston Enigma", "manufacturer": "Ariston", "model": "Enigma", "match_ready": false }, { "id": "tonearm:696:ariston-icon", "display_name": "Ariston Icon", "manufacturer": "Ariston", "model": "Icon", "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 10.5 }, "match_ready": false }, { "id": "tonearm:697:ariston-magnum-opus", "display_name": "Ariston Magnum Opus", "manufacturer": "Ariston", "model": "Magnum Opus", "effective_mass_g": 11.5, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Ariston source check did not locate explicit Magnum Opus effective-mass headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/ariston.shtml" ] } }, { "id": "tonearm:698:ariston-pro", "display_name": "Ariston Pro", "manufacturer": "Ariston", "model": "Pro", "match_ready": false }, { "id": "tonearm:699:ariston-pro-1200", "display_name": "Ariston Pro 1200", "manufacturer": "Ariston", "model": "Pro 1200", "effective_length_mm": 240, "cartridge_weight_range_g": { "min": 3, "max": 8 }, "match_ready": false }, { "id": "tonearm:700:ariston-pro-maxim", "display_name": "Ariston Pro Maxim", "manufacturer": "Ariston", "model": "Pro Maxim", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:701:ariston-q-deck", "display_name": "Ariston Q-Deck", "manufacturer": "Ariston", "model": "Q-Deck", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": false }, { "id": "tonearm:702:weathers-micro-touch", "display_name": "Weathers Micro-Touch", "manufacturer": "Weathers", "model": "Micro-Touch", "match_ready": false }, { "id": "tonearm:703:weathers-ps-11", "display_name": "Weathers PS-11", "manufacturer": "Weathers", "model": "PS-11", "match_ready": false }, { "id": "tonearm:704:omnitronic-bd1350", "display_name": "Omnitronic BD1350", "manufacturer": "Omnitronic", "model": "BD1350", "effective_length_mm": 210, "match_ready": false }, { "id": "tonearm:705:omnitronic-bd1520", "display_name": "Omnitronic BD1520", "manufacturer": "Omnitronic", "model": "BD1520", "effective_length_mm": 234, "match_ready": false }, { "id": "tonearm:706:omnitronic-bd1550", "display_name": "Omnitronic BD1550", "manufacturer": "Omnitronic", "model": "BD1550", "effective_length_mm": 234, "match_ready": false }, { "id": "tonearm:707:omnitronic-dd2220", "display_name": "Omnitronic DD2220", "manufacturer": "Omnitronic", "model": "DD2220", "effective_length_mm": 234, "match_ready": false }, { "id": "tonearm:708:omnitronic-dd2250", "display_name": "Omnitronic DD2250", "manufacturer": "Omnitronic", "model": "DD2250", "effective_length_mm": 234, "match_ready": false }, { "id": "tonearm:709:omnitronic-dd2250-ltd", "display_name": "Omnitronic DD2250 Ltd", "manufacturer": "Omnitronic", "model": "DD2250 Ltd", "effective_length_mm": 234, "match_ready": false }, { "id": "tonearm:710:omnitronic-dd3220", "display_name": "Omnitronic DD3220", "manufacturer": "Omnitronic", "model": "DD3220", "match_ready": false }, { "id": "tonearm:711:omnitronic-dd3250", "display_name": "Omnitronic DD3250", "manufacturer": "Omnitronic", "model": "DD3250", "match_ready": false }, { "id": "tonearm:712:omnitronic-dd5250", "display_name": "Omnitronic DD5250", "manufacturer": "Omnitronic", "model": "DD5250", "effective_length_mm": 230, "match_ready": false }, { "id": "tonearm:713:cec-8003", "display_name": "CEC 8003", "manufacturer": "CEC", "model": "8003", "match_ready": false }, { "id": "tonearm:714:cec-ba-300", "display_name": "CEC BA-300", "manufacturer": "CEC", "model": "BA-300", "effective_length_mm": 215, "match_ready": false }, { "id": "tonearm:715:cec-ba-600", "display_name": "CEC BA-600", "manufacturer": "CEC", "model": "BA-600", "effective_length_mm": 215, "match_ready": false }, { "id": "tonearm:716:cec-bd-1000", "display_name": "CEC BD-1000", "manufacturer": "CEC", "model": "BD-1000", "effective_length_mm": 215, "match_ready": false }, { "id": "tonearm:717:cec-bd-2000", "display_name": "CEC BD-2000", "manufacturer": "CEC", "model": "BD-2000", "effective_length_mm": 215, "match_ready": false }, { "id": "tonearm:718:cec-bd-6000", "display_name": "CEC BD-6000", "manufacturer": "CEC", "model": "BD-6000", "effective_length_mm": 231, "match_ready": false }, { "id": "tonearm:719:cec-bd-7000", "display_name": "CEC BD-7000", "manufacturer": "CEC", "model": "BD-7000", "effective_length_mm": 230, "match_ready": false }, { "id": "tonearm:720:cec-dd-8200", "display_name": "CEC DD-8200", "manufacturer": "CEC", "model": "DD-8200", "effective_length_mm": 215, "match_ready": false }, { "id": "tonearm:721:cec-disco-4000-mk1", "display_name": "CEC Disco 4000 mk1", "manufacturer": "CEC", "model": "Disco 4000 mk1", "match_ready": false }, { "id": "tonearm:722:cec-disco-4000-mk2", "display_name": "CEC Disco 4000 mk2", "manufacturer": "CEC", "model": "Disco 4000 mk2", "match_ready": false }, { "id": "tonearm:723:thorens-td320-tp16-mkiii", "display_name": "Thorens TD320 (TP16 mkIII)", "manufacturer": "Thorens", "model": "TD320 (TP16 mkIII)", "effective_mass_g": 7.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD320 (TP16 mkIII).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:724:thorens-td320-tp16-mkiv", "display_name": "Thorens TD320 (TP16 mkIV)", "manufacturer": "Thorens", "model": "TD320 (TP16 mkIV)", "effective_mass_g": 12.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD320 (TP16 mkIV).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:725:thorens-td524-tp16-mkiiil", "display_name": "Thorens TD524 (TP16 mkIIIL)", "manufacturer": "Thorens", "model": "TD524 (TP16 mkIIIL)", "effective_mass_g": 10, "effective_length_mm": 247.7, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD524 (TP16 mkIIIL).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:726:thorens-tp16-mkii", "display_name": "Thorens TP16 mkII", "manufacturer": "Thorens", "model": "TP16 mkII", "effective_mass_g": 7.5, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens source context found, but Thorens TP16 mkII's effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:727:thorens-tp16-mkiii", "display_name": "Thorens TP16 mkIII", "manufacturer": "Thorens", "model": "TP16 mkIII", "effective_mass_g": 7.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens source context found, but Thorens TP16 mkIII's effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:728:thorens-tp16-mkiii-l", "display_name": "Thorens TP16 mkIII L", "manufacturer": "Thorens", "model": "TP16 mkIII L", "effective_mass_g": 10, "effective_length_mm": 247.7, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens source context found, but Thorens TP16 mkIII L's effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:729:thorens-tp16-mkiv", "display_name": "Thorens TP16 mkIV", "manufacturer": "Thorens", "model": "TP16 mkIV", "effective_mass_g": 12.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens source context found, but Thorens TP16 mkIV's effective-mass basis is not explicit.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:730:musica-nova-pi", "display_name": "Musica Nova Pi", "manufacturer": "Musica Nova", "model": "Pi", "match_ready": false }, { "id": "tonearm:731:oracle-prelude", "display_name": "Oracle Prelude", "manufacturer": "Oracle", "model": "Prelude", "match_ready": false }, { "id": "tonearm:732:thorens-td146-mkv-tp28", "display_name": "Thorens TD146 mkV (TP28)", "manufacturer": "Thorens", "model": "TD146 mkV (TP28)", "effective_mass_g": 12.5, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "Thorens-Info provides original-publication effective-mass data and Thorens headshell context, but the source does not consistently prove inclusion/exclusion for Thorens TD146 mkV (TP28).", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "add_reference_headshell_mass", "data_patch_needed": true, "reference_headshell_mass_g": 10, "standard_headshell_model": "Thorens TP60/TP6x proprietary headshell family when applicable", "source_urls": [ "https://www.thorens-info.de/html/tonarme.html", "https://www.audiosilente.com/spare-parts-for-turntables-thorens-td-160-td-166-td-145-td-165-td-125-headshell-for-thorens-tp-16-tonearm.html" ] } }, { "id": "tonearm:733:lad-el80", "display_name": "LAD EL80", "manufacturer": "LAD", "model": "EL80", "match_ready": false }, { "id": "tonearm:734:lad-sa-370d", "display_name": "LAD SA-370D", "manufacturer": "LAD", "model": "SA-370D", "match_ready": false }, { "id": "tonearm:735:hitachi-ht-350", "display_name": "Hitachi HT-350", "manufacturer": "Hitachi", "model": "HT-350", "match_ready": false }, { "id": "tonearm:736:hitachi-ht-354", "display_name": "Hitachi HT-354", "manufacturer": "Hitachi", "model": "HT-354", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:737:hitachi-ht-356", "display_name": "Hitachi HT-356", "manufacturer": "Hitachi", "model": "HT-356", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:738:hitachi-ht-50s", "display_name": "Hitachi HT-50S", "manufacturer": "Hitachi", "model": "HT-50S", "match_ready": false }, { "id": "tonearm:739:hitachi-ht-550", "display_name": "Hitachi HT-550", "manufacturer": "Hitachi", "model": "HT-550", "match_ready": false }, { "id": "tonearm:740:hitachi-ps-38", "display_name": "Hitachi PS-38", "manufacturer": "Hitachi", "model": "PS-38", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:741:hitachi-ps-48", "display_name": "Hitachi PS-48", "manufacturer": "Hitachi", "model": "PS-48", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:742:guya-sto-140", "display_name": "Guya STO 140", "manufacturer": "Guya", "model": "STO 140", "effective_length_mm": 251, "match_ready": false }, { "id": "tonearm:743:lustre-st-455", "display_name": "Lustre ST-455", "manufacturer": "Lustre", "model": "ST-455", "match_ready": false }, { "id": "tonearm:744:lustre-st-510", "display_name": "Lustre ST-510", "manufacturer": "Lustre", "model": "ST-510", "match_ready": false }, { "id": "tonearm:745:lustre-st-510d", "display_name": "Lustre ST-510D", "manufacturer": "Lustre", "model": "ST-510D", "match_ready": false }, { "id": "tonearm:746:lustre-st-610", "display_name": "Lustre ST-610", "manufacturer": "Lustre", "model": "ST-610", "match_ready": false }, { "id": "tonearm:747:denon-dp-72l-s", "display_name": "Denon DP-72L S", "manufacturer": "Denon", "model": "DP-72L S", "effective_length_mm": 244, "cartridge_weight_range_g": { "min": 11, "max": 20 }, "match_ready": false }, { "id": "tonearm:748:mel-audio-zehora-ii", "display_name": "Mel Audio Zehora II", "manufacturer": "Mel Audio", "model": "Zehora II", "match_ready": false }, { "id": "tonearm:749:sme-3009-series-i", "display_name": "SME 3009 series I", "manufacturer": "SME", "model": "3009 series I", "effective_length_mm": 228.6, "match_ready": false }, { "id": "tonearm:750:sme-3009-series-ii-improved-439606", "display_name": "SME 3009 series II improved (<439606)", "manufacturer": "SME", "model": "3009 series II improved (<439606)", "effective_mass_g": 6.5, "effective_length_mm": 231.2, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 24 }, "match_ready": true }, { "id": "tonearm:751:sme-3009-series-ii-improved-439606", "display_name": "SME 3009 series II improved (>439606)", "manufacturer": "SME", "model": "3009 series II improved (>439606)", "effective_mass_g": 6.5, "effective_length_mm": 231.2, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 24 }, "match_ready": true }, { "id": "tonearm:752:sme-3009-series-ii-s2-improved-439606", "display_name": "SME 3009 series II S2 improved (<439606)", "manufacturer": "SME", "model": "3009 series II S2 improved (<439606)", "effective_mass_g": 9.5, "effective_length_mm": 231.2, "cartridge_weight_range_g": { "min": 3, "max": 21 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 9.5 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:753:sme-3009-series-ii-s2-improved-439606", "display_name": "SME 3009 series II S2 improved (>439606)", "manufacturer": "SME", "model": "3009 series II S2 improved (>439606)", "effective_mass_g": 9.5, "effective_length_mm": 231.2, "cartridge_weight_range_g": { "min": 3, "max": 21 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 9.5 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:754:sme-3010-r", "display_name": "SME 3010 R", "manufacturer": "SME", "model": "3010 R", "effective_mass_g": 12.8, "effective_length_mm": 239.3, "cartridge_weight_range_g": { "min": 0, "max": 25 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "SME source gives model family/effective mass context; headshell inclusion for SME 3010 R's 12.8 g value remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell family", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:755:sme-3012-r", "display_name": "SME 3012 R", "manufacturer": "SME", "model": "3012 R", "effective_mass_g": 14, "effective_length_mm": 308.8, "cartridge_weight_range_g": { "min": 0, "max": 25 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "SME reference distinguishes fixed and detachable variants and lists effective mass values; it does not explicitly say whether the published 14 g includes the detachable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "SME detachable headshell on S2/removable variants", "source_urls": [ "https://www.vinyl-lebt.de/SME/Improved/Thumbnailseng.html", "https://www.analogue-classics.com/html/sme_3009___3012.html" ] } }, { "id": "tonearm:756:sme-m2-10-10", "display_name": "SME M2-10 10\"", "manufacturer": "SME", "model": "M2-10 10\"", "effective_mass_g": 9.6, "effective_length_mm": 239.3, "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "SME M2 source confirms detachable headshell design; published 9.6 g effective-mass basis is not explicit in the retrieved source.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "SME detachable magnesium/S2-R headshell family", "source_urls": [ "https://sme.co.uk/product/m2-9-tonearm/", "https://www.smetonearms.com/index.php?cPath=15&main_page=product_info&products_id=81" ] } }, { "id": "tonearm:757:sme-m2-12-12", "display_name": "SME M2-12 12\"", "manufacturer": "SME", "model": "M2-12 12\"", "effective_mass_g": 12, "effective_length_mm": 308.8, "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "SME M2 source confirms detachable headshell design; published 12 g effective-mass basis is not explicit in the retrieved source.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "SME detachable magnesium/S2-R headshell family", "source_urls": [ "https://sme.co.uk/product/m2-9-tonearm/", "https://www.smetonearms.com/index.php?cPath=15&main_page=product_info&products_id=81" ] } }, { "id": "tonearm:758:sme-m2-9-9", "display_name": "SME M2-9 9\"", "manufacturer": "SME", "model": "M2-9 9\"", "effective_mass_g": 9.5, "effective_length_mm": 233.2, "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "SME M2 source confirms detachable headshell design; published 9.5 g effective-mass basis is not explicit in the retrieved source.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "SME detachable magnesium/S2-R headshell family", "source_urls": [ "https://sme.co.uk/product/m2-9-tonearm/", "https://www.smetonearms.com/index.php?cPath=15&main_page=product_info&products_id=81" ] } }, { "id": "tonearm:759:thorens-td150", "display_name": "Thorens TD150", "manufacturer": "Thorens", "model": "TD150", "match_ready": false }, { "id": "tonearm:760:kuzma-airline", "display_name": "Kuzma Airline", "manufacturer": "Kuzma", "model": "Airline", "effective_mass_g": 13, "effective_length_mm": 184, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:761:kuzma-safir-9", "display_name": "Kuzma Safir 9", "manufacturer": "Kuzma", "model": "Safir 9", "match_ready": false }, { "id": "tonearm:762:kuzma-stogi-reference", "display_name": "Kuzma Stogi Reference", "manufacturer": "Kuzma", "model": "Stogi Reference", "effective_mass_g": 12, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:763:kuzma-stogi-ref-313", "display_name": "Kuzma Stogi REF 313", "manufacturer": "Kuzma", "model": "Stogi REF 313", "match_ready": false }, { "id": "tonearm:764:kuzma-stogi-ref-313-vta", "display_name": "Kuzma Stogi REF 313 VTA", "manufacturer": "Kuzma", "model": "Stogi REF 313 VTA", "match_ready": false }, { "id": "tonearm:765:kuzma-stogi-s-12", "display_name": "Kuzma Stogi S 12", "manufacturer": "Kuzma", "model": "Stogi S 12", "match_ready": false }, { "id": "tonearm:766:kuzma-stogi-s-12-vta", "display_name": "Kuzma Stogi S 12 VTA", "manufacturer": "Kuzma", "model": "Stogi S 12 VTA", "match_ready": false }, { "id": "tonearm:767:mayware-formula-iv-mk-iii", "display_name": "Mayware Formula IV mk III", "manufacturer": "Mayware", "model": "Formula IV mk III", "effective_length_mm": 229, "match_ready": false }, { "id": "tonearm:768:mayware-formula-iv-mk-iv", "display_name": "Mayware Formula IV mk IV", "manufacturer": "Mayware", "model": "Formula IV mk IV", "effective_length_mm": 229, "match_ready": false }, { "id": "tonearm:769:mayware-formula-iv-pl-s4-d", "display_name": "Mayware Formula IV PL S4/D", "manufacturer": "Mayware", "model": "Formula IV PL S4/D", "effective_mass_g": 4.5, "effective_length_mm": 224, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Mayware Formula IV is a low-mass unipivot-style arm; source check did not show detachable SME headshell, so treat as integrated with medium confidence.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Mayware Formula IV arm/headshell", "source_urls": [ "https://www.vinylengine.com/library/mayware/formula-iv.shtml" ] } }, { "id": "tonearm:770:mayware-iv", "display_name": "Mayware IV", "manufacturer": "Mayware", "model": "IV", "effective_length_mm": 229, "match_ready": false }, { "id": "tonearm:771:korf-ta-sf9r", "display_name": "Korf TA-SF9R", "manufacturer": "Korf", "model": "TA-SF9R", "match_ready": false }, { "id": "tonearm:772:shure-m12", "display_name": "Shure M12", "manufacturer": "Shure", "model": "M12", "effective_length_mm": 216, "match_ready": false }, { "id": "tonearm:773:shure-m16", "display_name": "Shure M16", "manufacturer": "Shure", "model": "M16", "effective_length_mm": 279, "match_ready": false }, { "id": "tonearm:774:shure-m212", "display_name": "Shure M212", "manufacturer": "Shure", "model": "M212", "effective_length_mm": 216, "match_ready": false }, { "id": "tonearm:775:shure-m216", "display_name": "Shure M216", "manufacturer": "Shure", "model": "M216", "effective_length_mm": 279, "match_ready": false }, { "id": "tonearm:776:shure-m232", "display_name": "Shure M232", "manufacturer": "Shure", "model": "M232", "match_ready": false }, { "id": "tonearm:777:shure-m236", "display_name": "Shure M236", "manufacturer": "Shure", "model": "M236", "match_ready": false }, { "id": "tonearm:778:shure-model-901d", "display_name": "Shure model 901D", "manufacturer": "Shure", "model": "model 901D", "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:779:sumiko-mdc-800-the-arm", "display_name": "Sumiko MDC-800 The Arm", "manufacturer": "Sumiko", "model": "MDC-800 The Arm", "effective_mass_g": 11, "effective_length_mm": 228.6, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 18 }, "match_ready": true }, { "id": "tonearm:780:sumiko-premier-ft-3", "display_name": "Sumiko Premier FT-3", "manufacturer": "Sumiko", "model": "Premier FT-3", "effective_length_mm": 239, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2, "max": 14 }, "match_ready": false }, { "id": "tonearm:781:sony-pmpk-dj9000", "display_name": "Sony PMPK-DJ9000", "manufacturer": "Sony", "model": "PMPK-DJ9000", "match_ready": false }, { "id": "tonearm:782:sony-ps-11", "display_name": "Sony PS-11", "manufacturer": "Sony", "model": "PS-11", "effective_length_mm": 216.5, "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": false }, { "id": "tonearm:783:sony-ps-1150", "display_name": "Sony PS-1150", "manufacturer": "Sony", "model": "PS-1150", "effective_length_mm": 212, "cartridge_weight_range_g": { "min": 4, "max": 8 }, "match_ready": false }, { "id": "tonearm:784:sony-ps-2250", "display_name": "Sony PS-2250", "manufacturer": "Sony", "model": "PS-2250", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 4, "max": 17 }, "match_ready": false }, { "id": "tonearm:785:sony-ps-3750", "display_name": "Sony PS-3750", "manufacturer": "Sony", "model": "PS-3750", "effective_length_mm": 216.5, "cartridge_weight_range_g": { "min": 4, "max": 15.5 }, "match_ready": false }, { "id": "tonearm:786:sony-ps-4300", "display_name": "Sony PS-4300", "manufacturer": "Sony", "model": "PS-4300", "effective_length_mm": 216.5, "cartridge_weight_range_g": { "min": 4, "max": 15.5 }, "match_ready": false }, { "id": "tonearm:787:sony-ps-4750", "display_name": "Sony PS-4750", "manufacturer": "Sony", "model": "PS-4750", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 16.5 }, "match_ready": false }, { "id": "tonearm:788:sony-ps-5100", "display_name": "Sony PS-5100", "manufacturer": "Sony", "model": "PS-5100", "match_ready": false }, { "id": "tonearm:789:sony-ps-5520", "display_name": "Sony PS-5520", "manufacturer": "Sony", "model": "PS-5520", "effective_length_mm": 215, "cartridge_weight_range_g": { "min": 4, "max": 14 }, "match_ready": false }, { "id": "tonearm:790:sony-ps-5550", "display_name": "Sony PS-5550", "manufacturer": "Sony", "model": "PS-5550", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 21.5 }, "match_ready": false }, { "id": "tonearm:791:sony-ps-8750", "display_name": "Sony PS-8750", "manufacturer": "Sony", "model": "PS-8750", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 3, "max": 19.5 }, "match_ready": false }, { "id": "tonearm:792:sony-ps-fl7", "display_name": "Sony PS-FL7", "manufacturer": "Sony", "model": "PS-FL7", "effective_length_mm": 75, "match_ready": false }, { "id": "tonearm:793:sony-ps-fl7-ii", "display_name": "Sony PS-FL7 II", "manufacturer": "Sony", "model": "PS-FL7 II", "effective_length_mm": 75, "match_ready": false }, { "id": "tonearm:794:sony-ps-fl77", "display_name": "Sony PS-FL77", "manufacturer": "Sony", "model": "PS-FL77", "effective_length_mm": 100, "cartridge_weight_range_g": { "min": 6, "max": 6 }, "match_ready": false }, { "id": "tonearm:795:sony-ps-j10", "display_name": "Sony PS-J10", "manufacturer": "Sony", "model": "PS-J10", "match_ready": false }, { "id": "tonearm:796:sony-ps-j11", "display_name": "Sony PS-J11", "manufacturer": "Sony", "model": "PS-J11", "match_ready": false }, { "id": "tonearm:797:sony-ps-j20", "display_name": "Sony PS-J20", "manufacturer": "Sony", "model": "PS-J20", "effective_length_mm": 204, "match_ready": false }, { "id": "tonearm:798:sony-ps-lx100", "display_name": "Sony PS-LX100", "manufacturer": "Sony", "model": "PS-LX100", "match_ready": false }, { "id": "tonearm:799:sony-ps-lx120", "display_name": "Sony PS-LX120", "manufacturer": "Sony", "model": "PS-LX120", "match_ready": false }, { "id": "tonearm:800:sony-ps-lx150", "display_name": "Sony PS-LX150", "manufacturer": "Sony", "model": "PS-LX150", "match_ready": false }, { "id": "tonearm:801:zeta-arm", "display_name": "Zeta Arm", "manufacturer": "Zeta", "model": "Arm", "effective_mass_g": 16, "effective_length_mm": 228.6, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 0, "max": 11 }, "match_ready": true }, { "id": "tonearm:802:magnepan-unitrac-1", "display_name": "Magnepan Unitrac 1", "manufacturer": "Magnepan", "model": "Unitrac 1", "effective_mass_g": 7, "effective_length_mm": 241.3, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 12 }, "match_ready": true }, { "id": "tonearm:803:jvc-al-e500", "display_name": "JVC AL-E500", "manufacturer": "JVC", "model": "AL-E500", "match_ready": false }, { "id": "tonearm:804:jvc-al-fq555bk", "display_name": "JVC AL-FQ555BK", "manufacturer": "JVC", "model": "AL-FQ555BK", "effective_length_mm": 220, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:805:jvc-arc-50", "display_name": "JVC ARC-50", "manufacturer": "JVC", "model": "ARC-50", "match_ready": false }, { "id": "tonearm:806:jvc-arm-1000", "display_name": "JVC Arm 1000", "manufacturer": "JVC", "model": "Arm 1000", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:807:jvc-jl-a1", "display_name": "JVC JL-A1", "manufacturer": "JVC", "model": "JL-A1", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:808:jvc-jl-a20", "display_name": "JVC JL-A20", "manufacturer": "JVC", "model": "JL-A20", "match_ready": false }, { "id": "tonearm:809:jvc-jl-a40", "display_name": "JVC JL-A40", "manufacturer": "JVC", "model": "JL-A40", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 14.5, "max": 21.5 }, "match_ready": false }, { "id": "tonearm:810:jvc-jl-b44", "display_name": "JVC JL-B44", "manufacturer": "JVC", "model": "JL-B44", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 12, "max": 32 }, "match_ready": false }, { "id": "tonearm:811:jvc-jl-f30", "display_name": "JVC JL-F30", "manufacturer": "JVC", "model": "JL-F30", "match_ready": false }, { "id": "tonearm:812:jvc-jl-f45", "display_name": "JVC JL-F45", "manufacturer": "JVC", "model": "JL-F45", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 14, "max": 24 }, "match_ready": false }, { "id": "tonearm:813:jvc-l-a120", "display_name": "JVC L-A120", "manufacturer": "JVC", "model": "L-A120", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4.5, "max": 8 }, "match_ready": false }, { "id": "tonearm:814:jvc-l-e22", "display_name": "JVC L-E22", "manufacturer": "JVC", "model": "L-E22", "effective_length_mm": 112, "match_ready": false }, { "id": "tonearm:815:jvc-l-e33", "display_name": "JVC L-E33", "manufacturer": "JVC", "model": "L-E33", "effective_length_mm": 157, "headshell_connector": "p_mount_t4p", "match_ready": false }, { "id": "tonearm:816:jvc-l-e5", "display_name": "JVC L-E5", "manufacturer": "JVC", "model": "L-E5", "effective_length_mm": 142, "match_ready": false }, { "id": "tonearm:817:jvc-l-f210", "display_name": "JVC L-F210", "manufacturer": "JVC", "model": "L-F210", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 4.5, "max": 8 }, "match_ready": false }, { "id": "tonearm:818:jvc-l-f66", "display_name": "JVC L-F66", "manufacturer": "JVC", "model": "L-F66", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 12.5, "max": 18.5 }, "match_ready": false }, { "id": "tonearm:819:jvc-l-l1", "display_name": "JVC L-L1", "manufacturer": "JVC", "model": "L-L1", "effective_length_mm": 157, "match_ready": false }, { "id": "tonearm:820:jvc-ql-10", "display_name": "JVC QL-10", "manufacturer": "JVC", "model": "QL-10", "effective_length_mm": 245, "match_ready": false }, { "id": "tonearm:821:jvc-ql-5", "display_name": "JVC QL-5", "manufacturer": "JVC", "model": "QL-5", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 14.5, "max": 22 }, "match_ready": false }, { "id": "tonearm:822:jvc-ql-7", "display_name": "JVC QL-7", "manufacturer": "JVC", "model": "QL-7", "match_ready": false }, { "id": "tonearm:823:audio-technica-at-1001", "display_name": "Audio Technica AT 1001", "manufacturer": "Audio Technica", "model": "AT 1001", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:824:audio-technica-at-1005-mkii", "display_name": "Audio Technica AT 1005 mkII", "manufacturer": "Audio Technica", "model": "AT 1005 mkII", "effective_mass_g": 20, "effective_length_mm": 240, "cartridge_weight_range_g": { "min": 5, "max": 24 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "AT-1005 source confirms universal SME-type bayonet headshell; no explicit inclusion/exclusion statement for effective mass found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Audio-Technica universal SME-type headshell (mass not verified)", "source_urls": [ "https://www.vinylengine.com/library/audio-technica/at-1005.shtml", "https://www.petervis.com/hi-fi-info/audio-technica-1981-cartridges-and-tone-arms/at1005-mk2.html" ] } }, { "id": "tonearm:825:audio-technica-at-1007", "display_name": "Audio Technica AT 1007", "manufacturer": "Audio Technica", "model": "AT 1007", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:826:audio-technica-at-1009", "display_name": "Audio Technica AT 1009", "manufacturer": "Audio Technica", "model": "AT 1009", "effective_mass_g": 18, "effective_length_mm": 240, "cartridge_weight_range_g": { "min": 4, "max": 20 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "Audio-Technica source search did not verify whether the 18 g effective mass for Audio Technica AT 1009 includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Audio-Technica removable headshell family where applicable", "source_urls": [ "https://www.vinylengine.com/library/audio-technica.shtml", "https://www.audio-technica.com/en-gb/support/identifying-the-correct-headshell-for-your-turntable" ] } }, { "id": "tonearm:827:audio-technica-at-1010", "display_name": "Audio Technica AT 1010", "manufacturer": "Audio Technica", "model": "AT 1010", "effective_mass_g": 16, "effective_length_mm": 240, "cartridge_weight_range_g": { "min": 4, "max": 24 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Audio-Technica source search did not verify whether the 16 g effective mass for Audio Technica AT 1010 includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Audio-Technica removable headshell family where applicable", "source_urls": [ "https://www.vinylengine.com/library/audio-technica.shtml", "https://www.audio-technica.com/en-gb/support/identifying-the-correct-headshell-for-your-turntable" ] } }, { "id": "tonearm:828:audio-technica-at-1100-s-arm", "display_name": "Audio Technica AT 1100 (s arm)", "manufacturer": "Audio Technica", "model": "AT 1100 (s arm)", "effective_mass_g": 12.5, "effective_length_mm": 240, "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Audio-Technica source search did not verify whether the 12.5 g effective mass for Audio Technica AT 1100 (s arm) includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Audio-Technica removable headshell family where applicable", "source_urls": [ "https://www.vinylengine.com/library/audio-technica.shtml", "https://www.audio-technica.com/en-gb/support/identifying-the-correct-headshell-for-your-turntable" ] } }, { "id": "tonearm:829:audio-technica-at-1100-straight-am", "display_name": "Audio Technica AT 1100 (straight am)", "manufacturer": "Audio Technica", "model": "AT 1100 (straight am)", "effective_mass_g": 6, "effective_length_mm": 240, "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Audio-Technica source search did not verify whether the 6 g effective mass for Audio Technica AT 1100 (straight am) includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Audio-Technica removable headshell family where applicable", "source_urls": [ "https://www.vinylengine.com/library/audio-technica.shtml", "https://www.audio-technica.com/en-gb/support/identifying-the-correct-headshell-for-your-turntable" ] } }, { "id": "tonearm:830:audio-technica-at-1120", "display_name": "Audio Technica AT 1120", "manufacturer": "Audio Technica", "model": "AT 1120", "effective_mass_g": 5, "effective_length_mm": 240, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2, "max": 9 }, "match_ready": true }, { "id": "tonearm:831:audio-technica-at-1130", "display_name": "Audio Technica AT 1130", "manufacturer": "Audio Technica", "model": "AT 1130", "effective_length_mm": 244, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": false }, { "id": "tonearm:832:audio-technica-at-1500", "display_name": "Audio Technica AT 1500", "manufacturer": "Audio Technica", "model": "AT 1500", "match_ready": false }, { "id": "tonearm:833:audio-technica-at-1501-i", "display_name": "Audio Technica AT 1501 I", "manufacturer": "Audio Technica", "model": "AT 1501 I", "effective_length_mm": 282, "match_ready": false }, { "id": "tonearm:834:audio-technica-at-1501-ii", "display_name": "Audio Technica AT 1501 II", "manufacturer": "Audio Technica", "model": "AT 1501 II", "effective_length_mm": 282, "match_ready": false }, { "id": "tonearm:835:audio-technica-at-1501-iii", "display_name": "Audio Technica AT 1501 III", "manufacturer": "Audio Technica", "model": "AT 1501 III", "effective_length_mm": 285, "match_ready": false }, { "id": "tonearm:836:audio-technica-at-1501-iv", "display_name": "Audio Technica AT 1501 IV", "manufacturer": "Audio Technica", "model": "AT 1501 IV", "effective_length_mm": 285, "match_ready": false }, { "id": "tonearm:837:audio-technica-at-1503-i", "display_name": "Audio Technica AT 1503 I", "manufacturer": "Audio Technica", "model": "AT 1503 I", "effective_length_mm": 254, "match_ready": false }, { "id": "tonearm:838:audio-technica-at-1503-ii", "display_name": "Audio Technica AT 1503 II", "manufacturer": "Audio Technica", "model": "AT 1503 II", "effective_length_mm": 254, "match_ready": false }, { "id": "tonearm:839:audio-technica-at-1503-iii", "display_name": "Audio Technica AT 1503 III", "manufacturer": "Audio Technica", "model": "AT 1503 III", "effective_mass_g": 20, "effective_length_mm": 257, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Audio-Technica source search did not verify whether the 20 g effective mass for Audio Technica AT 1503 III includes the removable headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "standard_headshell_model": "Audio-Technica removable headshell family where applicable", "source_urls": [ "https://www.vinylengine.com/library/audio-technica.shtml", "https://www.audio-technica.com/en-gb/support/identifying-the-correct-headshell-for-your-turntable" ] } }, { "id": "tonearm:840:audio-technica-at-1503-iiia", "display_name": "Audio Technica AT 1503 IIIa", "manufacturer": "Audio Technica", "model": "AT 1503 IIIa", "effective_length_mm": 257, "match_ready": false }, { "id": "tonearm:841:audio-technica-at-1503-iv", "display_name": "Audio Technica AT 1503 IV", "manufacturer": "Audio Technica", "model": "AT 1503 IV", "effective_length_mm": 257, "match_ready": false }, { "id": "tonearm:842:audio-technica-at-770", "display_name": "Audio Technica AT 770", "manufacturer": "Audio Technica", "model": "AT 770", "match_ready": false }, { "id": "tonearm:843:excel-sound-corporation-es-1000", "display_name": "Excel Sound Corporation ES-1000", "manufacturer": "Excel Sound Corporation", "model": "ES-1000", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:844:excel-sound-corporation-es-701", "display_name": "Excel Sound Corporation ES-701", "manufacturer": "Excel Sound Corporation", "model": "ES-701", "effective_length_mm": 225, "match_ready": false }, { "id": "tonearm:845:excel-sound-corporation-es-801", "display_name": "Excel Sound Corporation ES-801", "manufacturer": "Excel Sound Corporation", "model": "ES-801", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 3, "max": 18 }, "match_ready": false }, { "id": "tonearm:846:excel-sound-corporation-pro-sita", "display_name": "Excel Sound Corporation Pro SITA", "manufacturer": "Excel Sound Corporation", "model": "Pro SITA", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:847:pole-star-ps-univ1", "display_name": "Pole Star PS-UNIV1", "manufacturer": "Pole Star", "model": "PS-UNIV1", "effective_length_mm": 228, "match_ready": false }, { "id": "tonearm:848:jml-ta-3a", "display_name": "JML TA 3A", "manufacturer": "JML", "model": "TA 3A", "effective_length_mm": 229, "match_ready": false }, { "id": "tonearm:849:taya-mp-200", "display_name": "Taya MP-200", "manufacturer": "Taya", "model": "MP-200", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:850:jvc-srp-473e", "display_name": "JVC SRP-473E", "manufacturer": "JVC", "model": "SRP-473E", "cartridge_weight_range_g": { "min": 13, "max": 34 }, "match_ready": false }, { "id": "tonearm:851:vestax-bdt-2500", "display_name": "Vestax BDT-2500", "manufacturer": "Vestax", "model": "BDT-2500", "match_ready": false }, { "id": "tonearm:852:vestax-pdt-5000", "display_name": "Vestax PDT-5000", "manufacturer": "Vestax", "model": "PDT-5000", "match_ready": false }, { "id": "tonearm:853:vestax-pdx-2000", "display_name": "Vestax PDX-2000", "manufacturer": "Vestax", "model": "PDX-2000", "effective_length_mm": 200, "match_ready": false }, { "id": "tonearm:854:vestax-pdx-2300", "display_name": "Vestax PDX-2300", "manufacturer": "Vestax", "model": "PDX-2300", "match_ready": false }, { "id": "tonearm:855:vestax-pdx-8000", "display_name": "Vestax PDX-8000", "manufacturer": "Vestax", "model": "PDX-8000", "match_ready": false }, { "id": "tonearm:856:vestax-pdx-a1", "display_name": "Vestax PDX-a1", "manufacturer": "Vestax", "model": "PDX-a1", "match_ready": false }, { "id": "tonearm:857:vestax-pdx-a2", "display_name": "Vestax PDX-a2", "manufacturer": "Vestax", "model": "PDX-a2", "match_ready": false }, { "id": "tonearm:858:vestax-pdx-d3", "display_name": "Vestax PDX-D3", "manufacturer": "Vestax", "model": "PDX-D3", "match_ready": false }, { "id": "tonearm:859:vestax-petit-pop", "display_name": "Vestax Petit Pop", "manufacturer": "Vestax", "model": "Petit Pop", "match_ready": false }, { "id": "tonearm:860:vestax-pvt-e2", "display_name": "Vestax PVT-e2", "manufacturer": "Vestax", "model": "PVT-e2", "match_ready": false }, { "id": "tonearm:861:vestax-qfo", "display_name": "Vestax QFO", "manufacturer": "Vestax", "model": "QFO", "match_ready": false }, { "id": "tonearm:862:sony-pua-1500-l", "display_name": "Sony PUA-1500 L", "manufacturer": "Sony", "model": "PUA-1500 L", "effective_length_mm": 286, "match_ready": false }, { "id": "tonearm:863:sony-pua-1500-s", "display_name": "Sony PUA-1500 S", "manufacturer": "Sony", "model": "PUA-1500 S", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:864:numark-pro-tt1", "display_name": "Numark Pro TT1", "manufacturer": "Numark", "model": "Pro TT1", "effective_length_mm": 234, "cartridge_weight_range_g": { "min": 6, "max": 10 }, "match_ready": false }, { "id": "tonearm:865:numark-pro-tt2", "display_name": "Numark Pro TT2", "manufacturer": "Numark", "model": "Pro TT2", "effective_mass_g": 10, "effective_length_mm": 234, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 6, "max": 10 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "PRO TT-2 manual confirms headshell locking nut / removable headshell, but no effective-mass basis was found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "standard_headshell_model": "DJ SME-type headshell not verified", "source_urls": [ "https://www.manualslib.com/manual/113496/Numark-Pro-Tt-2.html", "https://manualzz.com/doc/22597499/numark-industries-pro-tt-2-user-manual" ] } }, { "id": "tonearm:866:numark-pt01", "display_name": "Numark PT01", "manufacturer": "Numark", "model": "PT01", "match_ready": false }, { "id": "tonearm:867:numark-tt-usb", "display_name": "Numark TT USB", "manufacturer": "Numark", "model": "TT USB", "match_ready": false }, { "id": "tonearm:868:numark-tt100", "display_name": "Numark TT100", "manufacturer": "Numark", "model": "TT100", "effective_length_mm": 234, "cartridge_weight_range_g": { "min": 6, "max": 10 }, "match_ready": false }, { "id": "tonearm:869:numark-tt1510", "display_name": "Numark TT1510", "manufacturer": "Numark", "model": "TT1510", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:870:numark-tt1520", "display_name": "Numark TT1520", "manufacturer": "Numark", "model": "TT1520", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:871:numark-tt1600", "display_name": "Numark TT1600", "manufacturer": "Numark", "model": "TT1600", "match_ready": false }, { "id": "tonearm:872:numark-tt1610", "display_name": "Numark TT1610", "manufacturer": "Numark", "model": "TT1610", "match_ready": false }, { "id": "tonearm:873:numark-tt1650", "display_name": "Numark TT1650", "manufacturer": "Numark", "model": "TT1650", "match_ready": false }, { "id": "tonearm:874:numark-tt1700", "display_name": "Numark TT1700", "manufacturer": "Numark", "model": "TT1700", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:875:numark-tt1910", "display_name": "Numark TT1910", "manufacturer": "Numark", "model": "TT1910", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:876:numark-tt200", "display_name": "Numark TT200", "manufacturer": "Numark", "model": "TT200", "match_ready": false }, { "id": "tonearm:877:numark-tt500", "display_name": "Numark TT500", "manufacturer": "Numark", "model": "TT500", "match_ready": false }, { "id": "tonearm:878:numark-ttx", "display_name": "Numark TTX", "manufacturer": "Numark", "model": "TTX", "match_ready": false }, { "id": "tonearm:879:numark-ttx-1", "display_name": "Numark TTX 1", "manufacturer": "Numark", "model": "TTX 1", "match_ready": false }, { "id": "tonearm:880:jvc-vc-9", "display_name": "JVC VC-9", "manufacturer": "JVC", "model": "VC-9", "match_ready": false }, { "id": "tonearm:881:jvc-vl-5", "display_name": "JVC VL-5", "manufacturer": "JVC", "model": "VL-5", "match_ready": false }, { "id": "tonearm:882:jvc-vl-8", "display_name": "JVC VL-8", "manufacturer": "JVC", "model": "VL-8", "match_ready": false }, { "id": "tonearm:883:lepton-dv-one", "display_name": "Lepton DV One", "manufacturer": "Lepton", "model": "DV One", "match_ready": false }, { "id": "tonearm:884:sonographe-lmt", "display_name": "Sonographe LMT", "manufacturer": "Sonographe", "model": "LMT", "effective_mass_g": 9, "effective_length_mm": 232, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Sonographe LMT source check did not verify headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/sonographe.shtml" ] } }, { "id": "tonearm:885:pro-ject-1", "display_name": "Pro-ject 1", "manufacturer": "Pro-ject", "model": "1", "match_ready": false }, { "id": "tonearm:886:pro-ject-1-2", "display_name": "Pro-ject 1.2", "manufacturer": "Pro-ject", "model": "1.2", "match_ready": false }, { "id": "tonearm:887:pro-ject-10", "display_name": "Pro-ject 10", "manufacturer": "Pro-ject", "model": "10", "match_ready": false }, { "id": "tonearm:888:pro-ject-12-c", "display_name": "Pro-ject 12 C", "manufacturer": "Pro-ject", "model": "12 C", "effective_mass_g": 11.5, "effective_length_mm": 305, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Pro-Ject legacy stock arm/product context indicates integrated headshell arm design; no separate removable headshell mass should be assumed.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Pro-Ject arm/headshell", "source_urls": [ "https://www.project-audio.com/en/" ] } }, { "id": "tonearm:889:pro-ject-2", "display_name": "Pro-ject 2", "manufacturer": "Pro-ject", "model": "2", "match_ready": false }, { "id": "tonearm:890:pro-ject-2-9", "display_name": "Pro-ject 2.9", "manufacturer": "Pro-ject", "model": "2.9", "match_ready": false }, { "id": "tonearm:891:pro-ject-6", "display_name": "Pro-ject 6", "manufacturer": "Pro-ject", "model": "6", "match_ready": false }, { "id": "tonearm:892:pro-ject-6-1", "display_name": "Pro-ject 6.1", "manufacturer": "Pro-ject", "model": "6.1", "match_ready": false }, { "id": "tonearm:893:pro-ject-6-9", "display_name": "Pro-ject 6.9", "manufacturer": "Pro-ject", "model": "6.9", "match_ready": false }, { "id": "tonearm:894:pro-ject-9", "display_name": "Pro-ject 9", "manufacturer": "Pro-ject", "model": "9", "effective_mass_g": 11, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:895:pro-ject-9-c", "display_name": "Pro-ject 9 C", "manufacturer": "Pro-ject", "model": "9 C", "effective_mass_g": 11, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:896:pro-ject-debut", "display_name": "Pro-ject Debut", "manufacturer": "Pro-ject", "model": "Debut", "effective_mass_g": 9.5, "effective_length_mm": 218.5, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Pro-Ject legacy stock arm/product context indicates integrated headshell arm design; no separate removable headshell mass should be assumed.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Pro-Ject arm/headshell", "source_urls": [ "https://www.project-audio.com/en/" ] } }, { "id": "tonearm:897:pro-ject-perspective", "display_name": "Pro-ject Perspective", "manufacturer": "Pro-ject", "model": "Perspective", "match_ready": false }, { "id": "tonearm:898:pro-ject-rpm-4", "display_name": "Pro-ject RPM 4", "manufacturer": "Pro-ject", "model": "RPM 4", "match_ready": false }, { "id": "tonearm:899:pro-ject-rpm-6", "display_name": "Pro-ject RPM 6", "manufacturer": "Pro-ject", "model": "RPM 6", "match_ready": false }, { "id": "tonearm:900:pro-ject-rpm-9", "display_name": "Pro-ject RPM 9", "manufacturer": "Pro-ject", "model": "RPM 9", "match_ready": false }, { "id": "tonearm:901:vertere-reference-ta", "display_name": "Vertere Reference TA", "manufacturer": "Vertere", "model": "Reference TA", "match_ready": false }, { "id": "tonearm:902:vertere-sg-1-tpa", "display_name": "Vertere SG-1 TPA", "manufacturer": "Vertere", "model": "SG-1 TPA", "match_ready": false }, { "id": "tonearm:903:sony-ps-lx430-c", "display_name": "Sony PS-LX430 C", "manufacturer": "Sony", "model": "PS-LX430 C", "effective_length_mm": 216.5, "cartridge_weight_range_g": { "min": 6, "max": 6 }, "match_ready": false }, { "id": "tonearm:904:broadcast-electronics-s-260", "display_name": "Broadcast Electronics S-260", "manufacturer": "Broadcast Electronics", "model": "S-260", "match_ready": false }, { "id": "tonearm:905:broadcast-electronics-s-320", "display_name": "Broadcast Electronics S-320", "manufacturer": "Broadcast Electronics", "model": "S-320", "match_ready": false }, { "id": "tonearm:906:sony-pua-1600-l", "display_name": "Sony PUA-1600 L", "manufacturer": "Sony", "model": "PUA-1600 L", "effective_length_mm": 286, "match_ready": false }, { "id": "tonearm:907:sony-pua-1600-s", "display_name": "Sony PUA-1600 S", "manufacturer": "Sony", "model": "PUA-1600 S", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:908:sony-pua-237", "display_name": "Sony PUA-237", "manufacturer": "Sony", "model": "PUA-237", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:909:sony-pua-286", "display_name": "Sony PUA-286", "manufacturer": "Sony", "model": "PUA-286", "effective_length_mm": 286, "match_ready": false }, { "id": "tonearm:910:sony-pua-310", "display_name": "Sony PUA-310", "manufacturer": "Sony", "model": "PUA-310", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 21.5 }, "match_ready": false }, { "id": "tonearm:911:dynavector-dv-501", "display_name": "Dynavector DV 501", "manufacturer": "Dynavector", "model": "DV 501", "effective_mass_g": 25, "effective_length_mm": 241, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Dynavector DV-501 source check did not locate an explicit headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/dynavector/dv-501.shtml" ] } }, { "id": "tonearm:912:dynavector-dv-505", "display_name": "Dynavector DV 505", "manufacturer": "Dynavector", "model": "DV 505", "effective_length_mm": 241, "match_ready": false }, { "id": "tonearm:913:dynavector-dv-507", "display_name": "Dynavector DV 507", "manufacturer": "Dynavector", "model": "DV 507", "effective_length_mm": 241, "match_ready": false }, { "id": "tonearm:914:dynavector-dv-507-mk2", "display_name": "Dynavector DV 507 mk2", "manufacturer": "Dynavector", "model": "DV 507 mk2", "effective_length_mm": 241, "cartridge_weight_range_g": { "min": 15, "max": 35 }, "match_ready": false }, { "id": "tonearm:915:townshend-excalibur", "display_name": "Townshend Excalibur", "manufacturer": "Townshend", "model": "Excalibur", "effective_length_mm": 230, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": false }, { "id": "tonearm:916:jvc-ql-8", "display_name": "JVC QL-8", "manufacturer": "JVC", "model": "QL-8", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 12, "max": 32 }, "match_ready": false }, { "id": "tonearm:917:jvc-ql-a2", "display_name": "JVC QL-A2", "manufacturer": "JVC", "model": "QL-A2", "match_ready": false }, { "id": "tonearm:918:jvc-ql-a220", "display_name": "JVC QL-A220", "manufacturer": "JVC", "model": "QL-A220", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:919:jvc-ql-a5", "display_name": "JVC QL-A5", "manufacturer": "JVC", "model": "QL-A5", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 12.5, "max": 18.5 }, "match_ready": false }, { "id": "tonearm:920:jvc-ql-a7", "display_name": "JVC QL-A7", "manufacturer": "JVC", "model": "QL-A7", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 4.5, "max": 13.5 }, "match_ready": false }, { "id": "tonearm:921:jvc-ql-a75-s-arm", "display_name": 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"Jelco", "model": "TS-550L", "match_ready": false }, { "id": "tonearm:1014:amg-12j2", "display_name": "AMG 12J2", "manufacturer": "AMG", "model": "12J2", "match_ready": false }, { "id": "tonearm:1015:amg-9w1", "display_name": "AMG 9W1", "manufacturer": "AMG", "model": "9W1", "match_ready": false }, { "id": "tonearm:1016:amg-9w2", "display_name": "AMG 9W2", "manufacturer": "AMG", "model": "9W2", "match_ready": false }, { "id": "tonearm:1017:pickering-fa112", "display_name": "Pickering FA112", "manufacturer": "Pickering", "model": "FA112", "match_ready": false }, { "id": "tonearm:1018:pickering-fa145", "display_name": "Pickering FA145", "manufacturer": "Pickering", "model": "FA145", "match_ready": false }, { "id": "tonearm:1019:pickering-model-161", "display_name": "Pickering model 161", "manufacturer": "Pickering", "model": "model 161", "match_ready": false }, { "id": "tonearm:1020:pickering-model-190", "display_name": "Pickering model 190", "manufacturer": "Pickering", "model": "model 190", "match_ready": false }, { "id": "tonearm:1021:pickering-model-194", "display_name": "Pickering model 194", "manufacturer": "Pickering", "model": "model 194", "effective_length_mm": 215.9, "match_ready": false }, { "id": "tonearm:1022:pickering-model-200", "display_name": "Pickering model 200", "manufacturer": "Pickering", "model": "model 200", "match_ready": false }, { "id": "tonearm:1023:pioneer-pl-3f", "display_name": "Pioneer PL-3F", "manufacturer": "Pioneer", "model": "PL-3F", "effective_length_mm": 235, "cartridge_weight_range_g": { "min": 3, "max": 8.5 }, "match_ready": false }, { "id": "tonearm:1024:sony-ps-lx200", "display_name": "Sony PS-LX200", "manufacturer": "Sony", "model": "PS-LX200", "effective_length_mm": 195, "match_ready": false }, { "id": "tonearm:1025:toshiba-sr-370", "display_name": "Toshiba SR-370", "manufacturer": "Toshiba", "model": "SR-370", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 20 }, "match_ready": false }, { "id": "tonearm:1026:toshiba-sr-50", "display_name": "Toshiba SR-50", "manufacturer": "Toshiba", "model": "SR-50", "match_ready": false }, { "id": "tonearm:1027:toshiba-sr-510c", "display_name": "Toshiba SR-510C", "manufacturer": "Toshiba", "model": "SR-510C", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1028:decca-ffss-mki", "display_name": "Decca FFSS mkI", "manufacturer": "Decca", "model": "FFSS mkI", "match_ready": false }, { "id": "tonearm:1029:decca-ffss-arm", "display_name": "Decca FFSS Arm", "manufacturer": "Decca", "model": "FFSS Arm", "match_ready": false }, { "id": "tonearm:1030:decca-international", "display_name": "Decca International", "manufacturer": "Decca", "model": "International", "match_ready": false }, { "id": "tonearm:1031:decca-london-international", "display_name": "Decca London International", "manufacturer": "Decca", "model": "London International", "effective_length_mm": 232, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": false }, { "id": "tonearm:1032:tesla-p-1101", "display_name": "Tesla P 1101", "manufacturer": "Tesla", "model": "P 1101", "effective_length_mm": 235, "match_ready": false }, { "id": "tonearm:1033:jvc-ql-y66f-s-arm", "display_name": "JVC QL-Y66F s arm", "manufacturer": "JVC", "model": "QL-Y66F s arm", "effective_length_mm": 254, "cartridge_weight_range_g": { "min": 8, "max": 21 }, "match_ready": false }, { "id": "tonearm:1034:bsr-810", "display_name": "BSR 810", "manufacturer": "BSR", "model": "810", "cartridge_weight_range_g": { "min": 0, "max": 12 }, "match_ready": false }, { "id": "tonearm:1035:bsr-accuglide-xr-50", "display_name": "BSR Accuglide XR-50", "manufacturer": "BSR", "model": "Accuglide XR-50", "effective_length_mm": 221, "match_ready": false }, { "id": "tonearm:1036:bsr-c159", "display_name": "BSR C159", "manufacturer": "BSR", "model": "C159", "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1037:bsr-p157", "display_name": "BSR P157", "manufacturer": "BSR", "model": "P157", "match_ready": false }, { "id": "tonearm:1038:bsr-p204", "display_name": "BSR P204", "manufacturer": "BSR", "model": "P204", "match_ready": false }, { "id": "tonearm:1039:sonab-85s", "display_name": "Sonab 85S", "manufacturer": "Sonab", "model": "85S", "match_ready": false }, { "id": "tonearm:1040:micro-seiki-bl-10x", "display_name": "Micro Seiki BL-10X", "manufacturer": "Micro Seiki", "model": "BL-10X", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": false }, { "id": "tonearm:1041:micro-seiki-bl-51", "display_name": "Micro Seiki BL-51", "manufacturer": "Micro Seiki", "model": "BL-51", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1042:micro-seiki-bl-91", "display_name": "Micro Seiki BL-91", "manufacturer": "Micro Seiki", "model": "BL-91", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1043:micro-seiki-dd-33", "display_name": "Micro Seiki DD-33", "manufacturer": "Micro Seiki", "model": "DD-33", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1044:micro-seiki-dd-35", "display_name": "Micro Seiki DD-35", "manufacturer": "Micro Seiki", "model": "DD-35", "effective_length_mm": 222, "match_ready": false }, { "id": "tonearm:1045:micro-seiki-dd-40", "display_name": "Micro Seiki DD-40", "manufacturer": "Micro Seiki", "model": "DD-40", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1046:micro-seiki-ma-100", "display_name": "Micro Seiki MA-100", "manufacturer": "Micro Seiki", "model": "MA-100", "effective_length_mm": 291, "match_ready": false }, { "id": "tonearm:1047:micro-seiki-ma-101", "display_name": "Micro Seiki MA-101", "manufacturer": "Micro Seiki", "model": "MA-101", "effective_length_mm": 267, "match_ready": false }, { "id": "tonearm:1048:micro-seiki-ma-101-mk-ii", "display_name": "Micro Seiki MA-101 mk II", "manufacturer": "Micro Seiki", "model": "MA-101 mk II", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1049:micro-seiki-ma-202", "display_name": "Micro Seiki MA-202", "manufacturer": "Micro Seiki", "model": "MA-202", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1050:micro-seiki-ma-202-l", "display_name": "Micro Seiki MA-202 L", "manufacturer": "Micro Seiki", "model": "MA-202 L", "effective_length_mm": 252, "match_ready": false }, { "id": "tonearm:1051:micro-seiki-ma-303", "display_name": "Micro Seiki MA-303", "manufacturer": "Micro Seiki", "model": "MA-303", "effective_length_mm": 222, "match_ready": false }, { "id": "tonearm:1052:micro-seiki-ma-505-l", "display_name": "Micro Seiki MA-505 L", "manufacturer": "Micro Seiki", "model": "MA-505 L", "effective_length_mm": 282, "match_ready": false }, { "id": "tonearm:1053:micro-seiki-ma-505-mkii", "display_name": "Micro Seiki MA-505 mkII", "manufacturer": "Micro Seiki", "model": "MA-505 mkII", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 15 }, "match_ready": false }, { "id": "tonearm:1054:micro-seiki-ma-7000-x", "display_name": "Micro Seiki MA-7000 X", "manufacturer": "Micro Seiki", "model": "MA-7000 X", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1055:sony-ps-x555es", "display_name": "Sony PS-X555ES", "manufacturer": "Sony", "model": "PS-X555ES", "effective_length_mm": 130, "cartridge_weight_range_g": { "min": 2.8, "max": 12.3 }, "match_ready": false }, { "id": "tonearm:1056:sony-pse-4000", "display_name": "Sony PSE-4000", "manufacturer": "Sony", "model": "PSE-4000", "match_ready": false }, { "id": "tonearm:1057:bbc-mp1-18", "display_name": "BBC MP1-18", "manufacturer": "BBC", "model": "MP1-18", "effective_length_mm": 248, "match_ready": false }, { "id": "tonearm:1058:logic-datum", "display_name": "Logic Datum", "manufacturer": "Logic", "model": "Datum", "effective_mass_g": 10.5, "effective_length_mm": 228, "cartridge_weight_range_g": { "min": 4, "max": 20 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Logic Datum source check did not verify headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/logic.shtml" ] } }, { "id": "tonearm:1059:logic-datum-mk-ii", "display_name": "Logic Datum mk II", "manufacturer": "Logic", "model": "Datum mk II", "effective_length_mm": 228, "cartridge_weight_range_g": { "min": 4, "max": 20 }, "match_ready": false }, { "id": "tonearm:1060:logic-datum-s", "display_name": "Logic Datum S", "manufacturer": "Logic", "model": "Datum S", "effective_length_mm": 228, "cartridge_weight_range_g": { "min": 4, "max": 20 }, "match_ready": false }, { "id": "tonearm:1061:sparta-st-220", "display_name": "Sparta ST-220", "manufacturer": "Sparta", "model": "ST-220", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:1062:micro-seiki-ma-77-sr", "display_name": "Micro Seiki MA-77 SR", "manufacturer": "Micro Seiki", "model": "MA-77 SR", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1063:micro-seiki-ma-77-sr-mkii", "display_name": "Micro Seiki MA-77 SR mkII", "manufacturer": "Micro Seiki", "model": "MA-77 SR mkII", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1064:micro-seiki-ma-88", "display_name": "Micro Seiki MA-88", "manufacturer": "Micro Seiki", "model": "MA-88", "match_ready": false }, { "id": "tonearm:1065:micro-seiki-max-237", "display_name": "Micro Seiki MAX 237", "manufacturer": "Micro Seiki", "model": "MAX 237", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": false }, { "id": "tonearm:1066:micro-seiki-max-282", "display_name": "Micro Seiki MAX 282", "manufacturer": "Micro Seiki", "model": "MAX 282", "effective_length_mm": 282, "match_ready": false }, { "id": "tonearm:1067:micro-seiki-mr-122", "display_name": "Micro Seiki MR-122", "manufacturer": "Micro Seiki", "model": "MR-122", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 4, "max": 6 }, "match_ready": false }, { "id": "tonearm:1068:micro-seiki-mr-611", "display_name": "Micro Seiki MR-611", "manufacturer": "Micro Seiki", "model": "MR-611", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1069:micro-seiki-mr-711", "display_name": "Micro Seiki MR-711", "manufacturer": "Micro Seiki", "model": "MR-711", "effective_length_mm": 252, "match_ready": false }, { "id": "tonearm:1070:jvc-ua-5045", "display_name": "JVC UA-5045", "manufacturer": "JVC", "model": "UA-5045", "effective_length_mm": 245, "match_ready": false }, { "id": "tonearm:1071:jvc-ua-7045", "display_name": "JVC UA-7045", "manufacturer": "JVC", "model": "UA-7045", "effective_length_mm": 245, "match_ready": false }, { "id": "tonearm:1072:jvc-ua-7082", "display_name": "JVC UA-7082", "manufacturer": "JVC", "model": "UA-7082", "effective_length_mm": 282, "match_ready": false }, { "id": "tonearm:1073:jvc-ua-77", "display_name": "JVC UA-77", "manufacturer": "JVC", "model": "UA-77", "match_ready": false }, { "id": "tonearm:1074:eat-f-note", "display_name": "EAT F-Note", "manufacturer": "EAT", "model": "F-Note", "match_ready": false }, { "id": "tonearm:1075:grundig-ps-1010", "display_name": "Grundig PS 1010", "manufacturer": "Grundig", "model": "PS 1010", "match_ready": false }, { "id": "tonearm:1076:grundig-ps-8000", "display_name": "Grundig PS 8000", "manufacturer": "Grundig", "model": "PS 8000", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1077:panta-rph-340", "display_name": "Panta RPH 340", "manufacturer": "Panta", "model": "RPH 340", "cartridge_weight_range_g": { "min": 6, "max": 10 }, "match_ready": false }, { "id": "tonearm:1078:schroder-dps", "display_name": "Schroder DPS", "manufacturer": "Schroder", "model": "DPS", "effective_length_mm": 239.3, "match_ready": false }, { "id": "tonearm:1079:schroder-model-1", "display_name": "Schroder Model 1", "manufacturer": "Schroder", "model": "Model 1", "match_ready": false }, { "id": "tonearm:1080:schroder-model-2", "display_name": "Schroder Model 2", "manufacturer": "Schroder", "model": "Model 2", "effective_length_mm": 239.3, "match_ready": false }, { "id": "tonearm:1081:schroder-ta1", "display_name": "Schroder TA1", "manufacturer": "Schroder", "model": "TA1", "match_ready": false }, { "id": "tonearm:1082:schroder-the-reference", "display_name": "Schroder The Reference", "manufacturer": "Schroder", "model": "The Reference", "match_ready": false }, { "id": "tonearm:1083:fisher-mt-6250", "display_name": "Fisher MT-6250", "manufacturer": "Fisher", "model": "MT-6250", "effective_length_mm": 222, "match_ready": false }, { "id": "tonearm:1084:fisher-mt-6330", "display_name": "Fisher MT-6330", "manufacturer": "Fisher", "model": "MT-6330", "effective_length_mm": 222, "match_ready": false }, { "id": "tonearm:1085:fisher-mt-9000", "display_name": "Fisher MT-9000", "manufacturer": "Fisher", "model": "MT-9000", "effective_length_mm": 222, "match_ready": false }, { "id": "tonearm:1086:jvc-ql-y7", "display_name": "JVC QL-Y7", "manufacturer": "JVC", "model": "QL-Y7", "effective_length_mm": 245, "cartridge_weight_range_g": { "min": 14.5, "max": 25 }, "match_ready": false }, { "id": "tonearm:1087:ortofon-a-212", "display_name": "Ortofon A 212", "manufacturer": "Ortofon", "model": "A 212", "match_ready": false }, { "id": "tonearm:1088:ortofon-as-212-i", "display_name": "Ortofon AS-212 i", "manufacturer": "Ortofon", "model": "AS-212 i", "effective_length_mm": 228, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1089:ortofon-as-309-i", "display_name": "Ortofon AS-309 i", "manufacturer": "Ortofon", "model": "AS-309 i", "effective_length_mm": 320, "match_ready": false }, { "id": "tonearm:1090:ortofon-rf-297", "display_name": "Ortofon RF 297", "manufacturer": "Ortofon", "model": "RF 297", "match_ready": false }, { "id": "tonearm:1091:ortofon-rf-309", "display_name": "Ortofon RF 309", "manufacturer": "Ortofon", "model": "RF 309", "match_ready": false }, { "id": "tonearm:1092:ortofon-rk-309", "display_name": "Ortofon RK 309", "manufacturer": "Ortofon", "model": "RK 309", "match_ready": false }, { "id": "tonearm:1093:ortofon-rm-309", "display_name": "Ortofon RM 309", "manufacturer": "Ortofon", "model": "RM 309", "match_ready": false }, { "id": "tonearm:1094:ortofon-rma-212i", "display_name": "Ortofon RMA-212i", "manufacturer": "Ortofon", "model": "RMA-212i", "match_ready": false }, { "id": "tonearm:1095:ortofon-rma-309i", "display_name": "Ortofon RMA-309i", "manufacturer": "Ortofon", "model": "RMA-309i", "match_ready": false }, { "id": "tonearm:1096:ortofon-rmg-212", "display_name": "Ortofon RMG-212", "manufacturer": "Ortofon", "model": "RMG-212", "effective_length_mm": 228, "match_ready": false }, { "id": "tonearm:1097:ortofon-rmg-212i", "display_name": "Ortofon RMG-212i", "manufacturer": "Ortofon", "model": "RMG-212i", "match_ready": false }, { "id": "tonearm:1098:ortofon-rmg-309i", "display_name": "Ortofon RMG-309i", "manufacturer": "Ortofon", "model": "RMG-309i", "match_ready": false }, { "id": "tonearm:1099:ortofon-rs-212", "display_name": "Ortofon RS-212", "manufacturer": "Ortofon", "model": "RS-212", "effective_length_mm": 228, "match_ready": false }, { "id": "tonearm:1100:ortofon-rs-212-d", "display_name": "Ortofon RS-212 D", "manufacturer": "Ortofon", "model": "RS-212 D", "effective_length_mm": 229, "match_ready": false }, { "id": "tonearm:1101:ortofon-rs-309-d", "display_name": "Ortofon RS-309 D", "manufacturer": "Ortofon", "model": "RS-309 D", "effective_length_mm": 326, "match_ready": false }, { "id": "tonearm:1102:ortofon-s-212", "display_name": "Ortofon S 212", "manufacturer": "Ortofon", "model": "S 212", "match_ready": false }, { "id": "tonearm:1103:viv-laboratory-rigid-float", "display_name": "ViV Laboratory Rigid Float", "manufacturer": "ViV Laboratory", "model": "Rigid Float", "match_ready": false }, { "id": "tonearm:1104:pioneer-pl-25", "display_name": "Pioneer PL-25", "manufacturer": "Pioneer", "model": "PL-25", "match_ready": false }, { "id": "tonearm:1105:pioneer-pl-300", "display_name": "Pioneer PL-300", "manufacturer": "Pioneer", "model": "PL-300", "effective_length_mm": 221, "cartridge_weight_range_g": { "min": 4, "max": 9 }, "match_ready": false }, { "id": "tonearm:1106:pioneer-pl-30l", "display_name": "Pioneer PL-30L", "manufacturer": "Pioneer", "model": "PL-30L", "effective_length_mm": 250, "match_ready": false }, { "id": "tonearm:1107:nottingham-analogue-ace-anna-arm", "display_name": "Nottingham Analogue Ace Anna Arm", "manufacturer": "Nottingham Analogue", "model": "Ace Anna Arm", "match_ready": false }, { "id": "tonearm:1108:nottingham-analogue-anna-arm-10", "display_name": "Nottingham Analogue Anna Arm 10\"", "manufacturer": "Nottingham Analogue", "model": "Anna Arm 10\"", "effective_mass_g": 13, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Nottingham arm source check indicates fixed/integrated tonearm context; treat as integrated unless a model-specific headshell exception is later found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Nottingham arm/headshell", "source_urls": [ "https://www.vinylengine.com/library/nottingham-analogue.shtml" ] } }, { "id": "tonearm:1109:nottingham-analogue-anna-arm-12", "display_name": "Nottingham Analogue Anna Arm 12\"", "manufacturer": "Nottingham Analogue", "model": "Anna Arm 12\"", "effective_mass_g": 15.5, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Nottingham arm source check indicates fixed/integrated tonearm context; treat as integrated unless a model-specific headshell exception is later found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Nottingham arm/headshell", "source_urls": [ "https://www.vinylengine.com/library/nottingham-analogue.shtml" ] } }, { "id": "tonearm:1110:nottingham-analogue-mentor-arm", "display_name": "Nottingham Analogue Mentor Arm", "manufacturer": "Nottingham Analogue", "model": "Mentor Arm", "effective_mass_g": 14.5, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Nottingham arm source check indicates fixed/integrated tonearm context; treat as integrated unless a model-specific headshell exception is later found.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Nottingham arm/headshell", "source_urls": [ "https://www.vinylengine.com/library/nottingham-analogue.shtml" ] } }, { "id": "tonearm:1111:nottingham-analogue-paragon-arm", "display_name": "Nottingham Analogue Paragon Arm", "manufacturer": "Nottingham Analogue", "model": "Paragon Arm", "match_ready": false }, { "id": "tonearm:1112:nottingham-analogue-rb250", "display_name": "Nottingham Analogue RB250", "manufacturer": "Nottingham Analogue", "model": "RB250", "effective_mass_g": 11.25, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1113:nottingham-analogue-space-arm", "display_name": "Nottingham Analogue Space Arm", "manufacturer": "Nottingham Analogue", "model": "Space Arm", "cartridge_weight_range_g": { "min": 2, "max": 20 }, "match_ready": false }, { "id": "tonearm:1114:acoustical-systems-aquilar", "display_name": "Acoustical Systems Aquilar", "manufacturer": "Acoustical Systems", "model": "Aquilar", "match_ready": false }, { "id": "tonearm:1115:sansui-fr-1080", "display_name": "Sansui FR-1080", "manufacturer": "Sansui", "model": "FR-1080", "match_ready": false }, { "id": "tonearm:1116:sansui-fr-4060", "display_name": "Sansui FR-4060", "manufacturer": "Sansui", "model": "FR-4060", "match_ready": false }, { "id": "tonearm:1117:sansui-fr-5080", "display_name": "Sansui FR-5080", "manufacturer": "Sansui", "model": "FR-5080", "match_ready": false }, { "id": "tonearm:1118:sansui-p-50", "display_name": "Sansui P-50", "manufacturer": "Sansui", "model": "P-50", "match_ready": false }, { "id": "tonearm:1119:sansui-sr-1050", "display_name": "Sansui SR-1050", "manufacturer": "Sansui", "model": "SR-1050", "match_ready": false }, { "id": "tonearm:1120:sansui-sr-2020", "display_name": "Sansui SR-2020", "manufacturer": "Sansui", "model": "SR-2020", "match_ready": false }, { "id": "tonearm:1121:sansui-sr-2050", "display_name": "Sansui SR-2050", "manufacturer": "Sansui", "model": "SR-2050", "match_ready": false }, { "id": "tonearm:1122:sansui-sr-212", "display_name": "Sansui SR-212", "manufacturer": "Sansui", "model": "SR-212", "match_ready": false }, { "id": "tonearm:1123:sansui-sr-222-mkii", "display_name": "Sansui SR-222 mkII", "manufacturer": "Sansui", "model": "SR-222 mkII", "match_ready": false }, { "id": "tonearm:1124:sansui-sr-222-mkiv", "display_name": "Sansui SR-222 mkIV", "manufacturer": "Sansui", "model": "SR-222 mkIV", "effective_mass_g": 15, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Sansui source search did not locate a primary spec tying Sansui SR-222 mkIV's 15 g effective mass to included/excluded headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "mark_unknown_and_warn_user", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/sansui.shtml" ] } }, { "id": "tonearm:1125:sansui-sr-222-mkv", "display_name": "Sansui SR-222 mkV", "manufacturer": "Sansui", "model": "SR-222 mkV", "match_ready": false }, { "id": "tonearm:1126:sansui-sr-232", "display_name": "Sansui SR-232", "manufacturer": "Sansui", "model": "SR-232", "match_ready": false }, { "id": "tonearm:1127:sansui-sr-3030", "display_name": "Sansui SR-3030", "manufacturer": "Sansui", "model": "SR-3030", "match_ready": false }, { "id": "tonearm:1128:sansui-sr-313", "display_name": "Sansui SR-313", "manufacturer": "Sansui", "model": "SR-313", "match_ready": false }, { "id": "tonearm:1129:sansui-sr-323", "display_name": "Sansui SR-323", "manufacturer": "Sansui", "model": "SR-323", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:1130:sansui-sr-4040", "display_name": "Sansui SR-4040", "manufacturer": "Sansui", "model": "SR-4040", "match_ready": false }, { "id": "tonearm:1131:sansui-sr-4050", "display_name": "Sansui SR-4050", "manufacturer": "Sansui", "model": "SR-4050", "match_ready": false }, { "id": "tonearm:1132:sansui-sr-525", "display_name": "Sansui SR-525", "manufacturer": "Sansui", "model": "SR-525", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:1133:sansui-sr-636", "display_name": "Sansui SR-636", "manufacturer": "Sansui", "model": "SR-636", "match_ready": false }, { "id": "tonearm:1134:sansui-sr-717", "display_name": "Sansui SR-717", "manufacturer": "Sansui", "model": "SR-717", "match_ready": false }, { "id": "tonearm:1135:harman-kardon-hk-720", "display_name": "Harman Kardon HK 720", "manufacturer": "Harman Kardon", "model": "HK 720", "match_ready": false }, { "id": "tonearm:1136:harman-kardon-st5", "display_name": "Harman Kardon ST5", "manufacturer": "Harman Kardon", "model": "ST5", "effective_mass_g": 6, "cartridge_weight_range_g": { "min": 0, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Harman Kardon ST-series/Rabco source identifies a straight-line tracking arm/carriage assembly; treat effective mass as integrated stock arm assembly.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Rabco straight-line tonearm assembly", "source_urls": [ "https://www.vinylengine.com/library/harman-kardon/st7.shtml", "https://archive.org/download/manual_RABCOST7_SM_HARMAN_KARDON_EN/RABCOST7_SM_HARMAN_KARDON_EN_text.pdf" ] } }, { "id": "tonearm:1137:harman-kardon-st6", "display_name": "Harman Kardon ST6", "manufacturer": "Harman Kardon", "model": "ST6", "effective_mass_g": 6, "cartridge_weight_range_g": { "min": 0, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Harman Kardon ST-series/Rabco source identifies a straight-line tracking arm/carriage assembly; treat effective mass as integrated stock arm assembly.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Rabco straight-line tonearm assembly", "source_urls": [ "https://www.vinylengine.com/library/harman-kardon/st7.shtml", "https://archive.org/download/manual_RABCOST7_SM_HARMAN_KARDON_EN/RABCOST7_SM_HARMAN_KARDON_EN_text.pdf" ] } }, { "id": "tonearm:1138:harman-kardon-st7", "display_name": "Harman Kardon ST7", "manufacturer": "Harman Kardon", "model": "ST7", "effective_mass_g": 6, "cartridge_weight_range_g": { "min": 0, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Harman Kardon ST-series/Rabco source identifies a straight-line tracking arm/carriage assembly; treat effective mass as integrated stock arm assembly.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Rabco straight-line tonearm assembly", "source_urls": [ "https://www.vinylengine.com/library/harman-kardon/st7.shtml", "https://archive.org/download/manual_RABCOST7_SM_HARMAN_KARDON_EN/RABCOST7_SM_HARMAN_KARDON_EN_text.pdf" ] } }, { "id": "tonearm:1139:harman-kardon-st8", "display_name": "Harman Kardon ST8", "manufacturer": "Harman Kardon", "model": "ST8", "effective_mass_g": 6, "cartridge_weight_range_g": { "min": 0, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Harman Kardon ST-series/Rabco source identifies a straight-line tracking arm/carriage assembly; treat effective mass as integrated stock arm assembly.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Rabco straight-line tonearm assembly", "source_urls": [ "https://www.vinylengine.com/library/harman-kardon/st7.shtml", "https://archive.org/download/manual_RABCOST7_SM_HARMAN_KARDON_EN/RABCOST7_SM_HARMAN_KARDON_EN_text.pdf" ] } }, { "id": "tonearm:1140:harman-kardon-t20", "display_name": "Harman Kardon T20", "manufacturer": "Harman Kardon", "model": "T20", "match_ready": false }, { "id": "tonearm:1141:harman-kardon-t25", "display_name": "Harman Kardon T25", "manufacturer": "Harman Kardon", "model": "T25", "effective_mass_g": 11, "effective_length_mm": 216, "cartridge_weight_range_g": { "min": 4.5, "max": 7 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Harman Kardon T-series source check did not verify headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/harman-kardon.shtml" ] } }, { "id": "tonearm:1142:harman-kardon-t30", "display_name": "Harman Kardon T30", "manufacturer": "Harman Kardon", "model": "T30", "effective_mass_g": 11, "effective_length_mm": 216, "cartridge_weight_range_g": { "min": 4.5, "max": 7 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Harman Kardon T-series source check did not verify headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/harman-kardon.shtml" ] } }, { "id": "tonearm:1143:harman-kardon-t35", "display_name": "Harman Kardon T35", "manufacturer": "Harman Kardon", "model": "T35", "match_ready": false }, { "id": "tonearm:1144:harman-kardon-t40", "display_name": "Harman Kardon T40", "manufacturer": "Harman Kardon", "model": "T40", "match_ready": false }, { "id": "tonearm:1145:harman-kardon-t45", "display_name": "Harman Kardon T45", "manufacturer": "Harman Kardon", "model": "T45", "effective_mass_g": 8, "effective_length_mm": 216, "cartridge_weight_range_g": { "min": 3, "max": 8 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Harman Kardon T-series source check did not verify headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/harman-kardon.shtml" ] } }, { "id": "tonearm:1146:harman-kardon-t55", "display_name": "Harman Kardon T55", "manufacturer": "Harman Kardon", "model": "T55", "effective_mass_g": 8, "effective_length_mm": 216, "cartridge_weight_range_g": { "min": 3, "max": 8 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Harman Kardon T-series source check did not verify headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/harman-kardon.shtml" ] } }, { "id": "tonearm:1147:harman-kardon-t60", "display_name": "Harman Kardon T60", "manufacturer": "Harman Kardon", "model": "T60", "cartridge_weight_range_g": { "min": 2.5, "max": 8 }, "match_ready": false }, { "id": "tonearm:1148:harman-kardon-t65", "display_name": "Harman Kardon T65", "manufacturer": "Harman Kardon", "model": "T65", "effective_length_mm": 216, "cartridge_weight_range_g": { "min": 4.5, "max": 13 }, "match_ready": false }, { "id": "tonearm:1149:pioneer-pl-41a", "display_name": "Pioneer PL-41A", "manufacturer": "Pioneer", "model": "PL-41A", "match_ready": false }, { "id": "tonearm:1150:pioneer-pl-a35", "display_name": "Pioneer PL-A35", "manufacturer": "Pioneer", "model": "PL-A35", "effective_length_mm": 221, "cartridge_weight_range_g": { "min": 4, "max": 10 }, "match_ready": false }, { "id": "tonearm:1151:pioneer-pu-41a", "display_name": "Pioneer PU-41A", "manufacturer": "Pioneer", "model": "PU-41A", "match_ready": false }, { "id": "tonearm:1152:music-hall-mmf-5", "display_name": "Music Hall MMF-5", "manufacturer": "Music Hall", "model": "MMF-5", "effective_length_mm": 241.3, "match_ready": false }, { "id": "tonearm:1153:micro-seiki-solid-1", "display_name": "Micro Seiki Solid-1", "manufacturer": "Micro Seiki", "model": "Solid-1", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 4.5, "max": 10 }, "match_ready": false }, { "id": "tonearm:1154:micro-seiki-solid-5", "display_name": "Micro Seiki Solid-5", "manufacturer": "Micro Seiki", "model": "Solid-5", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 4, "max": 22 }, "match_ready": false }, { "id": "tonearm:1155:audax-kt-12", "display_name": "Audax KT 12", "manufacturer": "Audax", "model": "KT 12", "effective_length_mm": 235.7, "match_ready": false }, { "id": "tonearm:1156:audax-kt-16", "display_name": "Audax KT 16", "manufacturer": "Audax", "model": "KT 16", "effective_length_mm": 308, "match_ready": false }, { "id": "tonearm:1157:audax-polyphase-12", "display_name": "Audax Polyphase 12\"", "manufacturer": "Audax", "model": "Polyphase 12\"", "match_ready": false }, { "id": "tonearm:1158:audax-polyphase-16", "display_name": "Audax Polyphase 16\"", "manufacturer": "Audax", "model": "Polyphase 16\"", "match_ready": false }, { "id": "tonearm:1159:audax-polyphase-studio", "display_name": "Audax Polyphase Studio", "manufacturer": "Audax", "model": "Polyphase Studio", "match_ready": false }, { "id": "tonearm:1160:audax-pro-12", "display_name": "Audax Pro 12", "manufacturer": "Audax", "model": "Pro 12", "effective_length_mm": 235.7, "match_ready": false }, { "id": "tonearm:1161:audax-pro-16", "display_name": "Audax Pro 16", "manufacturer": "Audax", "model": "Pro 16", "effective_length_mm": 308, "match_ready": false }, { "id": "tonearm:1162:general-electric-baton-a1-500", "display_name": "General Electric Baton A1-500", "manufacturer": "General Electric", "model": "Baton A1-500", "effective_length_mm": 223, "match_ready": false }, { "id": "tonearm:1163:general-electric-baton-a1-501", "display_name": "General Electric Baton A1-501", "manufacturer": "General Electric", "model": "Baton A1-501", "effective_length_mm": 304, "match_ready": false }, { "id": "tonearm:1164:general-electric-tm-2g", "display_name": "General Electric TM-2G", "manufacturer": "General Electric", "model": "TM-2G", "match_ready": false }, { "id": "tonearm:1165:jvc-src-900", "display_name": "JVC SRC-900", "manufacturer": "JVC", "model": "SRC-900", "match_ready": false }, { "id": "tonearm:1166:koetsu-sa-1100d", "display_name": "Koetsu SA-1100D", "manufacturer": "Koetsu", "model": "SA-1100D", "match_ready": false }, { "id": "tonearm:1167:koetsu-sa-1100d-mkii", "display_name": "Koetsu SA-1100D mkII", "manufacturer": "Koetsu", "model": "SA-1100D mkII", "match_ready": false }, { "id": "tonearm:1168:acoustic-solid-solid-edition", "display_name": "Acoustic Solid Solid Edition", "manufacturer": "Acoustic Solid", "model": "Solid Edition", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1169:acoustic-solid-solid-machine", "display_name": "Acoustic Solid Solid Machine", "manufacturer": "Acoustic Solid", "model": "Solid Machine", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1170:acoustic-solid-solid-machine-small", "display_name": "Acoustic Solid Solid Machine Small", "manufacturer": "Acoustic Solid", "model": "Solid Machine Small", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1171:acoustic-solid-solid-machine-small-royal", "display_name": "Acoustic Solid Solid Machine Small Royal", "manufacturer": "Acoustic Solid", "model": "Solid Machine Small Royal", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1172:acoustic-solid-solid-one", "display_name": "Acoustic Solid Solid One", "manufacturer": "Acoustic Solid", "model": "Solid One", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1173:acoustic-solid-solid-one-to-one", "display_name": "Acoustic Solid Solid One to One", "manufacturer": "Acoustic Solid", "model": "Solid One to One", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1174:acoustic-solid-solid-round", "display_name": "Acoustic Solid Solid Round", "manufacturer": "Acoustic Solid", "model": "Solid Round", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1175:acoustic-solid-solid-royal", "display_name": "Acoustic Solid Solid Royal", "manufacturer": "Acoustic Solid", "model": "Solid Royal", "effective_mass_g": 10, "effective_length_mm": 233.75, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 20 }, "match_ready": true }, { "id": "tonearm:1176:acoustic-solid-solid-transparent", "display_name": "Acoustic Solid Solid Transparent", "manufacturer": "Acoustic Solid", "model": "Solid Transparent", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1177:acoustic-solid-solid-wood", "display_name": "Acoustic Solid Solid Wood", "manufacturer": "Acoustic Solid", "model": "Solid Wood", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1178:acoustic-solid-wtb-213l", "display_name": "Acoustic Solid WTB 213L", "manufacturer": "Acoustic Solid", "model": "WTB 213L", "effective_mass_g": 10, "effective_length_mm": 233.75, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 20 }, "match_ready": true }, { "id": "tonearm:1179:acoustic-solid-wtb-313", "display_name": "Acoustic Solid WTB 313", "manufacturer": "Acoustic Solid", "model": "WTB 313", "effective_mass_g": 10, "effective_length_mm": 233.75, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 20 }, "match_ready": true }, { "id": "tonearm:1180:fidelity-research-fr-24", "display_name": "Fidelity Research FR-24", "manufacturer": "Fidelity Research", "model": "FR-24", "effective_length_mm": 245, "match_ready": false }, { "id": "tonearm:1181:fidelity-research-fr-24-mk2", "display_name": "Fidelity Research FR-24 mk2", "manufacturer": "Fidelity Research", "model": "FR-24 mk2", "effective_length_mm": 245, "match_ready": false }, { "id": "tonearm:1182:fidelity-research-fr-34-s", "display_name": "Fidelity Research FR-34 S", "manufacturer": "Fidelity Research", "model": "FR-34 S", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1183:fidelity-research-fr-64-fx", "display_name": "Fidelity Research FR-64 FX", "manufacturer": "Fidelity Research", "model": "FR-64 FX", "effective_mass_g": 20, "effective_length_mm": 245, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Fidelity Research FR-64 family source checked; detachable-headshell context likely, but effective-mass basis remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Fidelity Research detachable headshell family (mass not verified)", "source_urls": [ "https://www.vinylengine.com/library/fidelity-research/fr-64.shtml" ] } }, { "id": "tonearm:1184:fidelity-research-fr-64-s", "display_name": "Fidelity Research FR-64 S", "manufacturer": "Fidelity Research", "model": "FR-64 S", "effective_mass_g": 35, "effective_length_mm": 245, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Fidelity Research FR-64 family source checked; detachable-headshell context likely, but effective-mass basis remains unverified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Fidelity Research detachable headshell family (mass not verified)", "source_urls": [ "https://www.vinylengine.com/library/fidelity-research/fr-64.shtml" ] } }, { "id": "tonearm:1185:fidelity-research-fr-66-fx", "display_name": "Fidelity Research FR-66 FX", "manufacturer": "Fidelity Research", "model": "FR-66 FX", "effective_length_mm": 307, "match_ready": false }, { "id": "tonearm:1186:fidelity-research-fr-66-s", "display_name": "Fidelity Research FR-66 S", "manufacturer": "Fidelity Research", "model": "FR-66 S", "effective_length_mm": 307, "match_ready": false }, { "id": "tonearm:1187:dual-1009", "display_name": "Dual 1009", "manufacturer": "Dual", "model": "1009", "match_ready": false }, { "id": "tonearm:1188:dual-1010", "display_name": "Dual 1010", "manufacturer": "Dual", "model": "1010", "match_ready": false }, { "id": "tonearm:1189:dual-1019", "display_name": "Dual 1019", "manufacturer": "Dual", "model": "1019", "cartridge_weight_range_g": { "min": 0.5, "max": 12.5 }, "match_ready": false }, { "id": "tonearm:1190:dual-1209", "display_name": "Dual 1209", "manufacturer": "Dual", "model": "1209", "cartridge_weight_range_g": { "min": 1, "max": 12 }, "match_ready": false }, { "id": "tonearm:1191:dual-1215", "display_name": "Dual 1215", "manufacturer": "Dual", "model": "1215", "cartridge_weight_range_g": { "min": 1, "max": 8 }, "match_ready": false }, { "id": "tonearm:1192:dual-1219", "display_name": "Dual 1219", "manufacturer": "Dual", "model": "1219", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 1, "max": 12 }, "match_ready": false }, { "id": "tonearm:1193:dual-1228", "display_name": "Dual 1228", "manufacturer": "Dual", "model": "1228", "cartridge_weight_range_g": { "min": 2, "max": 8 }, "match_ready": false }, { "id": "tonearm:1194:dual-1229", "display_name": "Dual 1229", "manufacturer": "Dual", "model": "1229", "cartridge_weight_range_g": { "min": 1, "max": 12 }, "match_ready": false }, { "id": "tonearm:1195:dual-1249", "display_name": "Dual 1249", "manufacturer": "Dual", "model": "1249", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 5.5, "max": 10 }, "match_ready": false }, { "id": "tonearm:1196:dual-1264", "display_name": "Dual 1264", "manufacturer": "Dual", "model": "1264", "effective_length_mm": 221, "match_ready": false }, { "id": "tonearm:1197:dual-295-s", "display_name": "Dual 295 S", "manufacturer": "Dual", "model": "295 S", "match_ready": false }, { "id": "tonearm:1198:dual-430", "display_name": "Dual 430", "manufacturer": "Dual", "model": "430", "match_ready": false }, { "id": "tonearm:1199:dual-461", "display_name": "Dual 461", "manufacturer": "Dual", "model": "461", "match_ready": false }, { "id": "tonearm:1200:dual-496", "display_name": "Dual 496", "manufacturer": "Dual", "model": "496", "match_ready": false }, { "id": "tonearm:1201:dual-504", "display_name": "Dual 504", "manufacturer": "Dual", "model": "504", "effective_length_mm": 221, "match_ready": false }, { "id": "tonearm:1202:dual-521", "display_name": "Dual 521", "manufacturer": "Dual", "model": "521", "effective_length_mm": 221, "cartridge_weight_range_g": { "min": 5.5, "max": 10 }, "match_ready": false }, { "id": "tonearm:1203:dual-601", "display_name": "Dual 601", "manufacturer": "Dual", "model": "601", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": false }, { "id": "tonearm:1204:dual-606", "display_name": "Dual 606", "manufacturer": "Dual", "model": "606", "effective_length_mm": 221, "match_ready": false }, { "id": "tonearm:1205:dual-621", "display_name": "Dual 621", "manufacturer": "Dual", "model": "621", "effective_length_mm": 222, "cartridge_weight_range_g": { "min": 4.5, "max": 10 }, "match_ready": false }, { "id": "tonearm:1206:dual-622", "display_name": "Dual 622", "manufacturer": "Dual", "model": "622", "effective_length_mm": 221, "match_ready": false }, { "id": "tonearm:1207:sony-ps-lx250h", "display_name": "Sony PS-LX250H", "manufacturer": "Sony", "model": "PS-LX250H", "effective_length_mm": 195, "match_ready": false }, { "id": "tonearm:1208:sony-ps-lx285", "display_name": "Sony PS-LX285", "manufacturer": "Sony", "model": "PS-LX285", "match_ready": false }, { "id": "tonearm:1209:sony-ps-lx300h", "display_name": "Sony PS-LX300H", "manufacturer": "Sony", "model": "PS-LX300H", "effective_length_mm": 230, "cartridge_weight_range_g": { "min": 3, "max": 8 }, "match_ready": false }, { "id": "tonearm:1210:sony-ps-lx310", "display_name": "Sony PS-LX310", "manufacturer": "Sony", "model": "PS-LX310", "match_ready": false }, { "id": "tonearm:1211:sony-ps-lx311", "display_name": "Sony PS-LX311", "manufacturer": "Sony", "model": "PS-LX311", "match_ready": false }, { "id": "tonearm:1212:sony-ps-lx330", "display_name": "Sony PS-LX330", "manufacturer": "Sony", "model": "PS-LX330", "match_ready": false }, { "id": "tonearm:1213:sony-ps-lx350h", "display_name": "Sony PS-LX350H", "manufacturer": "Sony", "model": "PS-LX350H", "effective_length_mm": 220, "cartridge_weight_range_g": { "min": 6, "max": 10 }, "match_ready": false }, { "id": "tonearm:1214:sony-ps-lx40", "display_name": "Sony PS-LX40", "manufacturer": "Sony", "model": "PS-LX40", "effective_length_mm": 203, "match_ready": false }, { "id": "tonearm:1215:sony-ps-lx40-p", "display_name": "Sony PS-LX40 P", "manufacturer": "Sony", "model": "PS-LX40 P", "effective_length_mm": 203, "match_ready": false }, { "id": "tonearm:1216:sony-ps-lx43-p", "display_name": "Sony PS-LX43 P", "manufacturer": "Sony", "model": "PS-LX43 P", "effective_length_mm": 203, "match_ready": false }, { "id": "tonearm:1217:sony-ps-lx430", "display_name": "Sony PS-LX430", "manufacturer": "Sony", "model": "PS-LX430", "effective_length_mm": 216.5, "cartridge_weight_range_g": { "min": 6, "max": 6 }, "match_ready": false }, { "id": "tonearm:1218:sony-ps-lx431", "display_name": "Sony PS-LX431", "manufacturer": "Sony", "model": "PS-LX431", "effective_length_mm": 216.5, "cartridge_weight_range_g": { "min": 6, "max": 6 }, "match_ready": false }, { "id": "tonearm:1219:sony-ps-lx431-n", "display_name": "Sony PS-LX431 N", "manufacturer": "Sony", "model": "PS-LX431 N", "effective_length_mm": 216.5, "cartridge_weight_range_g": { "min": 6, "max": 6 }, "match_ready": false }, { "id": "tonearm:1220:sony-ps-lx433", "display_name": "Sony PS-LX433", "manufacturer": "Sony", "model": "PS-LX433", "effective_length_mm": 216.5, "cartridge_weight_range_g": { "min": 6, "max": 6 }, "match_ready": false }, { "id": "tonearm:1221:sony-ps-lx44-p", "display_name": "Sony PS-LX44 P", "manufacturer": "Sony", "model": "PS-LX44 P", "effective_length_mm": 203, "match_ready": false }, { "id": "tonearm:1222:pioneer-pu-41b", "display_name": "Pioneer PU-41B", "manufacturer": "Pioneer", "model": "PU-41B", "match_ready": false }, { "id": "tonearm:1223:neat-ga-12", "display_name": "NEAT GA-12", "manufacturer": "NEAT", "model": "GA-12", "match_ready": false }, { "id": "tonearm:1224:neat-ga-15", "display_name": "NEAT GA-15", "manufacturer": "NEAT", "model": "GA-15", "match_ready": false }, { "id": "tonearm:1225:neat-ga-16", "display_name": "NEAT GA-16", "manufacturer": "NEAT", "model": "GA-16", "match_ready": false }, { "id": "tonearm:1226:linn-akito-mkii", "display_name": "Linn Akito mkII", "manufacturer": "Linn", "model": "Akito mkII", "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1227:linn-basik-lvv", "display_name": "Linn Basik LVV", "manufacturer": "Linn", "model": "Basik LVV", "effective_mass_g": 13.5, "effective_length_mm": 229, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Linn Basik sheet lists effective mass; connector/basis remains unclear and needs model-specific manual confirmation.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Linn/Jelco removable headshell family (mass not verified)", "source_urls": [ "https://docs.linn.co.uk/wiki/images/7/72/Basik_arm_info.PDF", "https://www.vinylengine.com/library/linn/basik-lvv.shtml" ] } }, { "id": "tonearm:1228:linn-basik-lvx-plus", "display_name": "Linn Basik LVX Plus", "manufacturer": "Linn", "model": "Basik LVX Plus", "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1229:linn-ittok-lvii-12", "display_name": "Linn Ittok LVII 12\"", "manufacturer": "Linn", "model": "Ittok LVII 12\"", "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1230:syntec-s-220", "display_name": "Syntec S-220", "manufacturer": "Syntec", "model": "S-220", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:1231:panasonic-pk-448", "display_name": "Panasonic PK-448", "manufacturer": "Panasonic", "model": "PK-448", "match_ready": false }, { "id": "tonearm:1232:panasonic-sl-h302", "display_name": "Panasonic SL-H302", "manufacturer": "Panasonic", "model": "SL-H302", "effective_length_mm": 230, "cartridge_weight_range_g": { "min": 5.5, "max": 17.5 }, "match_ready": false }, { "id": "tonearm:1233:panasonic-sl-h304", "display_name": "Panasonic SL-H304", "manufacturer": "Panasonic", "model": "SL-H304", "effective_length_mm": 230, "cartridge_weight_range_g": { "min": 6, "max": 6 }, "match_ready": false }, { "id": "tonearm:1234:panasonic-sl-h402", "display_name": "Panasonic SL-H402", "manufacturer": "Panasonic", "model": "SL-H402", "effective_length_mm": 230, "cartridge_weight_range_g": { "min": 5, "max": 8 }, "match_ready": false }, { "id": "tonearm:1235:jh-reproducers-audiolab", "display_name": "JH Reproducers Audiolab", "manufacturer": "JH Reproducers", "model": "Audiolab", "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1236:jh-reproducers-formula-4", "display_name": "JH Reproducers Formula 4", "manufacturer": "JH Reproducers", "model": "Formula 4", "effective_mass_g": 4.05, "effective_length_mm": 240, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:1237:keith-monks-laboratory-mercury-arm", "display_name": "Keith Monks Laboratory Mercury Arm", "manufacturer": "Keith Monks", "model": "Laboratory Mercury Arm", "effective_mass_g": 9, "cartridge_weight_range_g": { "min": 4, "max": 6 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "No source found in this pass that explicitly states whether the published 9 g effective mass for Keith Monks Laboratory Mercury Arm includes a headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://korfaudio.com/calculator" ] } }, { "id": "tonearm:1238:keith-monks-m9ba-mkiii", "display_name": "Keith Monks M9BA mkIII", "manufacturer": "Keith Monks", "model": "M9BA mkIII", "effective_length_mm": 228.6, "match_ready": false }, { "id": "tonearm:1239:continuum-audio-cobra", "display_name": "Continuum Audio Cobra", "manufacturer": "Continuum Audio", "model": "Cobra", "match_ready": false }, { "id": "tonearm:1240:continuum-audio-copperhead", "display_name": "Continuum Audio Copperhead", "manufacturer": "Continuum Audio", "model": "Copperhead", "match_ready": false }, { "id": "tonearm:1241:audio-note-an-1s", "display_name": "Audio Note AN-1s", "manufacturer": "Audio Note", "model": "AN-1s", "match_ready": false }, { "id": "tonearm:1242:audio-note-arm-1", "display_name": "Audio Note Arm 1", "manufacturer": "Audio Note", "model": "Arm 1", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1243:audio-note-arm-1-v2", "display_name": "Audio Note Arm 1 v2", "manufacturer": "Audio Note", "model": "Arm 1 v2", "match_ready": false }, { "id": "tonearm:1244:audio-note-arm-2", "display_name": "Audio Note Arm 2", "manufacturer": "Audio Note", "model": "Arm 2", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1245:audio-note-arm-2-v2", "display_name": "Audio Note Arm 2 v2", "manufacturer": "Audio Note", "model": "Arm 2 v2", "match_ready": false }, { "id": "tonearm:1246:audio-note-arm-3-v2", "display_name": "Audio Note Arm 3 v2", "manufacturer": "Audio Note", "model": "Arm 3 v2", "match_ready": false }, { "id": "tonearm:1247:audio-note-reference", "display_name": "Audio Note Reference", "manufacturer": "Audio Note", "model": "Reference", "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 20 }, "match_ready": false }, { "id": "tonearm:1248:rega-acos-planet", "display_name": "Rega Acos Planet", "manufacturer": "Rega", "model": "Acos Planet", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1249:rega-oem-1", "display_name": "Rega OEM 1", "manufacturer": "Rega", "model": "OEM 1", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1250:rega-oem-2", "display_name": "Rega OEM 2", "manufacturer": "Rega", "model": "OEM 2", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1251:rega-p1", "display_name": "Rega P1", "manufacturer": "Rega", "model": "P1", "match_ready": false }, { "id": "tonearm:1252:rega-p2", "display_name": "Rega P2", "manufacturer": "Rega", "model": "P2", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1253:rega-p25", "display_name": "Rega P25", "manufacturer": "Rega", "model": "P25", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1254:rega-p3", "display_name": "Rega P3", "manufacturer": "Rega", "model": "P3", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1255:rega-p3-24", "display_name": "Rega P3-24", "manufacturer": "Rega", "model": "P3-24", "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1256:rega-p5", "display_name": "Rega P5", "manufacturer": "Rega", "model": "P5", "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": false }, { "id": "tonearm:1257:rega-p7", "display_name": "Rega P7", "manufacturer": "Rega", "model": "P7", "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": false }, { "id": "tonearm:1258:rega-p9", "display_name": "Rega P9", "manufacturer": "Rega", "model": "P9", "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1259:rega-p9-mk2", "display_name": "Rega P9 mk2", "manufacturer": "Rega", "model": "P9 mk2", "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1260:rega-planar-2-r200", "display_name": "Rega Planar 2 (R200)", "manufacturer": "Rega", "model": "Planar 2 (R200)", "match_ready": false }, { "id": "tonearm:1261:rega-planar-2-rb250", "display_name": "Rega Planar 2 (RB250)", "manufacturer": "Rega", "model": "Planar 2 (RB250)", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1262:rega-planar-3-r200", "display_name": "Rega Planar 3 (R200)", "manufacturer": "Rega", "model": "Planar 3 (R200)", "match_ready": false }, { "id": "tonearm:1263:rega-planar-3-rb300", "display_name": "Rega Planar 3 (RB300)", "manufacturer": "Rega", "model": "Planar 3 (RB300)", "effective_mass_g": 11.5, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1264:rega-planar-78", "display_name": "Rega Planar 78", "manufacturer": "Rega", "model": "Planar 78", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1265:rega-r200", "display_name": "Rega R200", "manufacturer": "Rega", "model": "R200", "match_ready": false }, { "id": "tonearm:1266:dual-cs-650rc", "display_name": "Dual CS 650RC", "manufacturer": "Dual", "model": "CS 650RC", "effective_length_mm": 221, "match_ready": false }, { "id": "tonearm:1267:belcanto-unipivot-10", "display_name": "Belcanto Unipivot 10\"", "manufacturer": "Belcanto", "model": "Unipivot 10\"", "effective_mass_g": 14, "effective_length_mm": 243, "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Belcanto unipivot source search did not prove basis, but the design is not a removable SME headshell arm; treat as integrated with low confidence.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated unipivot arm/headshell", "source_urls": [ "https://www.vinylengine.com/tonearm_database.php" ] } }, { "id": "tonearm:1268:belcanto-unipivot-12", "display_name": "Belcanto Unipivot 12\"", "manufacturer": "Belcanto", "model": "Unipivot 12\"", "effective_mass_g": 11, "effective_length_mm": 307, "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Belcanto unipivot source search did not prove basis, but the design is not a removable SME headshell arm; treat as integrated with low confidence.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated unipivot arm/headshell", "source_urls": [ "https://www.vinylengine.com/tonearm_database.php" ] } }, { "id": "tonearm:1269:barthe-rotofluid", "display_name": "Barthe Rotofluid", "manufacturer": "Barthe", "model": "Rotofluid", "effective_length_mm": 230, "match_ready": false }, { "id": "tonearm:1270:barthe-rotofluid-pro", "display_name": "Barthe Rotofluid Pro", "manufacturer": "Barthe", "model": "Rotofluid Pro", "effective_length_mm": 230, "match_ready": false }, { "id": "tonearm:1271:philips-7509", "display_name": "Philips 7509", "manufacturer": "Philips", "model": "7509", "effective_length_mm": 213, "match_ready": false }, { "id": "tonearm:1272:philips-ga-202", "display_name": "Philips GA 202", "manufacturer": "Philips", "model": "GA 202", "match_ready": false }, { "id": "tonearm:1273:philips-ga-209", "display_name": "Philips GA 209", "manufacturer": "Philips", "model": "GA 209", "match_ready": false }, { "id": "tonearm:1274:philips-ga-212", "display_name": "Philips GA 212", "manufacturer": "Philips", "model": "GA 212", "match_ready": false }, { "id": "tonearm:1275:philips-ga-312", "display_name": "Philips GA 312", "manufacturer": "Philips", "model": "GA 312", "match_ready": false }, { "id": "tonearm:1276:philips-gc-002", "display_name": "Philips GC 002", "manufacturer": "Philips", "model": "GC 002", "match_ready": false }, { "id": "tonearm:1277:philips-gc-012", "display_name": "Philips GC 012", "manufacturer": "Philips", "model": "GC 012", "match_ready": false }, { "id": "tonearm:1278:philips-gc-209", "display_name": "Philips GC 209", "manufacturer": "Philips", "model": "GC 209", "match_ready": false }, { "id": "tonearm:1279:sonus-formula-iv", "display_name": "Sonus Formula IV", "manufacturer": "Sonus", "model": "Formula IV", "effective_mass_g": 4.05, "effective_length_mm": 240, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-11", "effective_mass_headshell_note": "Sonus Formula IV source check did not verify headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-11", "registry_file": "engrove_headshell_effective_mass_registry_HS-11_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/sonus.shtml" ] } }, { "id": "tonearm:1280:dual-asp-120", "display_name": "Dual ASP 120", "manufacturer": "Dual", "model": "ASP 120", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1281:dual-asp-130", "display_name": "Dual ASP 130", "manufacturer": "Dual", "model": "ASP 130", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1282:dual-asp-135", "display_name": "Dual ASP 135", "manufacturer": "Dual", "model": "ASP 135", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1283:dual-cs-1268", "display_name": "Dual CS 1268", "manufacturer": "Dual", "model": "CS 1268", "effective_length_mm": 221, "match_ready": false }, { "id": "tonearm:1284:dual-cs-138", "display_name": "Dual CS 138", "manufacturer": "Dual", "model": "CS 138", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1285:dual-cs-150q", "display_name": "Dual CS 150Q", "manufacturer": "Dual", "model": "CS 150Q", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1286:dual-cs-410", "display_name": "Dual CS 410", "manufacturer": "Dual", "model": "CS 410", "effective_length_mm": 195, "match_ready": false }, { "id": "tonearm:1287:dual-cs-415", "display_name": "Dual CS 415", "manufacturer": "Dual", "model": "CS 415", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1288:dual-cs-435", "display_name": "Dual CS 435", "manufacturer": "Dual", "model": "CS 435", "match_ready": false }, { "id": "tonearm:1289:dual-cs-455", "display_name": "Dual CS 455", "manufacturer": "Dual", "model": "CS 455", "effective_length_mm": 211, "cartridge_weight_range_g": { "min": 3, "max": 10 }, "match_ready": false }, { "id": "tonearm:1290:dual-cs-5000", "display_name": "Dual CS 5000", "manufacturer": "Dual", "model": "CS 5000", "effective_mass_g": 8.5, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Dual source check did not locate an explicit stock-arm effective-mass headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/dual.shtml" ] } }, { "id": "tonearm:1291:dual-cs-505-1", "display_name": "Dual CS 505 -1", "manufacturer": "Dual", "model": "CS 505 -1", "effective_mass_g": 8.5, "effective_length_mm": 221, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Dual source check did not locate an explicit stock-arm effective-mass headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/dual.shtml" ] } }, { "id": "tonearm:1292:dual-cs-505-2", "display_name": "Dual CS 505 -2", "manufacturer": "Dual", "model": "CS 505 -2", "effective_mass_g": 8.5, "effective_length_mm": 221, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Dual source check did not locate an explicit stock-arm effective-mass headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/dual.shtml" ] } }, { "id": "tonearm:1293:dual-cs-505-3", "display_name": "Dual CS 505 -3", "manufacturer": "Dual", "model": "CS 505 -3", "effective_mass_g": 8.5, "effective_length_mm": 221, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Dual source check did not locate an explicit stock-arm effective-mass headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/dual.shtml" ] } }, { "id": "tonearm:1294:dual-cs-505-4", "display_name": "Dual CS 505 -4", "manufacturer": "Dual", "model": "CS 505 -4", "effective_mass_g": 8.5, "effective_length_mm": 221, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Dual source check did not locate an explicit stock-arm effective-mass headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/dual.shtml" ] } }, { "id": "tonearm:1295:dual-cs-506", "display_name": "Dual CS 506", "manufacturer": "Dual", "model": "CS 506", "effective_length_mm": 221, "cartridge_weight_range_g": { "min": 4.5, "max": 10 }, "match_ready": false }, { "id": "tonearm:1296:dual-cs-511", "display_name": "Dual CS 511", "manufacturer": "Dual", "model": "CS 511", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1297:dual-cs-514", "display_name": "Dual CS 514", "manufacturer": "Dual", "model": "CS 514", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1298:dual-cs-515", "display_name": "Dual CS 515", "manufacturer": "Dual", "model": "CS 515", "effective_length_mm": 211, "match_ready": false }, { "id": "tonearm:1299:thiele-ta01", "display_name": "Thiele TA01", "manufacturer": "Thiele", "model": "TA01", "match_ready": false }, { "id": "tonearm:1300:kyocera-pl-701", "display_name": "Kyocera PL-701", "manufacturer": "Kyocera", "model": "PL-701", "effective_length_mm": 215, "cartridge_weight_range_g": { "min": 3, "max": 10 }, "match_ready": false }, { "id": "tonearm:1301:michell-fluid-arm", "display_name": "Michell Fluid arm", "manufacturer": "Michell", "model": "Fluid arm", "effective_length_mm": 229, "cartridge_weight_range_g": { "min": 4, "max": 16 }, "match_ready": false }, { "id": "tonearm:1302:michell-tecnoarm-a", "display_name": "Michell TecnoArm A", "manufacturer": "Michell", "model": "TecnoArm A", "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 13 }, "match_ready": false }, { "id": "tonearm:1303:mitsubishi-lt-20", "display_name": "Mitsubishi LT-20", "manufacturer": "Mitsubishi", "model": "LT-20", "effective_length_mm": 171, "cartridge_weight_range_g": { "min": 10, "max": 21.5 }, "match_ready": false }, { "id": "tonearm:1304:mitsubishi-lt-5v", "display_name": "Mitsubishi LT-5V", "manufacturer": "Mitsubishi", "model": "LT-5V", "effective_length_mm": 180, "match_ready": false }, { "id": "tonearm:1305:japan-piezo-pu-402", "display_name": "Japan Piezo PU-402", "manufacturer": "Japan Piezo", "model": "PU-402", "effective_length_mm": 220, "match_ready": false }, { "id": "tonearm:1306:clearaudio-clarify", "display_name": "Clearaudio Clarify", "manufacturer": "Clearaudio", "model": "Clarify", "effective_length_mm": 239.25, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2.5, "max": 17 }, "match_ready": false }, { "id": "tonearm:1307:clearaudio-satisfy", "display_name": "Clearaudio Satisfy", "manufacturer": "Clearaudio", "model": "Satisfy", "effective_length_mm": 239.31, "match_ready": false }, { "id": "tonearm:1308:clearaudio-satisfy-carbon-dw", "display_name": "Clearaudio Satisfy Carbon DW", "manufacturer": "Clearaudio", "model": "Satisfy Carbon DW", "effective_length_mm": 239.31, "match_ready": false }, { "id": "tonearm:1309:clearaudio-satisfy-dw", "display_name": "Clearaudio Satisfy DW", "manufacturer": "Clearaudio", "model": "Satisfy DW", "effective_length_mm": 239.31, "match_ready": false }, { "id": "tonearm:1310:clearaudio-satisfy-satine-dw", "display_name": "Clearaudio Satisfy Satine DW", "manufacturer": "Clearaudio", "model": "Satisfy Satine DW", "effective_length_mm": 239.31, "match_ready": false }, { "id": "tonearm:1311:clearaudio-satisfy-kardan", "display_name": "Clearaudio Satisfy Kardan", "manufacturer": "Clearaudio", "model": "Satisfy Kardan", "effective_length_mm": 239.12, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2.5, "max": 17 }, "match_ready": false }, { "id": "tonearm:1312:clearaudio-statement-tt1", "display_name": "Clearaudio Statement TT1", "manufacturer": "Clearaudio", "model": "Statement TT1", "match_ready": false }, { "id": "tonearm:1313:clearaudio-statement-tt1-mi", "display_name": "Clearaudio Statement TT1 MI", "manufacturer": "Clearaudio", "model": "Statement TT1 MI", "match_ready": false }, { "id": "tonearm:1314:clearaudio-tangent", "display_name": "Clearaudio Tangent", "manufacturer": "Clearaudio", "model": "Tangent", "match_ready": false }, { "id": "tonearm:1315:clearaudio-tq1", "display_name": "Clearaudio TQ1", "manufacturer": "Clearaudio", "model": "TQ1", "match_ready": false }, { "id": "tonearm:1316:clearaudio-tq1-master", "display_name": "Clearaudio TQ1 Master", "manufacturer": "Clearaudio", "model": "TQ1 Master", "match_ready": false }, { "id": "tonearm:1317:clearaudio-tt2", "display_name": "Clearaudio TT2", "manufacturer": "Clearaudio", "model": "TT2", "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5.5, "max": 15 }, "match_ready": false }, { "id": "tonearm:1318:clearaudio-tt3", "display_name": "Clearaudio TT3", "manufacturer": "Clearaudio", "model": "TT3", "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5.5, "max": 15 }, "match_ready": false }, { "id": "tonearm:1319:clearaudio-unify-10", "display_name": "Clearaudio Unify 10", "manufacturer": "Clearaudio", "model": "Unify 10", "effective_length_mm": 265.14, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2.5, "max": 17 }, "match_ready": false }, { "id": "tonearm:1320:clearaudio-unify-12", "display_name": "Clearaudio Unify 12", "manufacturer": "Clearaudio", "model": "Unify 12", "effective_mass_g": 12, "effective_length_mm": 316.86, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:1321:clearaudio-unify-14", "display_name": "Clearaudio Unify 14", "manufacturer": "Clearaudio", "model": "Unify 14", "effective_mass_g": 12.7, "effective_length_mm": 338.98, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Clearaudio Unify is a unipivot carbon arm design with integrated/fixed headshell; no separate headshell mass should be added.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Clearaudio Unify arm tube/headshell", "source_urls": [ "https://clearaudio.de/en/products/tonearms-unify.php", "https://www.hifiverse.io/components/vinyl/tonearms/unify-9" ] } }, { "id": "tonearm:1322:clearaudio-unify-9", "display_name": "Clearaudio Unify 9", "manufacturer": "Clearaudio", "model": "Unify 9", "effective_mass_g": 9, "effective_length_mm": 239.31, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "Clearaudio Unify is a unipivot carbon arm design with integrated/fixed headshell; no separate headshell mass should be added.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Clearaudio Unify arm tube/headshell", "source_urls": [ "https://clearaudio.de/en/products/tonearms-unify.php", "https://www.hifiverse.io/components/vinyl/tonearms/unify-9" ] } }, { "id": "tonearm:1323:audioquest-pt5", "display_name": "Audioquest PT5", "manufacturer": "Audioquest", "model": "PT5", "match_ready": false }, { "id": "tonearm:1324:audioquest-pt6", "display_name": "Audioquest PT6", "manufacturer": "Audioquest", "model": "PT6", "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1325:audioquest-pt7", "display_name": "Audioquest PT7", "manufacturer": "Audioquest", "model": "PT7", "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1326:audioquest-pt8", "display_name": "Audioquest PT8", "manufacturer": "Audioquest", "model": "PT8", "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1327:audioquest-pt9", "display_name": "Audioquest PT9", "manufacturer": "Audioquest", "model": "PT9", "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1328:audioquest-pt9-extreme", "display_name": "Audioquest PT9 Extreme", "manufacturer": "Audioquest", "model": "PT9 Extreme", "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1329:audioquest-pt9-plus", "display_name": "Audioquest PT9 Plus", "manufacturer": "Audioquest", "model": "PT9 Plus", "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1330:clearaudio-verify", "display_name": "Clearaudio Verify", "manufacturer": "Clearaudio", "model": "Verify", "effective_length_mm": 239.56, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2.5, "max": 17 }, "match_ready": false }, { "id": "tonearm:1331:helius-aureus-mkii", "display_name": "Helius Aureus mkII", "manufacturer": "Helius", "model": "Aureus mkII", "effective_length_mm": 228.6, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 15 }, "match_ready": false }, { "id": "tonearm:1332:helius-cyalene", "display_name": "Helius Cyalene", "manufacturer": "Helius", "model": "Cyalene", "effective_length_mm": 255, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 20 }, "match_ready": false }, { "id": "tonearm:1333:helius-cyalene-mkii", "display_name": "Helius Cyalene mkII", "manufacturer": "Helius", "model": "Cyalene mkII", "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1334:helius-helius", "display_name": "Helius Helius", "manufacturer": "Helius", "model": "Helius", "effective_mass_g": 12, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Helius source check did not verify effective-mass headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/helius.shtml" ] } }, { "id": "tonearm:1335:helius-orion", "display_name": "Helius Orion", "manufacturer": "Helius", "model": "Orion", "effective_mass_g": 11, "effective_length_mm": 252, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 20 }, "match_ready": true }, { "id": "tonearm:1336:helius-orion-mkii", "display_name": "Helius Orion mkII", "manufacturer": "Helius", "model": "Orion mkII", "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1337:helius-scorpio-mkii", "display_name": "Helius Scorpio mkII", "manufacturer": "Helius", "model": "Scorpio mkII", "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1338:helius-scorpio-mkiii", "display_name": "Helius Scorpio mkIII", "manufacturer": "Helius", "model": "Scorpio mkIII", "effective_length_mm": 228.6, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": false }, { "id": "tonearm:1339:connoisseur-sau-1", "display_name": "Connoisseur SAU 1", "manufacturer": "Connoisseur", "model": "SAU 1", "match_ready": false }, { "id": "tonearm:1340:connoisseur-sau-2", "display_name": "Connoisseur SAU 2", "manufacturer": "Connoisseur", "model": "SAU 2", "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1341:connoisseur-sau-4", "display_name": "Connoisseur SAU 4", "manufacturer": "Connoisseur", "model": "SAU 4", "match_ready": false }, { "id": "tonearm:1342:qed-r232-e", "display_name": "QED R232 E", "manufacturer": "QED", "model": "R232 E", "effective_mass_g": 12, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:1343:telefunken-musikus-105-v", "display_name": "Telefunken Musikus 105 V", "manufacturer": "Telefunken", "model": "Musikus 105 V", "match_ready": false }, { "id": "tonearm:1344:telefunken-s-500-hifi", "display_name": "Telefunken S 500 HiFi", "manufacturer": "Telefunken", "model": "S 500 HiFi", "match_ready": false }, { "id": "tonearm:1345:telefunken-s-600-hifi", "display_name": "Telefunken S 600 HiFi", "manufacturer": "Telefunken", "model": "S 600 HiFi", "match_ready": false }, { "id": "tonearm:1346:telefunken-s-900-hifi", "display_name": "Telefunken S 900 HiFi", "manufacturer": "Telefunken", "model": "S 900 HiFi", "effective_length_mm": 227.1, "match_ready": false }, { "id": "tonearm:1347:telefunken-ts-850-hifi", "display_name": "Telefunken TS 850 HiFi", "manufacturer": "Telefunken", "model": "TS 850 HiFi", "match_ready": false }, { "id": "tonearm:1348:telefunken-ts-860-hifi", "display_name": "Telefunken TS 860 HiFi", "manufacturer": "Telefunken", "model": "TS 860 HiFi", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1349:telefunken-tw-501", "display_name": "Telefunken TW 501", "manufacturer": "Telefunken", "model": "TW 501", "match_ready": false }, { "id": "tonearm:1350:telefunken-tw-561", "display_name": "Telefunken TW 561", "manufacturer": "Telefunken", "model": "TW 561", "match_ready": false }, { "id": "tonearm:1351:telefunken-w-230-hifi", "display_name": "Telefunken W 230 HiFi", "manufacturer": "Telefunken", "model": "W 230 HiFi", "match_ready": false }, { "id": "tonearm:1352:empire-698-arm", "display_name": "Empire 698 Arm", "manufacturer": "Empire", "model": "698 Arm", "effective_length_mm": 228.6, "match_ready": false }, { "id": "tonearm:1353:empire-990", "display_name": "Empire 990", "manufacturer": "Empire", "model": "990", "effective_length_mm": 228.6, "match_ready": false }, { "id": "tonearm:1354:tiger-paw-javelin", "display_name": "Tiger-Paw Javelin", "manufacturer": "Tiger-Paw", "model": "Javelin", "match_ready": false }, { "id": "tonearm:1355:tokyo-sound-a-12", "display_name": "Tokyo Sound A-12", "manufacturer": "Tokyo Sound", "model": "A-12", "match_ready": false }, { "id": "tonearm:1356:tokyo-sound-a-16", "display_name": "Tokyo Sound A-16", "manufacturer": "Tokyo Sound", "model": "A-16", "match_ready": false }, { "id": "tonearm:1357:transcriptors-fluid", "display_name": "Transcriptors Fluid", "manufacturer": "Transcriptors", "model": "Fluid", "match_ready": false }, { "id": "tonearm:1358:transcriptors-vestigial", "display_name": "Transcriptors Vestigial", "manufacturer": "Transcriptors", "model": "Vestigial", "effective_length_mm": 222, "match_ready": false }, { "id": "tonearm:1359:teac-ta-11", "display_name": "Teac TA-11", "manufacturer": "Teac", "model": "TA-11", "match_ready": false }, { "id": "tonearm:1360:teac-ta-15", "display_name": "Teac TA-15", "manufacturer": "Teac", "model": "TA-15", "match_ready": false }, { "id": "tonearm:1361:souther-linear", "display_name": "Souther Linear", "manufacturer": "Souther", "model": "Linear", "cartridge_weight_range_g": { "min": 4, "max": 20 }, "match_ready": false }, { "id": "tonearm:1362:grace-g-1040", "display_name": "Grace G-1040", "manufacturer": "Grace", "model": "G-1040", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1363:grace-g-240", "display_name": "Grace G-240", "manufacturer": "Grace", "model": "G-240", "effective_length_mm": 256, "match_ready": false }, { "id": "tonearm:1364:grace-g-320", "display_name": "Grace G-320", "manufacturer": "Grace", "model": "G-320", "match_ready": false }, { "id": "tonearm:1365:grace-g-340", "display_name": "Grace G-340", "manufacturer": "Grace", "model": "G-340", "match_ready": false }, { "id": "tonearm:1366:grace-g-360", "display_name": "Grace G-360", "manufacturer": "Grace", "model": "G-360", "match_ready": false }, { "id": "tonearm:1367:grace-g-380", "display_name": "Grace G-380", "manufacturer": "Grace", "model": "G-380", "match_ready": false }, { "id": "tonearm:1368:grace-g-520l", "display_name": "Grace G-520L", "manufacturer": "Grace", "model": "G-520L", "effective_length_mm": 222, "match_ready": false }, { "id": "tonearm:1369:grace-g-540l", "display_name": "Grace G-540L", "manufacturer": "Grace", "model": "G-540L", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1370:grace-g-560l", "display_name": "Grace G-560L", "manufacturer": "Grace", "model": "G-560L", "effective_length_mm": 285, "match_ready": false }, { "id": "tonearm:1371:grace-g-660p", "display_name": "Grace G-660P", "manufacturer": "Grace", "model": "G-660P", "effective_length_mm": 285, "match_ready": false }, { "id": "tonearm:1372:grace-g-707-mkii", "display_name": "Grace G-707 mkII", "manufacturer": "Grace", "model": "G-707 mkII", "effective_mass_g": 7, "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4.5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Grace G-707 mkII source check did not verify headshell/effective-mass basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/grace/g-707.shtml" ] } }, { "id": "tonearm:1373:grace-sigma-709f", "display_name": "Grace Sigma-709F", "manufacturer": "Grace", "model": "Sigma-709F", "match_ready": false }, { "id": "tonearm:1374:esoteric-ta-9d", "display_name": "Esoteric TA-9D", "manufacturer": "Esoteric", "model": "TA-9D", "match_ready": false }, { "id": "tonearm:1375:castagna-model-a", "display_name": "Castagna Model A", "manufacturer": "Castagna", "model": "Model A", "match_ready": false }, { "id": "tonearm:1376:stax-ua-227", "display_name": "Stax UA-227", "manufacturer": "Stax", "model": "UA-227", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:1377:stax-ua-3-n", "display_name": "Stax UA-3 N", "manufacturer": "Stax", "model": "UA-3 N", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:1378:stax-ua-3-nl", "display_name": "Stax UA-3 NL", "manufacturer": "Stax", "model": "UA-3 NL", "effective_length_mm": 312, "match_ready": false }, { "id": "tonearm:1379:stax-ua-7-cf-n", "display_name": "Stax UA-7 cf N", "manufacturer": "Stax", "model": "UA-7 cf N", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:1380:stax-ua-7-n", "display_name": "Stax UA-7 N", "manufacturer": "Stax", "model": "UA-7 N", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:1381:stax-ua-70-n", "display_name": "Stax UA-70 N", "manufacturer": "Stax", "model": "UA-70 N", "effective_length_mm": 312, "match_ready": false }, { "id": "tonearm:1382:stax-ua-9-n", "display_name": "Stax UA-9 N", "manufacturer": "Stax", "model": "UA-9 N", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:1383:stax-ua-90-n", "display_name": "Stax UA-90 N", "manufacturer": "Stax", "model": "UA-90 N", "effective_length_mm": 312, "match_ready": false }, { "id": "tonearm:1384:roksan-artemiz-mk2", "display_name": "Roksan Artemiz mk2", "manufacturer": "Roksan", "model": "Artemiz mk2", "effective_mass_g": 9, "effective_length_mm": 240, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 18 }, "match_ready": true }, { "id": "tonearm:1385:roksan-tabriz-zi", "display_name": "Roksan Tabriz Zi", "manufacturer": "Roksan", "model": "Tabriz Zi", "effective_mass_g": 9, "effective_length_mm": 240, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 18 }, "match_ready": true }, { "id": "tonearm:1386:de-baer-onyx", "display_name": "De Baer Onyx", "manufacturer": "De Baer", "model": "Onyx", "match_ready": false }, { "id": "tonearm:1387:uher-classic-utt-222", "display_name": "Uher Classic UTT 222", "manufacturer": "Uher", "model": "Classic UTT 222", "match_ready": false }, { "id": "tonearm:1388:emt-rma-229", "display_name": "EMT RMA 229", "manufacturer": "EMT", "model": "RMA 229", "effective_mass_g": 35, "effective_length_mm": 244, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-09", "effective_mass_headshell_note": "EMT source check did not verify RMA 229 effective-mass headshell basis.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-09", "registry_file": "engrove_headshell_effective_mass_registry_HS-09_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.vinylengine.com/library/emt.shtml" ] } }, { "id": "tonearm:1389:emt-rma-297", "display_name": "EMT RMA 297", "manufacturer": "EMT", "model": "RMA 297", "effective_length_mm": 309, "match_ready": false }, { "id": "tonearm:1390:syrinx-le-1", "display_name": "Syrinx LE 1", "manufacturer": "Syrinx", "model": "LE 1", "match_ready": false }, { "id": "tonearm:1391:syrinx-le2", "display_name": "Syrinx LE2", "manufacturer": "Syrinx", "model": "LE2", "effective_length_mm": 229, "match_ready": false }, { "id": "tonearm:1392:syrinx-pu2-g", "display_name": "Syrinx PU2 G", "manufacturer": "Syrinx", "model": "PU2 G", "effective_length_mm": 228, "match_ready": false }, { "id": "tonearm:1393:syrinx-pu3-b", "display_name": "Syrinx PU3 B", "manufacturer": "Syrinx", "model": "PU3 B", "effective_length_mm": 228, "match_ready": false }, { "id": "tonearm:1394:syrinx-pu4", "display_name": "Syrinx PU4", "manufacturer": "Syrinx", "model": "PU4", "effective_length_mm": 229, "match_ready": false }, { "id": "tonearm:1395:marantz-6025-ct", "display_name": "Marantz 6025 CT", "manufacturer": "Marantz", "model": "6025 CT", "match_ready": false }, { "id": "tonearm:1396:marantz-6100", "display_name": "Marantz 6100", "manufacturer": "Marantz", "model": "6100", "effective_length_mm": 213, "match_ready": false }, { "id": "tonearm:1397:marantz-6170", "display_name": "Marantz 6170", "manufacturer": "Marantz", "model": "6170", "effective_length_mm": 215, "match_ready": false }, { "id": "tonearm:1398:marantz-6200", "display_name": "Marantz 6200", "manufacturer": "Marantz", "model": "6200", "effective_length_mm": 213, "match_ready": false }, { "id": "tonearm:1399:marantz-6300", "display_name": "Marantz 6300", "manufacturer": "Marantz", "model": "6300", "match_ready": false }, { "id": "tonearm:1400:marantz-6350", "display_name": "Marantz 6350", "manufacturer": "Marantz", "model": "6350", "match_ready": false }, { "id": "tonearm:1401:marantz-6370q", "display_name": "Marantz 6370Q", "manufacturer": "Marantz", "model": "6370Q", "match_ready": false }, { "id": "tonearm:1402:marantz-slt-12", "display_name": "Marantz SLT-12", "manufacturer": "Marantz", "model": "SLT-12", "match_ready": false }, { "id": "tonearm:1403:marantz-tt-15s1", "display_name": "Marantz TT-15S1", "manufacturer": "Marantz", "model": "TT-15S1", "effective_length_mm": 239, "cartridge_weight_range_g": { "min": 18, "max": 33 }, "match_ready": false }, { "id": "tonearm:1404:marantz-tt1000", "display_name": "Marantz TT1000", "manufacturer": "Marantz", "model": "TT1000", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1405:marantz-tt1200-ct", "display_name": "Marantz TT1200 CT", "manufacturer": "Marantz", "model": "TT1200 CT", "match_ready": false }, { "id": "tonearm:1406:marantz-tt2000", "display_name": "Marantz TT2000", "manufacturer": "Marantz", "model": "TT2000", "effective_length_mm": 216, "match_ready": false }, { "id": "tonearm:1407:marantz-tt2200-ct", "display_name": "Marantz TT2200 CT", "manufacturer": "Marantz", "model": "TT2200 CT", "match_ready": false }, { "id": "tonearm:1408:marantz-tt4000", "display_name": "Marantz TT4000", "manufacturer": "Marantz", "model": "TT4000", "effective_length_mm": 216, "match_ready": false }, { "id": "tonearm:1409:marantz-tt4200-ct", "display_name": "Marantz TT4200 CT", "manufacturer": "Marantz", "model": "TT4200 CT", "match_ready": false }, { "id": "tonearm:1410:marantz-tt6000", "display_name": "Marantz TT6000", "manufacturer": "Marantz", "model": "TT6000", "match_ready": false }, { "id": "tonearm:1411:marantz-tt6200-ct", "display_name": "Marantz TT6200 CT", "manufacturer": "Marantz", "model": "TT6200 CT", "match_ready": false }, { "id": "tonearm:1412:marantz-tt8001", "display_name": "Marantz TT8001", "manufacturer": "Marantz", "model": "TT8001", "effective_length_mm": 230, "match_ready": false }, { "id": "tonearm:1413:perpetuum-ebner-pe-3015", "display_name": "Perpetuum-Ebner PE 3015", "manufacturer": "Perpetuum-Ebner", "model": "PE 3015", "cartridge_weight_range_g": { "min": 2, "max": 10 }, "match_ready": false }, { "id": "tonearm:1414:eminent-technology-et2", "display_name": "Eminent Technology ET2", "manufacturer": "Eminent Technology", "model": "ET2", "effective_length_mm": 187.33, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 0, "max": 15 }, "match_ready": false }, { "id": "tonearm:1415:eminent-technology-et2-5", "display_name": "Eminent Technology ET2.5", "manufacturer": "Eminent Technology", "model": "ET2.5", "effective_length_mm": 187.33, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 0, "max": 15 }, "match_ready": false }, { "id": "tonearm:1416:satin-ar-1", "display_name": "Satin AR-1", "manufacturer": "Satin", "model": "AR-1", "effective_length_mm": 250.5, "match_ready": false }, { "id": "tonearm:1417:satin-ar-1-m", "display_name": "Satin AR-1 M", "manufacturer": "Satin", "model": "AR-1 M", "effective_length_mm": 250.5, "match_ready": false }, { "id": "tonearm:1418:satin-ar-1-s", "display_name": "Satin AR-1 S", "manufacturer": "Satin", "model": "AR-1 S", "effective_length_mm": 250.5, "match_ready": false }, { "id": "tonearm:1419:rotel-rp1000", "display_name": "Rotel RP1000", "manufacturer": "Rotel", "model": "RP1000", "match_ready": false }, { "id": "tonearm:1420:rotel-rp1000q", "display_name": "Rotel RP1000Q", "manufacturer": "Rotel", "model": "RP1000Q", "cartridge_weight_range_g": { "min": 4, "max": 8 }, "match_ready": false }, { "id": "tonearm:1421:rotel-rp1001", "display_name": "Rotel RP1001", "manufacturer": "Rotel", "model": "RP1001", "match_ready": false }, { "id": "tonearm:1422:rotel-rp1010", "display_name": "Rotel RP1010", "manufacturer": "Rotel", "model": "RP1010", "match_ready": false }, { "id": "tonearm:1423:rotel-rp400", "display_name": "Rotel RP400", "manufacturer": "Rotel", "model": "RP400", "match_ready": false }, { "id": "tonearm:1424:rotel-rp700", "display_name": "Rotel RP700", "manufacturer": "Rotel", "model": "RP700", "cartridge_weight_range_g": { "min": 2.5, "max": 11 }, "match_ready": false }, { "id": "tonearm:1425:rotel-rp820", "display_name": "Rotel RP820", "manufacturer": "Rotel", "model": "RP820", "match_ready": false }, { "id": "tonearm:1426:rotel-rp830", "display_name": "Rotel RP830", "manufacturer": "Rotel", "model": "RP830", "match_ready": false }, { "id": "tonearm:1427:rotel-rp840", "display_name": "Rotel RP840", "manufacturer": "Rotel", "model": "RP840", "match_ready": false }, { "id": "tonearm:1428:rotel-rp850", "display_name": "Rotel RP850", "manufacturer": "Rotel", "model": "RP850", "match_ready": false }, { "id": "tonearm:1429:rotel-rp855", "display_name": "Rotel RP855", "manufacturer": "Rotel", "model": "RP855", "match_ready": false }, { "id": "tonearm:1430:rotel-rp860", "display_name": "Rotel RP860", "manufacturer": "Rotel", "model": "RP860", "match_ready": false }, { "id": "tonearm:1431:rotel-rp900", "display_name": "Rotel RP900", "manufacturer": "Rotel", "model": "RP900", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1432:rotel-rp955", "display_name": "Rotel RP955", "manufacturer": "Rotel", "model": "RP955", "match_ready": false }, { "id": "tonearm:1433:kiseki-gold", "display_name": "Kiseki Gold", "manufacturer": "Kiseki", "model": "Gold", "match_ready": false }, { "id": "tonearm:1434:wheaton-tri-planar-iii", "display_name": "Wheaton Tri-Planar III", "manufacturer": "Wheaton", "model": "Tri-Planar III", "effective_length_mm": 250, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1435:wheaton-tri-planar-iv", "display_name": "Wheaton Tri-Planar IV", "manufacturer": "Wheaton", "model": "Tri-Planar IV", "effective_length_mm": 250, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1436:wheaton-tri-planar-vi", "display_name": "Wheaton Tri-Planar VI", "manufacturer": "Wheaton", "model": "Tri-Planar VI", "effective_length_mm": 250, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1437:wheaton-tri-planar-vii", "display_name": "Wheaton Tri-Planar VII", "manufacturer": "Wheaton", "model": "Tri-Planar VII", "effective_mass_g": 11, "effective_length_mm": 250, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:1438:j-sikora-kv12", "display_name": "J Sikora KV12", "manufacturer": "J Sikora", "model": "KV12", "match_ready": false }, { "id": "tonearm:1439:argonne-ar-600s", "display_name": "Argonne AR-600S", "manufacturer": "Argonne", "model": "AR-600S", "match_ready": false }, { "id": "tonearm:1440:argonne-ga-4", "display_name": "Argonne GA-4", "manufacturer": "Argonne", "model": "GA-4", "match_ready": false }, { "id": "tonearm:1441:systemdek-profile", "display_name": "Systemdek Profile", "manufacturer": "Systemdek", "model": "Profile", "match_ready": false }, { "id": "tonearm:1442:systemdek-profile-iii", "display_name": "Systemdek Profile III", "manufacturer": "Systemdek", "model": "Profile III", "match_ready": false }, { "id": "tonearm:1443:signet-xk35", "display_name": "Signet XK35", "manufacturer": "Signet", "model": "XK35", "effective_mass_g": 5, "effective_length_mm": 240, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 2, "max": 9 }, "match_ready": true }, { "id": "tonearm:1444:alphason-designs-delta", "display_name": "Alphason Designs Delta", "manufacturer": "Alphason Designs", "model": "Delta", "effective_mass_g": 15, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 20 }, "match_ready": true }, { "id": "tonearm:1445:alphason-designs-hr100s", "display_name": "Alphason Designs HR100S", "manufacturer": "Alphason Designs", "model": "HR100S", "effective_mass_g": 11, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 20 }, "match_ready": true }, { "id": "tonearm:1446:alphason-designs-hr100s-mcs", "display_name": "Alphason Designs HR100S MCS", "manufacturer": "Alphason Designs", "model": "HR100S MCS", "effective_mass_g": 11, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 20 }, "match_ready": true }, { "id": "tonearm:1447:alphason-designs-hr200s", "display_name": "Alphason Designs HR200S", "manufacturer": "Alphason Designs", "model": "HR200S", "match_ready": false }, { "id": "tonearm:1448:alphason-designs-opal", "display_name": "Alphason Designs Opal", "manufacturer": "Alphason Designs", "model": "Opal", "effective_mass_g": 13, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 20 }, "match_ready": true }, { "id": "tonearm:1449:alphason-designs-xenon", "display_name": "Alphason Designs Xenon", "manufacturer": "Alphason Designs", "model": "Xenon", "effective_mass_g": 13, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 20 }, "match_ready": true }, { "id": "tonearm:1450:alphason-designs-xenon-mcs", "display_name": "Alphason Designs Xenon MCS", "manufacturer": "Alphason Designs", "model": "Xenon MCS", "effective_mass_g": 13, "effective_length_mm": 229, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 3, "max": 20 }, "match_ready": true }, { "id": "tonearm:1451:teksonor-professional-tonearm", "display_name": "Teksonor Professional Tonearm", "manufacturer": "Teksonor", "model": "Professional Tonearm", "match_ready": false }, { "id": "tonearm:1452:sound-st-14", "display_name": "Sound ST 14", "manufacturer": "Sound", "model": "ST 14", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1453:bluenote-b5", "display_name": "Bluenote B5", "manufacturer": "Bluenote", "model": "B5", "effective_length_mm": 233, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1454:bluenote-b7", "display_name": "Bluenote B7", "manufacturer": "Bluenote", "model": "B7", "match_ready": false }, { "id": "tonearm:1455:bluenote-bellaria", "display_name": "Bluenote Bellaria", "manufacturer": "Bluenote", "model": "Bellaria", "match_ready": false }, { "id": "tonearm:1456:bluenote-betania", "display_name": "Bluenote Betania", "manufacturer": "Bluenote", "model": "Betania", "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1457:bluenote-borghese", "display_name": "Bluenote Borghese", "manufacturer": "Bluenote", "model": "Borghese", "effective_length_mm": 233, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1458:bluenote-borromeo", "display_name": "Bluenote Borromeo", "manufacturer": "Bluenote", "model": "Borromeo", "effective_length_mm": 233, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1459:bluenote-u3", "display_name": "Bluenote U3", "manufacturer": "Bluenote", "model": "U3", "effective_length_mm": 233, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1460:reed-1h", "display_name": "Reed 1H", "manufacturer": "Reed", "model": "1H", "match_ready": false }, { "id": "tonearm:1461:reed-2a", "display_name": "Reed 2A", "manufacturer": "Reed", "model": "2A", "match_ready": false }, { "id": "tonearm:1462:reed-3q", "display_name": "Reed 3Q", "manufacturer": "Reed", "model": "3Q", "match_ready": false }, { "id": "tonearm:1463:ion-audio-ipt01", "display_name": "ION Audio iPT01", "manufacturer": "ION Audio", "model": "iPT01", "match_ready": false }, { "id": "tonearm:1464:ion-audio-itt03x", "display_name": "ION Audio iTT03X", "manufacturer": "ION Audio", "model": "iTT03X", "match_ready": false }, { "id": "tonearm:1465:ion-audio-ittusb", "display_name": "ION Audio iTTUSB", "manufacturer": "ION Audio", "model": "iTTUSB", "match_ready": false }, { "id": "tonearm:1466:strathearn-sma2", "display_name": "Strathearn SMA2", "manufacturer": "Strathearn", "model": "SMA2", "match_ready": false }, { "id": "tonearm:1467:supex-6140", "display_name": "Supex 6140", "manufacturer": "Supex", "model": "6140", "effective_length_mm": 245, "match_ready": false }, { "id": "tonearm:1468:ikeda-it-245", "display_name": "Ikeda IT-245", "manufacturer": "Ikeda", "model": "IT-245", "effective_length_mm": 245, "match_ready": false }, { "id": "tonearm:1469:koshin-801-gs", "display_name": "Koshin 801 GS", "manufacturer": "Koshin", "model": "801 GS", "effective_length_mm": 240, "match_ready": false }, { "id": "tonearm:1470:grace-g-860f-b", "display_name": "Grace G-860F B", "manufacturer": "Grace", "model": "G-860F B", "effective_length_mm": 285, "match_ready": false }, { "id": "tonearm:1471:moerch-dp6-blue", "display_name": "Moerch DP6 (blue)", "manufacturer": "Moerch", "model": "DP6 (blue)", "effective_mass_g": 13.1, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Mørch specifications explicitly state effective mass of the complete tonearm with arm tube by color; no separate headshell mass is needed.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "Mørch blue arm tube", "source_urls": [ "https://www.moerch.dk/spec1.htm", "https://sorasound.com/products/moerch/technical-specifications-moerch-dp-6dp-8up-4/" ] } }, { "id": "tonearm:1472:moerch-dp6-green", "display_name": "Moerch DP6 (green)", "manufacturer": "Moerch", "model": "DP6 (green)", "effective_mass_g": 3.8, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:1473:moerch-dp6-red", "display_name": "Moerch DP6 (red)", "manufacturer": "Moerch", "model": "DP6 (red)", "effective_mass_g": 5.7, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Mørch specifications explicitly state effective mass of the complete tonearm with arm tube by color; no separate headshell mass is needed.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "Mørch red arm tube", "source_urls": [ "https://www.moerch.dk/spec1.htm", "https://sorasound.com/products/moerch/technical-specifications-moerch-dp-6dp-8up-4/" ] } }, { "id": "tonearm:1474:moerch-dp6-yellow", "display_name": "Moerch DP6 (yellow)", "manufacturer": "Moerch", "model": "DP6 (yellow)", "effective_mass_g": 7.4, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Mørch specifications explicitly state effective mass of the complete tonearm with arm tube by color; no separate headshell mass is needed.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "Mørch yellow arm tube", "source_urls": [ "https://www.moerch.dk/spec1.htm", "https://sorasound.com/products/moerch/technical-specifications-moerch-dp-6dp-8up-4/" ] } }, { "id": "tonearm:1475:moerch-dp6-12-armtube", "display_name": "Moerch DP6 12\" armtube", "manufacturer": "Moerch", "model": "DP6 12\" armtube", "effective_length_mm": 307.4, "match_ready": false }, { "id": "tonearm:1476:moerch-dp8", "display_name": "Moerch DP8", "manufacturer": "Moerch", "model": "DP8", "match_ready": false }, { "id": "tonearm:1477:moerch-up4-blue", "display_name": "Moerch UP4 (blue)", "manufacturer": "Moerch", "model": "UP4 (blue)", "effective_mass_g": 13.1, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Mørch specifications explicitly state effective mass of the complete tonearm with arm tube by color; no separate headshell mass is needed.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "Mørch blue arm tube", "source_urls": [ "https://www.moerch.dk/spec1.htm", "https://sorasound.com/products/moerch/technical-specifications-moerch-dp-6dp-8up-4/" ] } }, { "id": "tonearm:1478:moerch-up4-green", "display_name": "Moerch UP4 (green)", "manufacturer": "Moerch", "model": "UP4 (green)", "effective_mass_g": 3.8, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Mørch specifications explicitly state effective mass of the complete tonearm with arm tube by color; no separate headshell mass is needed.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "Mørch green arm tube", "source_urls": [ "https://www.moerch.dk/spec1.htm", "https://sorasound.com/products/moerch/technical-specifications-moerch-dp-6dp-8up-4/" ] } }, { "id": "tonearm:1479:moerch-up4-red", "display_name": "Moerch UP4 (red)", "manufacturer": "Moerch", "model": "UP4 (red)", "effective_mass_g": 5.7, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Mørch specifications explicitly state effective mass of the complete tonearm with arm tube by color; no separate headshell mass is needed.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "Mørch red arm tube", "source_urls": [ "https://www.moerch.dk/spec1.htm", "https://sorasound.com/products/moerch/technical-specifications-moerch-dp-6dp-8up-4/" ] } }, { "id": "tonearm:1480:moerch-up4-yellow", "display_name": "Moerch UP4 (yellow)", "manufacturer": "Moerch", "model": "UP4 (yellow)", "effective_mass_g": 7.4, "effective_length_mm": 230, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Mørch specifications explicitly state effective mass of the complete tonearm with arm tube by color; no separate headshell mass is needed.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "Mørch yellow arm tube", "source_urls": [ "https://www.moerch.dk/spec1.htm", "https://sorasound.com/products/moerch/technical-specifications-moerch-dp-6dp-8up-4/" ] } }, { "id": "tonearm:1481:moerch-up4-12", "display_name": "Moerch UP4 12\"", "manufacturer": "Moerch", "model": "UP4 12\"", "effective_length_mm": 307.4, "match_ready": false }, { "id": "tonearm:1482:nad-510-flat-arm", "display_name": "NAD 510 (flat arm)", "manufacturer": "NAD", "model": "510 (flat arm)", "effective_length_mm": 208, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1483:nad-5120-straight-arm", "display_name": "NAD 5120 (straight arm)", "manufacturer": "NAD", "model": "5120 (straight arm)", "effective_length_mm": 208, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1484:nad-533", "display_name": "NAD 533", "manufacturer": "NAD", "model": "533", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1485:nad-c-555", "display_name": "NAD C 555", "manufacturer": "NAD", "model": "C 555", "effective_mass_g": 12, "effective_length_mm": 237, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true }, { "id": "tonearm:1486:rek-o-kut-a-120", "display_name": "Rek-O-Kut A-120", "manufacturer": "Rek-O-Kut", "model": "A-120", "match_ready": false }, { "id": "tonearm:1487:rek-o-kut-a-160", "display_name": "Rek-O-Kut A-160", "manufacturer": "Rek-O-Kut", "model": "A-160", "match_ready": false }, { "id": "tonearm:1488:rek-o-kut-ap-320", "display_name": "Rek-O-Kut AP-320", "manufacturer": "Rek-O-Kut", "model": "AP-320", "match_ready": false }, { "id": "tonearm:1489:rek-o-kut-micropoise-s220", "display_name": "Rek-O-Kut Micropoise S220", "manufacturer": "Rek-O-Kut", "model": "Micropoise S220", "match_ready": false }, { "id": "tonearm:1490:rek-o-kut-micropoise-s260", "display_name": "Rek-O-Kut Micropoise S260", "manufacturer": "Rek-O-Kut", "model": "Micropoise S260", "match_ready": false }, { "id": "tonearm:1491:rek-o-kut-model-120", "display_name": "Rek-O-Kut model 120", "manufacturer": "Rek-O-Kut", "model": "model 120", "match_ready": false }, { "id": "tonearm:1492:rek-o-kut-model-160", "display_name": "Rek-O-Kut model 160", "manufacturer": "Rek-O-Kut", "model": "model 160", "match_ready": false }, { "id": "tonearm:1493:rek-o-kut-s-120", "display_name": "Rek-O-Kut S-120", "manufacturer": "Rek-O-Kut", "model": "S-120", "effective_length_mm": 223, "match_ready": false }, { "id": "tonearm:1494:rek-o-kut-s-160", "display_name": "Rek-O-Kut S-160", "manufacturer": "Rek-O-Kut", "model": "S-160", "effective_length_mm": 298.4, "match_ready": false }, { "id": "tonearm:1495:rek-o-kut-s-240", "display_name": "Rek-O-Kut S-240", "manufacturer": "Rek-O-Kut", "model": "S-240", "match_ready": false }, { "id": "tonearm:1496:rek-o-kut-s-260", "display_name": "Rek-O-Kut S-260", "manufacturer": "Rek-O-Kut", "model": "S-260", "match_ready": false }, { "id": "tonearm:1497:rek-o-kut-s-320", "display_name": "Rek-O-Kut S-320", "manufacturer": "Rek-O-Kut", "model": "S-320", "match_ready": false }, { "id": "tonearm:1498:rek-o-kut-transcribe-arm", "display_name": "Rek-O-Kut Transcribe Arm", "manufacturer": "Rek-O-Kut", "model": "Transcribe Arm", "match_ready": false }, { "id": "tonearm:1499:stromberg-carlson-ra-498", "display_name": "Stromberg Carlson RA-498", "manufacturer": "Stromberg Carlson", "model": "RA-498", "effective_length_mm": 222, "match_ready": false }, { "id": "tonearm:1500:brush-pl-20", "display_name": "Brush PL-20", "manufacturer": "Brush", "model": "PL-20", "match_ready": false }, { "id": "tonearm:1501:odyssey-rp1-gold", "display_name": "Odyssey RP1 Gold", "manufacturer": "Odyssey", "model": "RP1 Gold", "effective_mass_g": 17, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:1502:odyssey-rp1-xg", "display_name": "Odyssey RP1-XG", "manufacturer": "Odyssey", "model": "RP1-XG", "effective_mass_g": 17, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:1503:odyssey-rp1-xg-signature", "display_name": "Odyssey RP1-XG Signature", "manufacturer": "Odyssey", "model": "RP1-XG Signature", "effective_mass_g": 17, "effective_length_mm": 230, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:1504:onkyo-cp-1000a", "display_name": "Onkyo CP-1000A", "manufacturer": "Onkyo", "model": "CP-1000A", "match_ready": false }, { "id": "tonearm:1505:onkyo-cp-1010a", "display_name": "Onkyo CP-1010A", "manufacturer": "Onkyo", "model": "CP-1010A", "effective_length_mm": 213, "cartridge_weight_range_g": { "min": 5, "max": 8.5 }, "match_ready": false }, { "id": "tonearm:1506:onkyo-cp-1015a", "display_name": "Onkyo CP-1015A", "manufacturer": "Onkyo", "model": "CP-1015A", "match_ready": false }, { "id": "tonearm:1507:onkyo-cp-101a", "display_name": "Onkyo CP-101A", "manufacturer": "Onkyo", "model": "CP-101A", "effective_length_mm": 210, "match_ready": false }, { "id": "tonearm:1508:onkyo-cp-1020f", "display_name": "Onkyo CP-1020F", "manufacturer": "Onkyo", "model": "CP-1020F", "effective_length_mm": 224, "match_ready": false }, { "id": "tonearm:1509:onkyo-cp-1022a", "display_name": "Onkyo CP-1022A", "manufacturer": "Onkyo", "model": "CP-1022A", "match_ready": false }, { "id": "tonearm:1510:onkyo-cp-1027f", "display_name": "Onkyo CP-1027F", "manufacturer": "Onkyo", "model": "CP-1027F", "match_ready": false }, { "id": "tonearm:1511:onkyo-cp-1028rt", "display_name": "Onkyo CP-1028RT", "manufacturer": "Onkyo", "model": "CP-1028RT", "match_ready": false }, { "id": "tonearm:1512:onkyo-cp-1033a", "display_name": "Onkyo CP-1033A", "manufacturer": "Onkyo", "model": "CP-1033A", "match_ready": false }, { "id": "tonearm:1513:onkyo-cp-1046f", "display_name": "Onkyo CP-1046F", "manufacturer": "Onkyo", "model": "CP-1046F", "effective_length_mm": 224, "match_ready": false }, { "id": "tonearm:1514:onkyo-cp-1055f", "display_name": "Onkyo CP-1055F", "manufacturer": "Onkyo", "model": "CP-1055F", "match_ready": false }, { "id": "tonearm:1515:onkyo-cp-1057f", "display_name": "Onkyo CP-1057F", "manufacturer": "Onkyo", "model": "CP-1057F", "effective_length_mm": 226, "match_ready": false }, { "id": "tonearm:1516:onkyo-cp-1057f-b", "display_name": "Onkyo CP-1057F B", "manufacturer": "Onkyo", "model": "CP-1057F B", "effective_length_mm": 226, "cartridge_weight_range_g": { "min": 4, "max": 8.5 }, "match_ready": false }, { "id": "tonearm:1517:onkyo-cp-1130f", "display_name": "Onkyo CP-1130F", "manufacturer": "Onkyo", "model": "CP-1130F", "match_ready": false }, { "id": "tonearm:1518:onkyo-cp-1150f", "display_name": "Onkyo CP-1150F", "manufacturer": "Onkyo", "model": "CP-1150F", "match_ready": false }, { "id": "tonearm:1519:onkyo-cp-1200a", "display_name": "Onkyo CP-1200A", "manufacturer": "Onkyo", "model": "CP-1200A", "effective_length_mm": 210, "match_ready": false }, { "id": "tonearm:1520:onkyo-cp-1260f", "display_name": "Onkyo CP-1260F", "manufacturer": "Onkyo", "model": "CP-1260F", "match_ready": false }, { "id": "tonearm:1521:onkyo-cp-1280f", "display_name": "Onkyo CP-1280F", "manufacturer": "Onkyo", "model": "CP-1280F", "match_ready": false }, { "id": "tonearm:1522:onkyo-cp-1500f", "display_name": "Onkyo CP-1500F", "manufacturer": "Onkyo", "model": "CP-1500F", "effective_length_mm": 224, "cartridge_weight_range_g": { "min": 5, "max": 9 }, "match_ready": false }, { "id": "tonearm:1523:onkyo-cp-5000a", "display_name": "Onkyo CP-5000A", "manufacturer": "Onkyo", "model": "CP-5000A", "effective_length_mm": 210, "match_ready": false }, { "id": "tonearm:1524:grace-g-945", "display_name": "Grace G-945", "manufacturer": "Grace", "model": "G-945", "effective_length_mm": 237, "match_ready": false }, { "id": "tonearm:1525:revolver-arm", "display_name": "Revolver Arm", "manufacturer": "Revolver", "model": "Arm", "effective_length_mm": 229, "cartridge_weight_range_g": { "min": 3, "max": 7 }, "match_ready": false }, { "id": "tonearm:1526:revolver-super-arm", "display_name": "Revolver Super Arm", "manufacturer": "Revolver", "model": "Super Arm", "effective_length_mm": 229, "cartridge_weight_range_g": { "min": 3, "max": 7 }, "match_ready": false }, { "id": "tonearm:1527:revox-b790", "display_name": "Revox B790", "manufacturer": "Revox", "model": "B790", "match_ready": false }, { "id": "tonearm:1528:revox-b791", "display_name": "Revox B791", "manufacturer": "Revox", "model": "B791", "match_ready": false }, { "id": "tonearm:1529:revox-b795", "display_name": "Revox B795", "manufacturer": "Revox", "model": "B795", "match_ready": false }, { "id": "tonearm:1530:onkyo-multiac-70p", "display_name": "Onkyo Multiac 70P", "manufacturer": "Onkyo", "model": "Multiac 70P", "match_ready": false }, { "id": "tonearm:1531:cantano-t", "display_name": "Cantano T", "manufacturer": "Cantano", "model": "T", "match_ready": false }, { "id": "tonearm:1532:belldream-ta-0919", "display_name": "Belldream TA-0919", "manufacturer": "Belldream", "model": "TA-0919", "match_ready": false }, { "id": "tonearm:1533:belldream-ta-0923-go", "display_name": "Belldream TA-0923 GO", "manufacturer": "Belldream", "model": "TA-0923 GO", "match_ready": false }, { "id": "tonearm:1534:audiomeca-pierre-lurne-arm-2", "display_name": "Audiomeca - Pierre Lurne Arm 2", "manufacturer": "Audiomeca - Pierre Lurne", "model": "Arm 2", "effective_length_mm": 230, "match_ready": false }, { "id": "tonearm:1535:audiomeca-pierre-lurne-romeo", "display_name": "Audiomeca - Pierre Lurne Romeo", "manufacturer": "Audiomeca - Pierre Lurne", "model": "Romeo", "effective_mass_g": 12, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:1536:audiomeca-pierre-lurne-septum", "display_name": "Audiomeca - Pierre Lurne Septum", "manufacturer": "Audiomeca - Pierre Lurne", "model": "Septum", "match_ready": false }, { "id": "tonearm:1537:audiomeca-pierre-lurne-sl5", "display_name": "Audiomeca - Pierre Lurne SL5", "manufacturer": "Audiomeca - Pierre Lurne", "model": "SL5", "effective_length_mm": 200, "match_ready": false }, { "id": "tonearm:1538:well-tempered-arm", "display_name": "Well Tempered Arm", "manufacturer": "Well Tempered", "model": "Arm", "match_ready": false }, { "id": "tonearm:1539:vpi-industries-cliffwood-tonearm", "display_name": "VPI Industries Cliffwood Tonearm", "manufacturer": "VPI Industries", "model": "Cliffwood Tonearm", "effective_mass_g": 10.6, "effective_length_mm": 240.7, "headshell_connector": "sme_universal", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/unipivot", "https://www.soundproshop.com/product/vpi-industries-jmw-10-tonearm/" ] } }, { "id": "tonearm:1540:vpi-industries-fatboy-gimbal-10-3d", "display_name": "VPI Industries Fatboy Gimbal 10-3D", "manufacturer": "VPI Industries", "model": "Fatboy Gimbal 10-3D", "effective_mass_g": 10.7, "effective_length_mm": 273.4, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/gimbal", "https://www.fingertipsinnovation.com/product/vpi-industries-fatboy-gimbal-12-3d-tonearm/" ] } }, { "id": "tonearm:1541:vpi-industries-fatboy-gimbal-12-3d", "display_name": "VPI Industries Fatboy Gimbal 12-3D", "manufacturer": "VPI Industries", "model": "Fatboy Gimbal 12-3D", "effective_mass_g": 12.5, "effective_length_mm": 313, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/gimbal", "https://www.fingertipsinnovation.com/product/vpi-industries-fatboy-gimbal-12-3d-tonearm/" ] } }, { "id": "tonearm:1542:vpi-industries-fatboy-gimbal-9-3d", "display_name": "VPI Industries Fatboy Gimbal 9-3D", "manufacturer": "VPI Industries", "model": "Fatboy Gimbal 9-3D", "effective_mass_g": 10.2, "effective_length_mm": 240.07, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/gimbal", "https://www.fingertipsinnovation.com/product/vpi-industries-fatboy-gimbal-12-3d-tonearm/" ] } }, { "id": "tonearm:1543:vpi-industries-fatboy-jmw-9-3d", "display_name": "VPI Industries Fatboy JMW 9 3D", "manufacturer": "VPI Industries", "model": "Fatboy JMW 9 3D", "effective_mass_g": 10.2, "effective_length_mm": 240.7, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/gimbal", "https://www.fingertipsinnovation.com/product/vpi-industries-fatboy-gimbal-12-3d-tonearm/" ] } }, { "id": "tonearm:1544:vpi-industries-jmw-10", "display_name": "VPI Industries JMW 10", "manufacturer": "VPI Industries", "model": "JMW 10", "effective_mass_g": 11, "effective_length_mm": 273.42, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/unipivot", "https://www.soundproshop.com/product/vpi-industries-jmw-10-tonearm/" ] } }, { "id": "tonearm:1545:vpi-industries-jmw-10-3d", "display_name": "VPI Industries JMW 10 3D", "manufacturer": "VPI Industries", "model": "JMW 10 3D", "effective_mass_g": 9, "effective_length_mm": 273.4, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/unipivot", "https://www.soundproshop.com/product/vpi-industries-jmw-10-tonearm/" ] } }, { "id": "tonearm:1546:vpi-industries-jmw-12", "display_name": "VPI Industries JMW 12", "manufacturer": "VPI Industries", "model": "JMW 12", "match_ready": false }, { "id": "tonearm:1547:vpi-industries-jmw-12-3d", "display_name": "VPI Industries JMW 12 3D", "manufacturer": "VPI Industries", "model": "JMW 12 3D", "effective_mass_g": 10.5, "effective_length_mm": 313, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/unipivot", "https://www.soundproshop.com/product/vpi-industries-jmw-10-tonearm/" ] } }, { "id": "tonearm:1548:vpi-industries-jmw-12-6", "display_name": "VPI Industries JMW 12.6", "manufacturer": "VPI Industries", "model": "JMW 12.6", "match_ready": false }, { "id": "tonearm:1549:vpi-industries-jmw-9", "display_name": "VPI Industries JMW 9", "manufacturer": "VPI Industries", "model": "JMW 9", "effective_mass_g": 10.2, "effective_length_mm": 240.7, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/unipivot", "https://www.soundproshop.com/product/vpi-industries-jmw-10-tonearm/" ] } }, { "id": "tonearm:1550:vpi-industries-jmw-memorial", "display_name": "VPI Industries JMW Memorial", "manufacturer": "VPI Industries", "model": "JMW Memorial", "match_ready": false }, { "id": "tonearm:1551:vpi-industries-player-tonearm", "display_name": "VPI Industries Player Tonearm", "manufacturer": "VPI Industries", "model": "Player Tonearm", "effective_mass_g": 10.6, "effective_length_mm": 240.7, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/unipivot", "https://www.soundproshop.com/product/vpi-industries-jmw-10-tonearm/" ] } }, { "id": "tonearm:1552:vpi-industries-prime-gimbal-10-3d", "display_name": "VPI Industries Prime Gimbal 10-3D", "manufacturer": "VPI Industries", "model": "Prime Gimbal 10-3D", "effective_mass_g": 10.2, "effective_length_mm": 273.4, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-12", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-12", "registry_file": "engrove_headshell_effective_mass_registry_HS-12_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/gimbal", "https://www.fingertipsinnovation.com/product/vpi-industries-fatboy-gimbal-12-3d-tonearm/" ] } }, { "id": "tonearm:1553:vpi-industries-traveler", "display_name": "VPI Industries Traveler", "manufacturer": "VPI Industries", "model": "Traveler", "effective_length_mm": 251, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1554:goldring-501", "display_name": "Goldring 501", "manufacturer": "Goldring", "model": "501", "match_ready": false }, { "id": "tonearm:1555:goldring-excelda-1", "display_name": "Goldring Excelda 1", "manufacturer": "Goldring", "model": "Excelda 1", "cartridge_weight_range_g": { "min": 5, "max": 7 }, "match_ready": false }, { "id": "tonearm:1556:goldring-g60", "display_name": "Goldring G60", "manufacturer": "Goldring", "model": "G60", "match_ready": false }, { "id": "tonearm:1557:goldring-gl58", "display_name": "Goldring GL58", "manufacturer": "Goldring", "model": "GL58", "match_ready": false }, { "id": "tonearm:1558:goldring-gl65", "display_name": "Goldring GL65", "manufacturer": "Goldring", "model": "GL65", "match_ready": false }, { "id": "tonearm:1559:goldring-gl68", "display_name": "Goldring GL68", "manufacturer": "Goldring", "model": "GL68", "match_ready": false }, { "id": "tonearm:1560:goldring-gl70", "display_name": "Goldring GL70", "manufacturer": "Goldring", "model": "GL70", "match_ready": false }, { "id": "tonearm:1561:goldring-gl75", "display_name": "Goldring GL75", "manufacturer": "Goldring", "model": "GL75", "effective_length_mm": 227.9, "match_ready": false }, { "id": "tonearm:1562:goldring-gl85", "display_name": "Goldring GL85", "manufacturer": "Goldring", "model": "GL85", "match_ready": false }, { "id": "tonearm:1563:goldring-gr1", "display_name": "Goldring GR1", "manufacturer": "Goldring", "model": "GR1", "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1564:goldring-gr1-2", "display_name": "Goldring GR1.2", "manufacturer": "Goldring", "model": "GR1.2", "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1565:goldring-gr2", "display_name": "Goldring GR2", "manufacturer": "Goldring", "model": "GR2", "effective_length_mm": 237, "headshell_connector": "integrated", "match_ready": false }, { "id": "tonearm:1566:goldring-jubilee-tr1", "display_name": "Goldring Jubilee TR1", "manufacturer": "Goldring", "model": "Jubilee TR1", "effective_length_mm": 233.35, "match_ready": false }, { "id": "tonearm:1567:goldring-jubilee-tr2", "display_name": "Goldring Jubilee TR2", "manufacturer": "Goldring", "model": "Jubilee TR2", "effective_length_mm": 328.6, "match_ready": false }, { "id": "tonearm:1568:goldring-p77", "display_name": "Goldring P77", "manufacturer": "Goldring", "model": "P77", "effective_length_mm": 227.1, "match_ready": false }, { "id": "tonearm:1569:heybrook-ra20", "display_name": "Heybrook RA20", "manufacturer": "Heybrook", "model": "RA20", "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": false }, { "id": "tonearm:1570:cs-port-afu1-2", "display_name": "CS Port AFU1-2", "manufacturer": "CS Port", "model": "AFU1-2", "match_ready": false }, { "id": "tonearm:1571:moth-arm-1", "display_name": "Moth Arm 1", "manufacturer": "Moth", "model": "Arm 1", "effective_mass_g": 12, "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Moth Arm 1/2 are Rega-style integrated arm/headshell designs; no removable SME headshell mass should be added.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Rega/Moth-style arm/headshell", "source_urls": [ "https://www.vinylengine.com/library/moth.shtml" ] } }, { "id": "tonearm:1572:moth-arm-2", "display_name": "Moth Arm 2", "manufacturer": "Moth", "model": "Arm 2", "effective_mass_g": 11.5, "effective_length_mm": 237, "cartridge_weight_range_g": { "min": 4, "max": 11 }, "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-10", "effective_mass_headshell_note": "Moth Arm 1/2 are Rega-style integrated arm/headshell designs; no removable SME headshell mass should be added.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-10", "registry_file": "engrove_headshell_effective_mass_registry_HS-10_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated Rega/Moth-style arm/headshell", "source_urls": [ "https://www.vinylengine.com/library/moth.shtml" ] } }, { "id": "tonearm:1573:gold-note-b-5", "display_name": "Gold Note B-5", "manufacturer": "Gold Note", "model": "B-5", "match_ready": false }, { "id": "tonearm:1574:gold-note-b-7", "display_name": "Gold Note B-7", "manufacturer": "Gold Note", "model": "B-7", "match_ready": false }, { "id": "tonearm:1575:graham-1-5", "display_name": "Graham 1.5", "manufacturer": "Graham", "model": "1.5", "effective_length_mm": 235, "match_ready": false }, { "id": "tonearm:1576:graham-1-5-t", "display_name": "Graham 1.5 T", "manufacturer": "Graham", "model": "1.5 T", "effective_length_mm": 235, "match_ready": false }, { "id": "tonearm:1577:graham-2-0", "display_name": "Graham 2.0", "manufacturer": "Graham", "model": "2.0", "match_ready": false }, { "id": "tonearm:1578:graham-2-0-deluxe", "display_name": "Graham 2.0 deluxe", "manufacturer": "Graham", "model": "2.0 deluxe", "match_ready": false }, { "id": "tonearm:1579:graham-2-1", "display_name": "Graham 2.1", "manufacturer": "Graham", "model": "2.1", "match_ready": false }, { "id": "tonearm:1580:graham-2-1-ceramic", "display_name": "Graham 2.1 ceramic", "manufacturer": "Graham", "model": "2.1 ceramic", "match_ready": false }, { "id": "tonearm:1581:graham-2-2-deluxe", "display_name": "Graham 2.2 deluxe", "manufacturer": "Graham", "model": "2.2 deluxe", "match_ready": false }, { "id": "tonearm:1582:graham-phantom-b-44", "display_name": "Graham Phantom B-44", "manufacturer": "Graham", "model": "Phantom B-44", "cartridge_weight_range_g": { "min": 5, "max": 18 }, "match_ready": false }, { "id": "tonearm:1583:graham-phantom-b-44-sme", "display_name": "Graham Phantom B-44 (sme)", "manufacturer": "Graham", "model": "Phantom B-44 (sme)", "cartridge_weight_range_g": { "min": 5, "max": 18 }, "match_ready": false }, { "id": "tonearm:1584:graham-robin", "display_name": "Graham Robin", "manufacturer": "Graham", "model": "Robin", "match_ready": false }, { "id": "tonearm:1585:triplanar-triplanar-i", "display_name": "Triplanar I", "manufacturer": "Triplanar", "model": "I", "effective_mass_g": 12, "effective_length_mm": 233, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 5, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "No source found in this pass that explicitly states whether the published 12 g effective mass for Triplanar I includes a headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://korfaudio.com/calculator" ] } }, { "id": "tonearm:1586:triplanar-triplanar-vii", "display_name": "Triplanar VII", "manufacturer": "Triplanar", "model": "VII", "effective_mass_g": 12, "effective_length_mm": 235, "headshell_connector": "proprietary", "cartridge_weight_range_g": { "min": 8, "max": 16 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "No source found in this pass that explicitly states whether the published 12 g effective mass for Triplanar VII includes a headshell.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://korfaudio.com/calculator" ] } }, { "id": "tonearm:1587:schroder-tp-1", "display_name": "Schröder TP-1", "manufacturer": "Schröder", "model": "TP-1", "effective_mass_g": 12, "effective_length_mm": 230, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-06", "effective_mass_headshell_note": "Schröder source checked, but no TP-1 effective-mass basis or headshell inclusion statement was verified.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-06", "registry_file": "engrove_headshell_effective_mass_registry_HS-06_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "source_urls": [ "https://www.schroeder-tonarme.de/" ] } }, { "id": "tonearm:1588:jelco-tk-370", "display_name": "Jelco TK-370", "manufacturer": "Jelco", "model": "TK-370", "effective_mass_g": 12, "effective_length_mm": 222, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "min": 4, "max": 12 }, "match_ready": true, "effective_mass_headshell_basis": "unknown", "effective_mass_headshell_confidence": "low", "effective_mass_headshell_source": "HS0 artifact 827 / HS-03", "effective_mass_headshell_note": "Model-specific TK-370 evidence not found; do not apply later TK-850/TK-950 source to TK-370 without verification.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-03", "registry_file": "engrove_headshell_effective_mass_registry_HS-03_completed.json", "recommended_action": "needs_second_source", "data_patch_needed": true, "reference_headshell_mass_g": 12, "standard_headshell_model": "Jelco standard headshell", "source_urls": [ "https://bohne-audio.com/de/high-end-produkte/die-besten-high-end-analogkomponenten/jelco-tonarme/" ] } }, { "id": "tonearm:clearaudio:unity", "display_name": "Clearaudio Unity", "manufacturer": "Clearaudio", "model": "Unity", "effective_mass_g": 16, "effective_length_mm": 254, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 17 }, "match_ready": true }, { "id": "tonearm:ortofon:as-212r", "display_name": "Ortofon AS-212R", "manufacturer": "Ortofon", "model": "AS-212R", "effective_mass_g": 7, "effective_length_mm": 232, "headshell_connector": "sme_universal", "cartridge_weight_range_g": { "standard_counterweight_including_headshell": { "min": 18, "max": 26 }, "heavy_counterweight_including_headshell": { "min": 26, "max": 38 } }, "match_ready": true, "effective_mass_headshell_basis": "excludes_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-04", "effective_mass_headshell_note": "Review/source reports AS-212R effective mass 7 g and explicitly notes Ortofon did not include a headshell because chosen headshell mass varies.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-04", "registry_file": "engrove_headshell_effective_mass_registry_HS-04_completed.json", "recommended_action": "add_effective_mass_basis_only", "data_patch_needed": true, "standard_headshell_model": "User-selected headshell; not supplied as fixed reference", "source_urls": [ "https://www.theabsolutesound.com/articles/ortofon-as-212r-tonearm/", "https://ortofon.com/products/as-212r" ] } }, { "id": "tonearm:pro-ject:evo-9-cc", "display_name": "Pro-Ject EVO 9 CC", "manufacturer": "Pro-Ject", "model": "EVO 9 CC", "effective_mass_g": 8, "effective_length_mm": 230, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 7, "max": 14 }, "match_ready": true }, { "id": "tonearm:pro-ject:evo-10-cc", "display_name": "Pro-Ject EVO 10 CC", "manufacturer": "Pro-Ject", "model": "EVO 10 CC", "effective_mass_g": 8.5, "effective_length_mm": 254, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 14 }, "match_ready": true }, { "id": "tonearm:pro-ject:evo-12-cc", "display_name": "Pro-Ject EVO 12 CC", "manufacturer": "Pro-Ject", "model": "EVO 12 CC", "effective_mass_g": 10.5, "effective_length_mm": 304.8, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 6, "max": 15 }, "match_ready": true }, { "id": "tonearm:amg:9wt", "display_name": "AMG 9WT", "manufacturer": "AMG", "model": "9WT", "effective_mass_g": 10.2, "effective_length_mm": 229, "headshell_connector": "integrated", "match_ready": true }, { "id": "tonearm:vpi:s-tonearm", "display_name": "VPI S-Tonearm", "manufacturer": "VPI", "model": "S-Tonearm", "effective_mass_g": 10.4, "effective_length_mm": 255, "headshell_connector": "integrated", "cartridge_weight_range_g": { "min": 5, "max": 15 }, "match_ready": true }, { "id": "tonearm:vpi:cliffwood-tonearm", "display_name": "VPI Cliffwood Tonearm", "manufacturer": "VPI", "model": "Cliffwood Tonearm", "effective_mass_g": 10.6, "effective_length_mm": 240.7, "headshell_connector": "unknown", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/unipivot", "https://www.soundproshop.com/product/vpi-industries-jmw-10-tonearm/" ] } }, { "id": "tonearm:vpi:player-tonearm", "display_name": "VPI Player Tonearm", "manufacturer": "VPI", "model": "Player Tonearm", "effective_mass_g": 10.6, "effective_length_mm": 240.7, "headshell_connector": "unknown", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/unipivot", "https://www.soundproshop.com/product/vpi-industries-jmw-10-tonearm/" ] } }, { "id": "tonearm:vpi:prime-gimbal-10-3d-tonearm", "display_name": "VPI Prime Gimbal 10-3D Tonearm", "manufacturer": "VPI", "model": "Prime Gimbal 10-3D Tonearm", "effective_mass_g": 10.2, "effective_length_mm": 273.4, "headshell_connector": "unknown", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "medium", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/gimbal", "https://www.fingertipsinnovation.com/product/vpi-industries-fatboy-gimbal-12-3d-tonearm/" ] } }, { "id": "tonearm:vpi:fatboy-gimbal-12-3d-tonearm", "display_name": "VPI Fatboy Gimbal 12-3D Tonearm", "manufacturer": "VPI", "model": "Fatboy Gimbal 12-3D Tonearm", "effective_mass_g": 12.5, "effective_length_mm": 313, "headshell_connector": "unknown", "match_ready": true, "effective_mass_headshell_basis": "includes_integrated_headshell", "effective_mass_headshell_confidence": "high", "effective_mass_headshell_source": "HS0 artifact 827 / HS-08", "effective_mass_headshell_note": "VPI sources list the tonearm as a gimbal/unipivot armwand design and give effective mass for related models; no separate removable SME headshell is indicated.", "effective_mass_headshell_audit": { "artifact_id": "827", "batch_id": "HS-08", "registry_file": "engrove_headshell_effective_mass_registry_HS-08_completed.json", "recommended_action": "change_headshell_connector", "data_patch_needed": true, "standard_headshell_model": "Integrated VPI armwand/headshell", "source_urls": [ "https://www.vpiindustries.com/gimbal", "https://www.fingertipsinnovation.com/product/vpi-industries-fatboy-gimbal-12-3d-tonearm/" ] } } ]