{
  "schema_version": 1,
  "projection": "envoy-agent-v1",
  "identity": {
    "title": "Vintage Altec 1678B 8-Channel Microphone Mixer \u0026 Preamp",
    "brand": "Altec",
    "model": null,
    "mpn": null,
    "gtins": null,
    "handle": "gm-altec-1678b-vintage-altec-1678b-8-channel-microphone-mixer-preamp-8b64bff9",
    "url": "https://envoy-music.myshopify.com/products/gm-altec-1678b-vintage-altec-1678b-8-channel-microphone-mixer-preamp-8b64bff9",
    "catalog_product_id": "product_980797b38b64bff9",
    "lane": "studio",
    "product_object": "microphone mixer preamp"
  },
  "offer": {
    "price": 260.29,
    "currency": "CAD",
    "available": true,
    "condition": "Very Good",
    "price_band": "mid",
    "source_verified_at": null
  },
  "specifications": {"type":"json","groups":[]},
  "connectivity": null,
  "power": null,
  "included_items": null,
  "required_accessories": null,
  "optional_accessories": null,
  "compatibility": null,
  "advisor": {
    "best_for": "Not listed — held pending better source coverage.",
    "who_should_skip": null,
    "fit_notes": "Not listed — held pending better source coverage.",
    "watchouts": "Prior auto-extracted specs for this listing were held as untrusted.",
    "verification_questions": null
  },
  "retrieval": {
    "summary": null,
    "agent_summary": null,
    "intent_terms": null,
    "use_cases": ["studio-recording","live-performance"],
    "skill_level": "pro"
  },
  "trust": {
    "has_verified_retail_listing": false,
    "source_count": 0,
    "source_tier_mix": null,
    "evidence_flags": null,
    "spec_provenance": null
  },
  "related": {
    "similar_item_ids": null,
    "comparison_reasons": null
}
}