{
  "schema_version": 1,
  "projection": "envoy-agent-v1",
  "identity": {
    "title": "Granite Audio Ground Zero #500 - Black",
    "brand": "Granite Audio",
    "model": null,
    "mpn": null,
    "gtins": null,
    "handle": "gm-granite-audio-ground-zero-500-granite-audio-ground-zero-500-black-6e9b2d9d",
    "url": "https://envoy-music.myshopify.com/products/gm-granite-audio-ground-zero-500-granite-audio-ground-zero-500-black-6e9b2d9d",
    "catalog_product_id": "product_69d5e3856e9b2d9d",
    "lane": "studio",
    "product_object": null
  },
  "offer": {
    "price": 411.0,
    "currency": "CAD",
    "available": true,
    "condition": "Excellent",
    "price_band": "mid",
    "source_verified_at": null
  },
  "specifications": {"category":"Pro Audio","subcategory":"Pro Audio","category_path":"Pro Audio"},
  "connectivity": null,
  "power": null,
  "included_items": null,
  "required_accessories": ["appropriate cables","monitoring solution","mount or stand if relevant"],
  "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 pro audio 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": "Granite Audio Ground Zero #500 - Black. Granite Audio. Ground Zero #500. Pro Audio. Pro Audio. available from reverb. price range 300 USD. condition Excellent. New in box Highly regarded and rarely seen on the used market! For sale is a Granite Audio Ground Zero Model 500 unit with all original cables (enough to ground 8 units). Very effective at curing ground loops and at reducing line noise. Comes with original instruction sheet.. Granite Audio Ground Zero #500 - Black. Granite Audio. Ground Zero #500. Black. Excellent. Pro Audio. Pro Audio. New in box Highly regarded and rarely seen on the used market! For sale is a Granite Audio Ground Zero Model 500 unit with all original cables (enough to ground 8 units). Very effective at curing ground loops and at reducing line noise. Comes with original instruction sheet.. Pot \u0026 Pedals . Maitland, FL, United States. tags source:reverb family:pro_audio listing_status:live brand:granite_audio model:ground_zero_500 category:pro_audio price_band:entry segment:beginner condition:excellent has:photos",
    "agent_summary": "Granite Audio Ground Zero #500 is a beginner-friendly pro audio listing with marketplace-sourced data. Granite Audio Ground Zero #500 - Black currently sits around 300 USD. New in box Highly regarded and rarely seen on the used market! 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": ["Granite Audio Ground Zero #500 - Black","Granite Audio","Ground Zero #500","Pro Audio","brand:granite_audio","category:pro_audio","condition:excellent","family:pro_audio","has:photos","listing_status:live","model:ground_zero_500","price_band:entry","segment:beginner","source:reverb","brand granite audio","category pro audio","condition excellent","family pro audio","has photos","listing status live","model ground zero 500","price band entry","segment beginner","source reverb","practice","starter-rig","live-performance","tone-shaping","signal-chain","Pot \u0026 Pedals","Best suited to beginners or budget-constrained shoppers building a first usable rig.","Players building a first pro audio setup with limited budget and a need for obvious","low-friction value."],
    "use_cases": null,
    "skill_level": null
  },
  "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": [],
    "comparison_reasons": ["source_count:1","family:Pro Audio","marketplace_only","identity_confidence:0.9"]
}
}