{
  "schema_version": 1,
  "projection": "envoy-agent-v1",
  "identity": {
    "title": "Heritage Audio LANG 312L 500 Series NY Style Preamp",
    "brand": "Heritage Audio",
    "model": "312L",
    "mpn": null,
    "gtins": null,
    "handle": "ca-heritage-audio-heritage-audio-lang-312l-500-series-ny-s-023f0ed7de",
    "url": "https://envoy-music.myshopify.com/products/ca-heritage-audio-heritage-audio-lang-312l-500-series-ny-s-023f0ed7de",
    "catalog_product_id": "catalog:fd2352bdd79f",
    "lane": "studio",
    "product_object": "500 series preamp"
  },
  "offer": {
    "price": 599.0,
    "currency": "CAD",
    "available": true,
    "condition": "Brand New",
    "price_band": "mid",
    "source_verified_at": "2026-07-10T22:12:37Z"
  },
  "specifications": {"category":"studio","subcategory":"studio","category_path":"studio"},
  "connectivity": null,
  "power": null,
  "included_items": null,
  "required_accessories": ["appropriate audio and data cables","compatible monitoring, mounting, or power setup"],
  "optional_accessories": null,
  "compatibility": null,
  "advisor": {
    "best_for": null,
    "who_should_skip": null,
    "fit_notes": "Best suited to buyers who can place it within a known recording, monitoring, or signal-routing workflow.\n\nWho it is for: Home, project, and professional studio buyers comparing a specific recording or monitoring role.\n\nWho should skip it: Skip it until computer, operating-system, I\/O, cabling, mounting, and room requirements are confirmed.",
    "watchouts": null,
    "verification_questions": ["Which connections, drivers, operating systems, and sample rates are supported by this exact revision?","What cables, mounts, power supplies, or licenses are included?","Is the current retailer listing new stock, demo stock, open box, or special order?","Is the item still in stock at the displayed price, and what is the complete delivered cost to the intended destination?"]
  },
  "retrieval": {
    "summary": "Heritage Audio LANG 312L 500 Series NY Style Preamp is a recording and studio product represented by 1 current Canadian retailer offer, starting at 599.00 CAD. Best suited to buyers who can place it within a known recording, monitoring, or signal-routing workflow. EnvoyMusic has verified the source price and availability signal, but has not independently verified every technical specification or US fulfillment detail. This is an verified retail listing reference, not inventory stocked or fulfilled by EnvoyMusic. Retailer price and availability can change; recheck the source before making a purchase decision. Skip it until computer, operating-system, I\/O, cabling, mounting, and room requirements are confirmed.",
    "agent_summary": "Heritage Audio LANG 312L 500 Series NY Style Preamp. HERITAGE AUDIO 312L. visible colors: silver, black, red, green. visible controls: knob, push button. panel text: LANG ELECTRONICS INC.; GAIN; RIBBON \u0026 SM7; PHASE; +48V; PAD; BY HERITAGE AUDIO; 312L; DI.",
    "intent_terms": ["studio","home_recording","content_creation","signal_chain","Heritage Audio LANG 312L 500 Series NY Style Preamp","Heritage Audio","Signal Processing","Moog Audio","recording and studio product","home recording","content creation","signal chain"],
    "use_cases": ["studio-recording"],
    "skill_level": "pro"
  },
  "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:studio","verified retail listing_reference"]
}
}