{
  "schema_version": 1,
  "projection": "envoy-agent-v1",
  "identity": {
    "title": "Marshall SV20C Studio Vintage 20W Tube Combo Amp",
    "brand": "Envoy Music",
    "model": null,
    "mpn": "SV20C",
    "gtins": null,
    "handle": "ca-gear-marshall-sv20c-studio-vintage-20w-tube-combo-amp-f5295142b5",
    "url": "https://envoy-music.myshopify.com/products/ca-gear-marshall-sv20c-studio-vintage-20w-tube-combo-amp-f5295142b5",
    "catalog_product_id": "catalog:c8bb36dddee5",
    "lane": "parts",
    "product_object": null
  },
  "offer": {
    "price": 2299.99,
    "currency": "CAD",
    "available": true,
    "condition": "Brand New",
    "price_band": null,
    "source_verified_at": null
  },
  "specifications": {"category":"parts","category_path":"parts","groups":[{"id":"specifications","label":"Specifications","fields":[{"key":"product_type","label":"Product type","value":"parts","display":"parts","source":"shopify_product_type","confidence":1},{"key":"condition","label":"Condition","value":"Brand New","display":"Brand New","source":"envoymusic_condition","confidence":0.95},{"key":"brand","label":"Brand \/ vendor","value":"Envoy Music","display":"Envoy Music","source":"shopify_vendor","confidence":0.9}]}],"unknowns":[{"field":"fit_standard","label":"Fit standard","question":"Which standard does this part fit?"},{"field":"fits_models","label":"Fits models","question":"Will it fit MY instrument?"},{"field":"dimensions","label":"Dimensions","question":"Do the measurements match what I'm replacing?"},{"field":"material","label":"Material","question":"What is it made of?"},{"field":"finish","label":"Finish","question":"Does the finish match my hardware?"},{"field":"sold_as","label":"Sold as","question":"Single, pair, or set?"},{"field":"included_hardware","label":"Included hardware","question":"Are screws\/bushings included?"}]},
  "connectivity": null,
  "power": null,
  "included_items": null,
  "required_accessories": ["model-appropriate mounting hardware","installation tools or qualified technician"],
  "optional_accessories": null,
  "compatibility": null,
  "advisor": {
    "best_for": "Builders and repair buyers who can verify fit, measurements, mounting pattern, and required installation work.",
    "who_should_skip": "Skip it if the target instrument, dimensions, or installation requirements have not been confirmed.",
    "fit_notes": "Best suited to a repair or custom-build project with known dimensions and compatibility requirements.\n\nWho it is for: Builders and repair buyers who can verify fit, measurements, mounting pattern, and required installation work.\n\nWho should skip it: Skip it if the target instrument, dimensions, or installation requirements have not been confirmed.",
    "watchouts": "This is an external retailer reference, not inventory stocked or fulfilled by EnvoyMusic.\nRetailer price and availability can change; recheck the source before making a purchase decision.\nSkip it if the target instrument, dimensions, or installation requirements have not been confirmed.",
    "verification_questions": ["What exact dimensions, mounting pattern, and model compatibility does this part support?","Is all required mounting hardware included?","Does installation require routing, drilling, soldering, or other irreversible work?","Is the item still in stock at the displayed price, and what is the complete delivered cost to the intended destination?"]
  },
  "retrieval": {
    "summary": "Marshall SV20C Studio Vintage 20W Tube Combo Amp is a repair, replacement, or custom-build part represented by 1 current Canadian retailer offer, starting at 2299.99 CAD. Best suited to a repair or custom-build project with known dimensions and compatibility requirements. EnvoyMusic has verified the source price and availability signal, but has not independently verified every technical specification or US fulfillment detail. This is an external retailer reference, not inventory stocked or fulfilled by EnvoyMusic. Retailer price and availability can change; recheck the source before making a purchase decision. Skip it if the target instrument, dimensions, or installation requirements have not been confirmed.",
    "agent_summary": "Marshall SV20C Studio Vintage 20W Tube Combo Amp is a repair, replacement, or custom-build part represented by 1 current Canadian retailer offer, starting at 2299.99 CAD.",
    "intent_terms": ["parts","repair","custom_build","upgrade","Marshall SV20C Studio Vintage 20W Tube Combo Amp","Electric Amps","verified retail listing","repair, replacement, or custom-build part","custom build"],
    "use_cases": null,
    "skill_level": null
  },
  "trust": {
    "has_verified_retail_listing": true,
    "source_count": 1,
    "source_tier_mix": ["retailer"],
    "evidence_flags": {"external_inventory":true,"source_availability":true,"source_price":true,"source_url":true,"structured_specs":false},
    "spec_provenance": null
  },
  "related": {
    "similar_item_ids": [],
    "comparison_reasons": ["source_count:1","lane:parts","external_retailer_reference"]
}
}