{
  "schema_version": 1,
  "projection": "envoy-agent-v1",
  "identity": {
    "title": "H2 AUDIO 0011 Stereo Black — Microphone",
    "brand": "H2 AUDIO",
    "model": "0011 Stereo Black",
    "mpn": null,
    "gtins": null,
    "handle": "ca-h2-audio-0011-stereo-black-3ab9c6b64e",
    "url": "https://envoy-music.myshopify.com/products/ca-h2-audio-0011-stereo-black-3ab9c6b64e",
    "catalog_product_id": "catalog:855d031088ce",
    "lane": "studio",
    "product_object": "microphone preamp"
  },
  "offer": {
    "price": 5665.0,
    "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":"channels","label":"Channels","value":"Dual-channel \/ stereo","display":"Dual-channel \/ stereo","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"rack_format","label":"Rack format","value":"2U 19-inch rackmount","display":"2U 19-inch rackmount","source":"Vintage King H2 Audio Helios 0011\/Stereo listing and Sweetwater listing","confidence":0.9},{"key":"topology","label":"Topology","value":"Solid-state, 100% analog Helios 2128-style preamp\/EQ circuit","display":"Solid-state, 100% analog Helios 2128-style preamp\/EQ circuit","source":"H2 Audio homepage and Vintage King listing","confidence":0.9},{"key":"finish","label":"Finish","value":"Black finish variant in input catalog; finish-specific MPN not verified","display":"Black finish variant in input catalog; finish-specific MPN not verified","source":"EnvoyMusic input catalog and reviewed listings","confidence":0.7}]},{"id":"preamp","label":"Preamp","fields":[{"key":"preamp_circuit","label":"Preamp circuit","value":"Two channels replicating Helios 2128 microphone preamp circuits","display":"Two channels replicating Helios 2128 microphone preamp circuits","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"gain_range","label":"Gain range","value":"25 to 75 dB in 5 dB increments","display":"25 to 75 dB in 5 dB increments","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"input_transformers","label":"Input transformers","value":"Lustraphone input transformers provide 20 dB gain before the preamps","display":"Lustraphone input transformers provide 20 dB gain before the preamps","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"pad","label":"Pad","value":"-20 dB pads","display":"-20 dB pads","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"phantom_power","label":"Phantom power","value":"+48 V phantom power","display":"+48 V phantom power","source":"Sweetwater H2 Audio 0011 Stereo listing","confidence":0.9},{"key":"polarity","label":"Polarity","value":"Phase switches","display":"Phase switches","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9}]},{"id":"eq_and_filtering","label":"EQ and Filtering","fields":[{"key":"eq_type","label":"Eq type","value":"Inductor-based LF\/MF EQ with selectable LF and MF plus fixed 10 kHz HF controls","display":"Inductor-based LF\/MF EQ with selectable LF and MF plus fixed 10 kHz HF controls","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"low_band","label":"Low band","value":"Bass boosts at 60, 100, 200 or 300 Hz; 50 Hz filter cuts selectable at 3, 6, 9, 12 or 15 dB","display":"Bass boosts at 60, 100, 200 or 300 Hz; 50 Hz filter cuts selectable at 3, 6, 9, 12 or 15 dB","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"mid_band","label":"Mid band","value":"0.7, 1, 1.4, 2, 2.8, 3.5, 4.5 or 6 kHz boost\/cut; PK\/TR switch for peaks or troughs","display":"0.7, 1, 1.4, 2, 2.8, 3.5, 4.5 or 6 kHz boost\/cut; PK\/TR switch for peaks or troughs","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"high_band","label":"High band","value":"10 kHz bell-shaped boosts\/cuts at -10 to +10 dB in 2 dB steps","display":"10 kHz bell-shaped boosts\/cuts at -10 to +10 dB in 2 dB steps","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"high_pass_filter","label":"High pass filter","value":"Selectable 40 Hz and 80 Hz high-pass filters, plus bypass\/off","display":"Selectable 40 Hz and 80 Hz high-pass filters, plus bypass\/off","source":"Sweetwater H2 Audio 0011 Stereo listing","confidence":0.9},{"key":"eq_bypass","label":"Eq bypass","value":"EQ bypass","display":"EQ bypass","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9}]},{"id":"connectivity_and_output","label":"Connectivity and Output","fields":[{"key":"line_inputs","label":"Line inputs","value":"Electronically balanced line inputs","display":"Electronically balanced line inputs","source":"Sweetwater H2 Audio 0011 Stereo listing","confidence":0.9},{"key":"output_stage","label":"Output stage","value":"Transformer-balanced line output amplifiers with custom output transformers","display":"Transformer-balanced line output amplifiers with custom output transformers","source":"Sweetwater H2 Audio 0011 Stereo listing","confidence":0.9},{"key":"load_drive","label":"Load drive","value":"Can drive a 600 ohm load up to 25 dB before clipping","display":"Can drive a 600 ohm load up to 25 dB before clipping","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9},{"key":"connectors","label":"Connectors","value":"Analog XLR inputs and outputs","display":"Analog XLR inputs and outputs","source":"Vintage King H2 Audio Helios 0011\/Stereo listing","confidence":0.9}]}]},
  "connectivity": ["xlr"],
  "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": "Engineers wanting two channels of Helios 2128-style preamp and inductor EQ in a modern rack unit for stereo sources, drum overheads, guitars, vocals or line-level analog color.",
    "who_should_skip": "Users needing transparent clean gain, digital I\/O, recall\/automation, parametric EQ, or more than two preamp channels in the same rack space.",
    "fit_notes": "The 0011\/Stereo is a 2U analog rack processor with XLR I\/O; gain and EQ are stepped\/switch-based, making stereo settings easier to repeat manually.",
    "watchouts": "Black finish appears in the input catalog, but reviewed public pages verified the base MFR# 0011\/Stereo and did not expose a finish-specific MPN, GTIN, weight or rack depth.",
    "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": "0011 Stereo Black is a recording and studio product represented by 1 current Canadian retailer offer, starting at 5665.00 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": "H2 AUDIO HELIOS 0011\/STEREO. visible colors: black, red, green, blue. visible controls: knobs, switch, button. panel text: MIC GAIN; BASS Hz; MID kHz; 10 kHz; BASS GAIN; MID GAIN; PRE O\/P; LINE MIC -20; 48V; EQ CUT; PHASE; FILTER.",
    "intent_terms": ["studio","home_recording","content_creation","signal_chain","0011 Stereo Black","H2 AUDIO","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:\/\/vintageking.com\/h2-audio-helios-0011-stereo-preamp-eq","method":"gear_universe_read_model","fetched":"2026-07-21"}}
  },
  "related": {
    "similar_item_ids": [],
    "comparison_reasons": ["source_count:1","lane:studio","verified retail listing_reference"]
}
}