{
  "schema_version": 1,
  "projection": "envoy-agent-v1",
  "identity": {
    "title": "Alesis S4 Plus Quadrasynth Rack",
    "brand": "Alesis",
    "model": null,
    "mpn": null,
    "gtins": null,
    "handle": "gm-alesis-s4-plus-alesis-s4-plus-quadrasynth-rack-31a310e0",
    "url": "https://envoy-music.myshopify.com/products/gm-alesis-s4-plus-alesis-s4-plus-quadrasynth-rack-31a310e0",
    "catalog_product_id": "product_9e4295dd31a310e0",
    "lane": "production",
    "product_object": "rackmount synths"
  },
  "offer": {
    "price": 544.63,
    "currency": "CAD",
    "available": true,
    "condition": "Very Good",
    "price_band": "mid",
    "source_verified_at": null
  },
  "specifications": {"category":"Keyboards and Synths","subcategory":"Rackmount Synths","category_path":"Keyboards and Synths \/ Synths \/ Rackmount Synths"},
  "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": "Best suited to beginners or budget-constrained shoppers building a first usable rig.\n\nWho it is for: Players building a first keyboards and synths setup with limited budget and a need for obvious, low-friction value.\n\nWho should skip it: Skip it if you need advanced feature depth, tour-grade reliability, or a fully pro-ready setup out of the gate.",
    "watchouts": null,
    "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": "Alesis S4 Plus Quadrasynth Rack. Alesis. S4 Plus. Keyboards and Synths. Keyboards and Synths \/ Synths \/ Rackmount Synths Keyboards and Synths \/ Synths \/ Digital Synths. available from reverb. price range 397.54 USD. condition Very Good. The S4 is the rack-mount version of the famous QuadraSynth: - 64-voice digital synthesizer. - 20M MB of sample ROM - 4 MB of General MIDI Pianos - ADAT Optical Digital interface - multi-effects processor as the QuadraVerb 2 - drum kits based on the Alesis D4 drum module - 4 assignable control knobs - one PCMCIA card slot - 48kHz clock input - 4 audio outputs. This particular unit is top condition, was used in a theater. The Global switch is a little bit harder the other swicths work well as the control knobs\/volume. As the original power supply. Comes with the original manual.. Alesis S4 Plus Quadrasynth Rack. Alesis. S4 Plus. 1998. Very Good. Keyboards and Synths. Keyboards and Synths \/ Synths \/ Rackmount Synths Keyboards and Synths \/ Synths \/ Digital Synths. The S4 is the rack-mount version of the famous QuadraSynth: - 64-voice digital synthesizer. - 20M MB of sample ROM - 4 MB of General MIDI Pianos - ADAT Optical Digital interface - multi-effects processor as the QuadraVerb 2 - drum kits based on the Alesis D4 drum module - 4 assignable control knobs - one PCMCIA card slot - 48kHz clock input - 4 audio outputs. This particular unit is top condition, was used in a theater. The Global switch is a little bit harder the other swicths work well as the control knobs\/volume. As the original power supply. Comes with the original manual.. vcs3's Shop. Alvor, Portugal. tags source:reverb family:keyboards_and_synths listing_status:live brand:alesis model:s4_plus category:keyboards_and_synths_synths_rackmount_synths category:keyboards_and_synths_synths_digital_synths price_band:entry segment:beginner condition:very_good has:photos",
    "agent_summary": "Alesis S4 Plus is a beginner-friendly keyboards and synths listing with marketplace-sourced data. Alesis S4 Plus Quadrasynth Rack currently sits around 397.54 USD. The S4 is the rack-mount version of the famous QuadraSynth: - 64-voice digital synthesizer. Marketplace data is richer on listing context, but it needs more buyer verification. Good visual coverage for spot-checking the item. Marketplace listing quality varies by seller, so condition and included items still need verification.",
    "intent_terms": ["Alesis S4 Plus Quadrasynth Rack","Alesis","S4 Plus","Keyboards and Synths","Keyboards and Synths \/ Synths \/ Rackmount Synths","Keyboards and Synths \/ Synths \/ Digital Synths","brand:alesis","category:keyboards_and_synths_synths_digital_synths","category:keyboards_and_synths_synths_rackmount_synths","condition:very_good","family:keyboards_and_synths","has:photos","listing_status:live","model:s4_plus","price_band:entry","segment:beginner","source:reverb","brand alesis","category keyboards and synths synths digital synths","category keyboards and synths synths rackmount synths","condition very good","family keyboards and synths","has photos","listing status live","model s4 plus","price band entry","segment beginner","source reverb","home-recording","content-creation","practice","starter-rig","live-performance","tone-shaping","vcs3's Shop","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": ["studio-recording","live-performance","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": null
  },
  "related": {
    "similar_item_ids": ["product_0f8c7a8b7a6f337b","product_8ec1bee5490c5b68"],
    "comparison_reasons": ["source_count:1","family:Keyboards and Synths","marketplace_only","identity_confidence:0.9"]
,
    "related_products": [{ "title": "Alesis Q-Card Classical Instruments Plus 1996", "url": "https://envoy-music.myshopify.com/products/gm-alesis-q-card-classical-instruments-plus-alesis-q-card-classical-instr-7a6f337b", "handle": "gm-alesis-q-card-classical-instruments-plus-alesis-q-card-classical-instr-7a6f337b" },{ "title": "Alesis S4Plus", "url": "https://envoy-music.myshopify.com/products/gm-alesis-s4plus-alesis-s4plus-490c5b68", "handle": "gm-alesis-s4plus-alesis-s4plus-490c5b68" }]}
}