{
  "schema_version": 1,
  "projection": "envoy-agent-v1",
  "identity": {
    "title": "HAZELRIGG INDUSTRIES VDP — Microphone",
    "brand": "HAZELRIGG INDUSTRIES",
    "model": "VDP",
    "mpn": null,
    "gtins": null,
    "handle": "ca-hazelrigg-industries-vdp-17957c2bf3",
    "url": "https://envoy-music.myshopify.com/products/ca-hazelrigg-industries-vdp-17957c2bf3",
    "catalog_product_id": "catalog:71c6a1b35e90",
    "lane": "studio",
    "product_object": null
  },
  "offer": {
    "price": 5499.0,
    "currency": "CAD",
    "available": true,
    "condition": "Brand New",
    "price_band": "high",
    "source_verified_at": "2026-07-10T23:56:52Z"
  },
  "specifications": {"category":"studio","subcategory":"studio","category_path":"studio","groups":[{"id":"format","label":"Format","fields":[{"key":"product_type","label":"Product type","value":"Two-channel all-tube microphone preamp and DI","display":"Two-channel all-tube microphone preamp and DI","source":"Hazelrigg Industries VDP product page","confidence":0.9},{"key":"origin","label":"Origin","value":"Handcrafted in the USA","display":"Handcrafted in the USA","source":"Hazelrigg Industries VDP product page","confidence":0.9},{"key":"rack_format","label":"Rack format","value":"2U 19-inch rackmount","display":"2U 19-inch rackmount","source":"Perfect Circuit Hazelrigg Industries VDP listing","confidence":0.7}]},{"id":"circuit","label":"Circuit","fields":[{"key":"signal_path","label":"Signal path","value":"All-tube signal path","display":"All-tube signal path","source":"Hazelrigg Industries VDP product page","confidence":0.9},{"key":"transformers","label":"Transformers","value":"Transformer-coupled input and output","display":"Transformer-coupled input and output","source":"Hazelrigg Industries VDP product page","confidence":0.9},{"key":"design_basis","label":"Design basis","value":"Based on D.W. Fearn VT-series preamp and power-supply design","display":"Based on D.W. Fearn VT-series preamp and power-supply design","source":"Hazelrigg Industries VDP product page and Production Expert article","confidence":0.9},{"key":"tube_complement","label":"Tube complement","value":"Two 6072A and two 12AT7 tubes listed by retailer\/editorial sources","display":"Two 6072A and two 12AT7 tubes listed by retailer\/editorial sources","source":"Perfect Circuit and Production Expert VDP pages","confidence":0.7}]},{"id":"controls_and_i_o","label":"Controls and I\/O","fields":[{"key":"inputs","label":"Inputs","value":"Front-panel microphone\/instrument input plus redundant rear microphone input","display":"Front-panel microphone\/instrument input plus redundant rear microphone input","source":"Hazelrigg Industries VDP product page","confidence":0.9},{"key":"di_sensing","label":"Di sensing","value":"Automatic DI sensing","display":"Automatic DI sensing","source":"Hazelrigg Industries VDP product page","confidence":0.9},{"key":"phantom_power","label":"Phantom power","value":"Aircraft-inspired locking +48 V phantom-power switch","display":"Aircraft-inspired locking +48 V phantom-power switch","source":"Hazelrigg Industries VDP product page","confidence":0.9},{"key":"pad","label":"Pad","value":"-20 dB pad switch","display":"-20 dB pad switch","source":"Hazelrigg Industries VDP product page","confidence":0.9},{"key":"polarity","label":"Polarity","value":"Polarity reversal switch","display":"Polarity reversal switch","source":"Hazelrigg Industries VDP product page","confidence":0.9}]},{"id":"performance","label":"Performance","fields":[{"key":"gain","label":"Gain","value":"+63 dB gain listed by retailer\/editorial sources","display":"+63 dB gain listed by retailer\/editorial sources","source":"Perfect Circuit and Production Expert VDP pages","confidence":0.7},{"key":"frequency_response","label":"Frequency response","value":"+\/-0.6 dB from 20 Hz to 20 kHz","display":"+\/-0.6 dB from 20 Hz to 20 kHz","source":"Perfect Circuit Hazelrigg Industries VDP listing","confidence":0.7},{"key":"thd","label":"Thd","value":"\u003c0.5% from 15 Hz to 15 kHz","display":"\u003c0.5% from 15 Hz to 15 kHz","source":"Perfect Circuit Hazelrigg Industries VDP listing","confidence":0.7},{"key":"input_impedance","label":"Input impedance","value":"150 ohms, optimized for 1.5 kOhm load","display":"150 ohms, optimized for 1.5 kOhm load","source":"Perfect Circuit Hazelrigg Industries VDP listing","confidence":0.7},{"key":"output_type","label":"Output type","value":"Low-Z transformer-balanced output","display":"Low-Z transformer-balanced output","source":"Perfect Circuit Hazelrigg Industries VDP listing","confidence":0.7}]}]},
  "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": "Tracking engineers who want a two-channel tube preamp\/DI with Fearn-derived topology, transformer coupling and front\/rear input workflow.",
    "who_should_skip": "Users needing recall automation, integrated EQ\/compression, digital conversion, compact 500-series format, or more than two channels.",
    "fit_notes": "The locking phantom switches and pad\/polarity controls suit mixed microphone sessions, but full physical dimensions and weight should be confirmed with a dealer.",
    "watchouts": "Manufacturer page gives key features but not a full technical table; detailed gain and performance specs are corroborated from retailer\/editorial sources.",
    "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": "VDP is a recording and studio product represented by 1 current Canadian retailer offer, starting at 5499.00 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": "HAZELRIGG INDUSTRIES VDP. visible colors: gray, black, red, silver. visible controls: rotary knob, toggle switch. panel text: HAZELRIGG INDUSTRIES; Channel 1; Channel 2; VDP; ATTENUATION; +48; -20; POL; ON; OFF.",
    "intent_terms": ["studio","home_recording","content_creation","signal_chain","VDP","HAZELRIGG INDUSTRIES","Dual Mic-Preamps","verified retail listing","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": {"specifications":{"source_url":"https:\/\/www.hazelriggindustries.com\/vdp","method":"gear_universe_read_model","fetched":"2026-07-21"}}
  },
  "related": {
    "similar_item_ids": [],
    "comparison_reasons": ["source_count:1","lane:studio","verified retail listing_reference"]
}
}