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  "identity": {
    "title": "Doepfer A-140 ADSR Envelope Generator 2010s - Silver",
    "brand": "Doepfer",
    "model": null,
    "mpn": null,
    "gtins": null,
    "handle": "gm-doepfer-a-140-adsr-envelope-generator-doepfer-a-140-adsr-envelope-gene-9bf3863c",
    "url": "https://envoy-music.myshopify.com/products/gm-doepfer-a-140-adsr-envelope-generator-doepfer-a-140-adsr-envelope-gene-9bf3863c",
    "catalog_product_id": "product_7a3a6d9d9bf3863c",
    "lane": "production",
    "product_object": "eurorack"
  },
  "offer": {
    "price": 104.13,
    "currency": "CAD",
    "available": true,
    "condition": "Very Good",
    "price_band": "entry",
    "source_verified_at": null
  },
  "specifications": {"type":"json","groups":[{"name":"Module format","fields":[{"label":"Width","value":"8 HP \/ 8 TE \/ 40.3 mm","source":"https:\/\/doepfer.de\/a140.htm"},{"label":"Depth","value":"50 mm measured from the rear side of the front panel","source":"https:\/\/doepfer.de\/a140.htm"},{"label":"Current consumption","value":"+20 mA at +12 V; -20 mA at -12 V","source":"https:\/\/doepfer.de\/a140.htm"}]},{"name":"Envelope and I\/O","fields":[{"label":"Output voltage range","value":"Normal outputs about 0 to +8 V; inverted output about 0 to -8 V","source":"https:\/\/doepfer.de\/a140.htm"},{"label":"Attack time ranges","value":"L: 20 µs to 100 ms; M: 400 µs to 2 s; H: 20 ms to 120 s","source":"https:\/\/doepfer.de\/a140.htm"},{"label":"Inputs","value":"Gate input plus retrigger input; gate input can trigger from the A-100 system bus when unpatched","source":"https:\/\/doepfer.de\/a100_man\/A140_man.pdf"}]}]},
  "connectivity": null,
  "power": null,
  "included_items": null,
  "required_accessories": ["keyboard stand","sustain pedal","headphones or amp"],
  "optional_accessories": null,
  "compatibility": null,
  "advisor": {
    "best_for": null,
    "who_should_skip": null,
    "fit_notes": null,
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    "verification_questions": ["Can you confirm exactly what is included in the sale and show it in current photos?","Are there any functional issues, repairs, or missing parts not shown in the listing?","Can you provide close-up photos of wear points, serial numbers, and any modifications?","Can you confirm the core specs that matter for compatibility in this setup?","Is this still available and has anything changed since the listing was posted?"]
  },
  "retrieval": {
    "summary": "Doepfer A-140 ADSR Envelope Generator 2010s - Silver. Doepfer. A-140 ADSR Envelope Generator. Keyboards and Synths. Keyboards and Synths \/ Synths \/ Eurorack Keyboards and Synths \/ Synths \/ Modular Synths \/ Synth Modules. available from reverb. price range 76.01 USD. condition Very Good. The module A-140 is a envelope generator and since it delivers control voltages, belongs to the modulation-modules. As soon as the ADSR is triggered at gate-input, it generates an adjustable control signal called the envelope. This envelope is present on its outputs in normal and inverted S-form and can be used e.g. for modulation of VCO, VCF and VCA modules as well as for transient and decay oscillations of other modules. The S-form of the envelope is unambiguously defined by four parameters, attack, decay, sustain and release. The ADSR is triggered with a gate-signal at gate-input and provides the possibility of a retrigger-Function, i.e. the envelope will be restarted every time a trigger signal is present at the retrigger-socket while the gate is active. In connection with the comparator-module A-167 a free run \"ADSR-LFO\" can be realised. Envelope Generator - Parameters can be set independently - 3-Step switch for selecting the time range - Eurorack format - Width: 8 HP - Depth: 50 mm - Power requirements: +20 mA (+ 12V) \/ -20 mA (-12V). Doepfer A-140 ADSR Envelope Generator 2010s - Silver. Doepfer. A-140 ADSR Envelope Generator. Silver. Very Good. Keyboards and Synths. Keyboards and Synths \/ Synths \/ Eurorack Keyboards and Synths \/ Synths \/ Modular Synths \/ Synth Modules. The module A-140 is a envelope generator and since it delivers control voltages, belongs to the modulation-modules. As soon as the ADSR is triggered at gate-input, it generates an adjustable control signal called the envelope. This envelope is present on its outputs in normal and inverted S-form and can be used e.g. for modulation of VCO, VCF and VCA modules as well as for transient and decay oscillations of other modules. The S-form of the envelope is unambiguously defined by four parameters, attack, decay, sustain and release. The ADSR is triggered with a gate-signal at gate-input and provides the possibility of a retrigger-Function, i.e. the envelope will be restarted every time a trigger signal is present at the retrigger-socket while the gate is active. In connection with the comparator-module A-167 a free run \"ADSR-LFO\" can be realised. Envelope Generator - Parameters can be set independently - 3-Step switch for selecting the time range - Eurorack format - Width: 8 HP - Depth: 50 mm - Power requirements: +20 mA (+ 12V) \/ -20 mA (-12V). WillB’s Boutique. Caterham, United Kingdom. tags source:reverb family:keyboards_and_synths listing_status:live brand:doepfer model:a_140_adsr_envelope_generator category:keyboards_and_synths_synths_eurorack category:keyboards_and_synths_synths_modular_synths_synth_modules price_band:entry segment:beginner condition:very_good has:photos",
    "agent_summary": "Doepfer A-140 ADSR Envelope Generator is a beginner-friendly keyboards and synths listing with marketplace-sourced data. Doepfer A-140 ADSR Envelope Generator 2010s - Silver currently sits around 76.01 USD. The module A-140 is a envelope generator and since it delivers control voltages, belongs to the modulation-modules. Marketplace data is richer on listing context, but it needs more buyer verification. Entry-level price positioning makes it accessible for new players. Marketplace listing quality varies by seller, so condition and included items still need verification.",
    "intent_terms": ["Doepfer A-140 ADSR Envelope Generator 2010s - Silver","Doepfer","A-140 ADSR Envelope Generator","Keyboards and Synths","Keyboards and Synths \/ Synths \/ Eurorack","Keyboards and Synths \/ Synths \/ Modular Synths \/ Synth Modules","brand:doepfer","category:keyboards_and_synths_synths_eurorack","category:keyboards_and_synths_synths_modular_synths_synth_modules","condition:very_good","family:keyboards_and_synths","has:photos","listing_status:live","model:a_140_adsr_envelope_generator","price_band:entry","segment:beginner","source:reverb","brand doepfer","category keyboards and synths synths eurorack","category keyboards and synths synths modular synths synth modules","condition very good","family keyboards and synths","has photos","listing status live","model a 140 adsr envelope generator","price band entry","segment beginner","source reverb","practice","starter-rig","live-performance","tone-shaping","WillB’s Boutique","Best suited to beginners or budget-constrained shoppers building a first usable rig.","Players building a first keyboards and synths setup with limited budget and a need for obvious","low-friction value."],
    "use_cases": ["modular-synthesis","sound-design"],
    "skill_level": "intermediate"
  },
  "trust": {
    "has_verified_retail_listing": true,
    "source_count": 1,
    "source_tier_mix": ["marketplace"],
    "evidence_flags": {"has_description":true,"has_images":true,"has_reviews":false,"has_specs":false,"source_count":1},
    "spec_provenance": {"specifications":{"source_url":"https:\/\/doepfer.de\/a140.htm","method":"gear_universe_read_model","fetched":"2026-07-30"}}
  },
  "related": {
    "similar_item_ids": ["product_958289aba3c03d37","product_c9f81c4f39706e9d","product_dbc0d92ee68b9ca2","product_d9d60f909475c717","product_42cdcf58f0a41278","product_7983ef04246c524e","product_a0a33958d9610ca2","product_45a7d2ea6cd4952f"],
    "comparison_reasons": ["source_count:1","family:Keyboards and Synths","marketplace_only","identity_confidence:0.9"]
,
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}