Vtg Sony Stereo Cassette Deck TC-K679ES 3-Head Works
Up for sale: a vintage Sony TC-K679ES 3-head stereo cassette deck. This unit powers on, lights up, buttons and knobs all function. I have not tested it with a tape or speakers, so this is being sold in “working power-on” condition.
Features & Specs
Here are the technical specifications & features of the TC-K679ES, gathered from Sony manuals and reputable audio sources:
| Spec | Details |
|---|---|
| Type | 3-head, single compact stereo cassette deck |
| Head System | Combination record/playback head, separate erase head |
| Transport Mechanism | Dual capstan (closed loop) with 3 motors (reel, capstan, assist) |
| Tape Types Supported | Type I (Normal), CrO2, Metal |
| Noise Reduction | Dolby B and Dolby C Noise Reduction |
| Headroom Extension | HX PRO (Sony’s dynamic bias/auto-biasing system) |
| Frequency Response | ~ 20 Hz to 21 kHz (with metal tape) |
| Signal-to-Noise Ratio | 75 dB (Dolby C) |
| Wow & Flutter | ~0.05 % |
| Total Harmonic Distortion (THD) | ~1.5 % |
| Inputs / Outputs | RCA line in/out; also headphone jack |
| Power Consumption | ~19 W |
| Size / Weight | 430 × 123 × 300 mm (WxHxD); ~4.9 kg |
| Era / Made In | Early-1990s; Made in Japan |
Condition
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Powers on, lights up, buttons & knobs respond.
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Not tested with cassette or speakers, so I cannot guarantee playback performance.
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Cosmetically, may show typical wear for its age — minor scuffs, surface wear — please see photos for best detail.
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No known major damage (that I can see), but since playback hasn’t been tested, buyer should expect possible calibration, cleaning, and belt service may be needed depending on how it was stored/used before.
- Light scuffs and scrapes on the body.
- Please carefully review the photos, as they are an extension of this description.
Seller-paid returns are offered due to limited testing.
Why Buy This Deck
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Excellent unit for cassette lovers: 3-head decks allow for better equalization and monitoring of record/playback head separately.
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Dual capstan, closed-loop transport helps with tape stability (less wow & flutter).
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HX Pro + Dolby B/C gives flexibility and higher fidelity especially with high-bias and metal tapes.
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Part of Sony’s ES (Elevated Standard) line: known for build quality, good components, excellent machined transport parts. This model is well regarded among vintage cassette deck collectors.
What Buyer Should Know
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Because I haven’t tested it with a tape or load, I cannot guarantee sound quality — things like heads may be worn, belts may need replacement, calibration may be off.
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Shipping will be done with care due to delicate transport mechanisms.
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Returns only if unit fails to power on or function as described (power on, buttons, lights, knobs).
Reasonable offers are welcomed and will be considered.
Shipping:
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Weight: 10 lbs. 9.1 oz.
~ Dimensions:
17.25 x 11 x 5"
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