{
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  "identity": {
    "title": "1978 Korg M-500 SP Micro Preset Monophonic Synthesizer Keyboard - w\/ Case",
    "brand": "Korg",
    "model": null,
    "mpn": null,
    "gtins": null,
    "handle": "gm-korg-m-500-sp-micro-preset-monophonic-synthesizer-keyboard-w-case-1978-fa5bb7fb",
    "url": "https://envoy-music.myshopify.com/products/gm-korg-m-500-sp-micro-preset-monophonic-synthesizer-keyboard-w-case-1978-fa5bb7fb",
    "catalog_product_id": "reverb_listing:95552554",
    "lane": "production",
    "product_object": "analog synths"
  },
  "offer": {
    "price": 1026.13,
    "currency": "CAD",
    "available": true,
    "condition": "Very Good",
    "price_band": "high",
    "source_verified_at": null
  },
  "specifications": {"type":"json","groups":[{"id":"synthesis","label":"Synthesis and controls","fields":[{"key":"voice_architecture","label":"Voice architecture","value":"Monophonic synthesizer","source":"https:\/\/cdn.korg.com\/us\/support\/download\/files\/c13a190705e58e323fd7acac1d607902.pdf?response-content-disposition=inline%3Bfilename%3DM-500_OM_EJ.pdf\u0026response-content-type=application%2Fpdf%3B","confidence":0.9},{"key":"preset_mixing","label":"Preset mixing","value":"Two or more preset select switches can be depressed at the same time to mix preset sounds","source":"https:\/\/cdn.korg.com\/us\/support\/download\/files\/c13a190705e58e323fd7acac1d607902.pdf?response-content-disposition=inline%3Bfilename%3DM-500_OM_EJ.pdf\u0026response-content-type=application%2Fpdf%3B","confidence":0.94},{"key":"tuning_reference","label":"Tuning reference","value":"Tuning knob position 0 corresponds to A=440 Hz","source":"https:\/\/cdn.korg.com\/us\/support\/download\/files\/c13a190705e58e323fd7acac1d607902.pdf?response-content-disposition=inline%3Bfilename%3DM-500_OM_EJ.pdf\u0026response-content-type=application%2Fpdf%3B","confidence":0.92},{"key":"sp_feature","label":"SP version feature","value":"M-500SP version is documented with built-in amplifier and speaker","source":"https:\/\/cdn.korg.com\/us\/support\/download\/files\/c13a190705e58e323fd7acac1d607902.pdf?response-content-disposition=inline%3Bfilename%3DM-500_OM_EJ.pdf\u0026response-content-type=application%2Fpdf%3B","confidence":0.88}]}]},
  "connectivity": null,
  "power": null,
  "included_items": null,
  "required_accessories": ["keyboard stand","sustain pedal","headphones or amp"],
  "optional_accessories": null,
  "compatibility": null,
  "advisor": {
    "best_for": null,
    "who_should_skip": null,
    "fit_notes": null,
    "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": "1978 Korg M-500 SP Micro Preset Monophonic Synthesizer Keyboard - w\/ Case. Korg. M-500 SP Micro Preset Monophonic Synthesizer Keyboard - w\/ Case. Keyboards and Synths. Keyboards and Synths \/ Synths \/ Analog Synths Keyboards and Synths \/ Synths \/ Keyboard Synths. available from reverb. price range 749 USD. condition Very Good. For your consideration, a 1978 Korg Micro-Preset Synth. It's a blast to play! We're a guitar shop... we specialize in all sorts of vintage guitars, so we don't regularly have synths in-stock. We will occasionally offer one for sale, but only if it is COOL. This one definitely lands in the COOL zone. We've tried our best to represent it with the same scrutiny and perspective that has made us successful in the vintage guitar world. Please let us know if you have any questions, and we'll do our best to answer. This one came to us from the home of a multi-instrumentalist and collector of all sorts of oddball musical tools. It has some minor wear and tear, but nothing that seems abnormal on an instrument of this vintage. Please see photos for cosmetic condition. We peeked inside, and it appears to be in original condition with no modifications and no signs of heat, rodent, or moisture damage. All keys, jacks, knobs, buttons, and faders work. Included are what appears to be two complete sets of original tone template overlay cards and manuals. Also included is a wooden hardshell case. The case interior consists of pieces of styrofoam. We will add proper packing materials inside the case upon shipping, don't worry! Weight: 11lbs 12oz. 1978 Korg M-500 SP Micro Preset Monophonic Synthesizer Keyboard - w\/ Case. Korg. M-500 SP Micro Preset Monophonic Synthesizer Keyboard - w\/ Case. Synth. Very Good. Keyboards and Synths. Keyboards and Synths \/ Synths \/ Analog Synths Keyboards and Synths \/ Synths \/ Keyboard Synths. For your consideration, a 1978 Korg Micro-Preset Synth. It's a blast to play! We're a guitar shop... we specialize in all sorts of vintage guitars, so we don't regularly have synths in-stock. We will occasionally offer one for sale, but only if it is COOL. This one definitely lands in the COOL zone. We've tried our best to represent it with the same scrutiny and perspective that has made us successful in the vintage guitar world. Please let us know if you have any questions, and we'll do our best to answer. This one came to us from the home of a multi-instrumentalist and collector of all sorts of oddball musical tools. It has some minor wear and tear, but nothing that seems abnormal on an instrument of this vintage. Please see photos for cosmetic condition. We peeked inside, and it appears to be in original condition with no modifications and no signs of heat, rodent, or moisture damage. All keys, jacks, knobs, buttons, and faders work. Included are what appears to be two complete sets of original tone template overlay cards and manuals. Also included is a wooden hardshell case. The case interior consists of pieces of styrofoam. We will add proper packing materials inside the case upon shipping, don't worry! Weight: 11lbs 12oz. Cumberland Guitars. Jamestown, KY, United States. tags source:reverb family:keyboards_and_synths listing_status:live brand:korg model:m_500_sp_micro_preset_monophonic_synthesizer_keyboard_w_case category:keyboards_and_synths_synths_analog_synths category:keyboards_and_synths_synths_keyboard_synths price_band:mid segment:intermediate condition:very_good has:photos",
    "agent_summary": "Korg M-500 SP Micro Preset Monophonic Synthesizer Keyboard - w\/ Case is a aimed at intermediate players keyboards and synths listing with marketplace-sourced data. 1978 Korg M-500 SP Micro Preset Monophonic Synthesizer Keyboard - w\/ Case currently sits around 749 USD. For your consideration, a 1978 Korg Micro-Preset Synth. 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": ["1978 Korg M-500 SP Micro Preset Monophonic Synthesizer Keyboard - w\/ Case","Korg","M-500 SP Micro Preset Monophonic Synthesizer Keyboard - w\/ Case","Keyboards and Synths","Keyboards and Synths \/ Synths \/ Analog Synths","Keyboards and Synths \/ Synths \/ Keyboard Synths","brand:korg","category:keyboards_and_synths_synths_analog_synths","category:keyboards_and_synths_synths_keyboard_synths","condition:very_good","family:keyboards_and_synths","has:photos","listing_status:live","model:m_500_sp_micro_preset_monophonic_synthesizer_keyboard_w_case","price_band:mid","segment:intermediate","source:reverb","brand korg","category keyboards and synths synths analog synths","category keyboards and synths synths keyboard synths","condition very good","family keyboards and synths","has photos","listing status live","model m 500 sp micro preset monophonic synthesizer keyboard w case","price band mid","segment intermediate","source reverb","live-performance","tone-shaping","Cumberland Guitars","Best suited to players who have outgrown their first setup and need a meaningful step up.","Shoppers who already understand the role of this keyboards and synths and want a more deliberate purchase."],
    "use_cases": ["sound-design","practice","collection"],
    "skill_level": "intermediate"
  },
  "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:\/\/cdn.korg.com\/us\/support\/download\/files\/c13a190705e58e323fd7acac1d607902.pdf?response-content-disposition=inline%3Bfilename%3DM-500_OM_EJ.pdf\u0026response-content-type=application%2Fpdf%3B","method":"gear_universe_read_model","fetched":"2026-07-30"}}
  },
  "related": {
    "similar_item_ids": ["product_788e3f9e47f4e398","product_7b0608bf46eccdd1","product_a933941a0fd32300","product_29ee43d2d786831c","product_e1a5f687996fbeff","product_389f213aec072354","product_3df9e0750fedf4ea","product_3e458627e85216af"],
    "comparison_reasons": ["source_count:1","family:Keyboards and Synths","marketplace_only","identity_confidence:0.9"]
}
}