{
  "schema_version": 1,
  "projection": "envoy-agent-v1",
  "identity": {
    "title": "2 Shure SM57 Cardioid Dynamic Microphones 1984 - Present - Black",
    "brand": "Shure",
    "model": null,
    "mpn": null,
    "gtins": null,
    "handle": "gm-shure-sm57-cardioid-dynamic-microphones-2-shure-sm57-cardioid-dynamic-3d907f8e",
    "url": "https://envoy-music.myshopify.com/products/gm-shure-sm57-cardioid-dynamic-microphones-2-shure-sm57-cardioid-dynamic-3d907f8e",
    "catalog_product_id": "product_b0f208d43d907f8e",
    "lane": "studio",
    "product_object": "microphones"
  },
  "offer": {
    "price": 191.8,
    "currency": "CAD",
    "available": true,
    "condition": "Excellent",
    "price_band": "mid",
    "source_verified_at": null
  },
  "specifications": {"category":"Pro Audio","subcategory":"Microphones","category_path":"Pro Audio \/ Microphones","groups":[{"id":"core","label":"Microphone","fields":[{"key":"mic_type","label":"Type","value":"dynamic","unit":"","display":"Dynamic (moving coil)","filterable":true,"source":"https:\/\/www.shure.com\/en-US\/products\/microphones\/sm57","confidence":0.99},{"key":"polar_pattern","label":"Polar pattern","value":"cardioid","unit":"","display":"Cardioid","filterable":true,"source":"https:\/\/www.shure.com\/en-US\/products\/microphones\/sm57","confidence":0.99},{"key":"frequency_response","label":"Frequency response","value":"40-15000","unit":"Hz","display":"40 Hz – 15 kHz","filterable":false,"source":"https:\/\/www.shure.com\/en-US\/products\/microphones\/sm57","confidence":0.98},{"key":"sensitivity","label":"Sensitivity","value":-54.5,"unit":"dBV\/Pa","display":"-54.5 dBV\/Pa (1.9 mV) @ 1 kHz","filterable":false,"source":"https:\/\/www.shure.com\/en-US\/products\/microphones\/sm57","confidence":0.97},{"key":"output_impedance","label":"Output impedance","value":310,"unit":"ohm","display":"310 Ω","filterable":false,"source":"https:\/\/www.shure.com\/en-US\/products\/microphones\/sm57","confidence":0.98},{"key":"connector","label":"Connector","value":"XLR","unit":"","display":"XLR (3-pin)","filterable":false,"source":"https:\/\/www.shure.com\/en-US\/products\/microphones\/sm57","confidence":0.98},{"key":"phantom_required","label":"Phantom power required","value":false,"unit":"","display":"No","filterable":false,"source":"https:\/\/www.shure.com\/en-US\/products\/microphones\/sm57","confidence":0.99}]}]},
  "connectivity": ["xlr"],
  "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 players who have outgrown their first setup and need a meaningful step up.\n\nWho it is for: Shoppers who already understand the role of this pro audio and want a more deliberate purchase.\n\nWho should skip it: Skip it if you are still figuring out the basics and need the simplest possible first purchase path.",
    "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": "2 Shure SM57 Cardioid Dynamic Microphones 1984 - Present - Black. Shure. SM57 Cardioid Dynamic Microphones. Pro Audio. Pro Audio \/ Microphones. available from reverb. price range 140 USD. condition Excellent. Selling my 2 SM57 Cardioid Dynamic Microphones. excellent condition. Only used twice.. 2 Shure SM57 Cardioid Dynamic Microphones 1984 - Present - Black. Shure. SM57 Cardioid Dynamic Microphones. Black. Excellent. Pro Audio. Pro Audio \/ Microphones. Selling my 2 SM57 Cardioid Dynamic Microphones. excellent condition. Only used twice.. Christopher's Gear Outlet. Solvang, CA, United States. tags source:reverb family:pro_audio listing_status:live brand:shure model:sm57_cardioid_dynamic_microphones category:pro_audio_microphones price_band:entry segment:intermediate condition:excellent has:photos",
    "agent_summary": "Shure SM57 Cardioid Dynamic Microphones is a aimed at intermediate players pro audio listing with marketplace-sourced data. 2 Shure SM57 Cardioid Dynamic Microphones 1984 - Present - Black currently sits around 140 USD. Selling my 2 SM57 Cardioid Dynamic Microphones. Marketplace data is richer on listing context, but it needs more buyer verification. Positioned as a realistic step-up option for players leaving starter gear. Marketplace listing quality varies by seller, so condition and included items still need verification.",
    "intent_terms": ["2 Shure SM57 Cardioid Dynamic Microphones 1984 - Present - Black","Shure","SM57 Cardioid Dynamic Microphones","Pro Audio","Pro Audio \/ Microphones","brand:shure","category:pro_audio_microphones","condition:excellent","family:pro_audio","has:photos","listing_status:live","model:sm57_cardioid_dynamic_microphones","price_band:entry","segment:intermediate","source:reverb","brand shure","category pro audio microphones","condition excellent","family pro audio","has photos","listing status live","model sm57 cardioid dynamic microphones","price band entry","segment intermediate","source reverb","home-recording","content-creation","practice","starter-rig","live-performance","tone-shaping","signal-chain","Christopher's Gear Outlet","Best suited to players who have outgrown their first setup and need a meaningful step up.","Shoppers who already understand the role of this pro audio and want a more deliberate purchase."],
    "use_cases": ["studio-recording","live-performance","home-recording"],
    "skill_level": "any"
  },
  "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": {"specifications":{"source_url":"https:\/\/www.shure.com\/en-US\/products\/microphones\/sm57","method":"manufacturer_datasheet","fetched":"2026-07-19"}}
  },
  "related": {
    "similar_item_ids": ["product_e285a982f7c42948","product_a2a4a1d3ad722169","product_982aba87bf32f29f","product_0b47707fa7c2857f","product_d7b26e4eaa86a617","product_728cf41f8cbaa93a","product_12278df8836bcc1b","product_d999817715bd0554"],
    "comparison_reasons": ["source_count:1","family:Pro Audio","marketplace_only","identity_confidence:0.9"]
,
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}