{
  "schema_version": 1,
  "projection": "envoy-agent-v1",
  "identity": {
    "title": "TELEFUNKEN TF51 Matched Pair — Microphone",
    "brand": "TELEFUNKEN",
    "model": "TF51 Matched Pair",
    "mpn": null,
    "gtins": null,
    "handle": "ca-telefunken-tf51-matched-pair-8c407342fd",
    "url": "https://envoy-music.myshopify.com/products/ca-telefunken-tf51-matched-pair-8c407342fd",
    "catalog_product_id": "catalog:80f9f1ecae4f",
    "lane": "studio",
    "product_object": "large-diaphragm vacuum tube condenser microphone pair"
  },
  "offer": {
    "price": 5615.0,
    "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":"microphone_type","label":"Microphone Type","fields":[{"key":"configuration","label":"Configuration","value":"Frequency- and gain-matched pair of TF51 microphone systems","display":"Frequency- and gain-matched pair of TF51 microphone systems","source":"Telefunken TF51 product page","confidence":0.9},{"key":"type","label":"Type","value":"Large-diaphragm vacuum tube condenser microphone","display":"Large-diaphragm vacuum tube condenser microphone","source":"Telefunken TF51 product page","confidence":0.9},{"key":"polar_patterns","label":"Polar patterns","value":"Cardioid, omnidirectional and figure-8","display":"Cardioid, omnidirectional and figure-8","source":"Telefunken TF51 product page","confidence":0.9},{"key":"power_source","label":"Power source","value":"External power supply","display":"External power supply","source":"Telefunken TF51 product page","confidence":0.9}]},{"id":"capsule_and_electronics","label":"Capsule and Electronics","fields":[{"key":"capsule","label":"Capsule","value":"TK51 edge-terminated large diaphragm","display":"TK51 edge-terminated large diaphragm","source":"Telefunken TF51 product page","confidence":0.9},{"key":"tube","label":"Tube","value":"Telefunken Elektroakustik 6072A","display":"Telefunken Elektroakustik 6072A","source":"Telefunken TF51 product page","confidence":0.9},{"key":"transformer","label":"Transformer","value":"Haufe T31","display":"Haufe T31","source":"Telefunken TF51 product page","confidence":0.9}]},{"id":"audio_performance","label":"Audio Performance","fields":[{"key":"frequency_range","label":"Frequency range","value":"20 Hz to 20 kHz, +\/-3 dB","display":"20 Hz to 20 kHz, +\/-3 dB","source":"Telefunken TF51 product page","confidence":0.9},{"key":"sensitivity","label":"Sensitivity","value":"19 mV\/Pa, +\/-1 dB","display":"19 mV\/Pa, +\/-1 dB","source":"Telefunken TF51 product page","confidence":0.9},{"key":"thd","label":"Thd","value":"Amplifier THD \u003c0.4% at 1 kHz at 1 Pa","display":"Amplifier THD \u003c0.4% at 1 kHz at 1 Pa","source":"Telefunken TF51 product page","confidence":0.9},{"key":"output_impedance","label":"Output impedance","value":"\u003c300 ohm","display":"\u003c300 ohm","source":"Telefunken TF51 product page","confidence":0.9},{"key":"max_spl","label":"Max spl","value":"128 dB SPL at 1% THD","display":"128 dB SPL at 1% THD","source":"Telefunken TF51 product page","confidence":0.9},{"key":"signal_to_noise","label":"Signal to noise","value":"86 dBA","display":"86 dBA","source":"Telefunken TF51 product page","confidence":0.9},{"key":"self_noise","label":"Self noise","value":"8 dBA amplifier self-noise","display":"8 dBA amplifier self-noise","source":"Telefunken TF51 product page","confidence":0.9}]},{"id":"included_accessories","label":"Included Accessories","fields":[{"key":"matched_pair_includes","label":"Matched pair includes","value":"2 matched TF51 microphones, 2 M 903 power supplies, 2 M 803 7 m tube mic cables, 2 ZC03 zipper cases, 2 M 703 shock mounts, 2 M 782 stand mounts and 2 MS01 mic sleeves","display":"2 matched TF51 microphones, 2 M 903 power supplies, 2 M 803 7 m tube mic cables, 2 ZC03 zipper cases, 2 M 703 shock mounts, 2 M 782 stand mounts and 2 MS01 mic sleeves","source":"Telefunken TF51 product page","confidence":0.9}]},{"id":"physical","label":"Physical","fields":[{"key":"dimensions","label":"Dimensions","value":"200 mm length x 46 mm diameter per microphone","display":"200 mm length x 46 mm diameter per microphone","source":"Telefunken TF51 product page","confidence":0.9},{"key":"weight","label":"Weight","value":"615 g per microphone","display":"615 g per microphone","source":"Telefunken TF51 product page","confidence":0.9}]}]},
  "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": "Stereo recording of vocals, acoustic instruments, piano, drum overheads or rooms where a matched multi-pattern tube pair is needed.",
    "who_should_skip": "Users needing phantom-powered FET condensers, compact live mics, very high-SPL close drum use beyond the stated SPL rating, or a single shared stereo power supply package instead of two individual supplies.",
    "fit_notes": "The matched-pair package uses two independent tube microphone systems, so allow space for two external power supplies and two 7 m tube mic cables.",
    "watchouts": "Telefunken lists SKU SYTM-093 on the TF51 page, but a separate GTIN was not exposed in accessible product data.",
    "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": "TF51 Matched Pair is a recording and studio product represented by 1 current Canadian retailer offer, starting at 5615.00 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": "Telefunken TF51 Matched Pair comprises frequency- and gain-matched microphone systems.",
    "intent_terms": ["studio","home_recording","content_creation","signal_chain","TF51 Matched Pair","TELEFUNKEN","Condensor Microphones","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.telefunken-elektroakustik.com\/product\/tf51\/","method":"gear_universe_read_model","fetched":"2026-07-21"}}
  },
  "related": {
    "similar_item_ids": [],
    "comparison_reasons": ["source_count:1","lane:studio","verified retail listing_reference"]
}
}