Sony TC-K690 Value & Price History
As of 2026-09-21, a Sony TC-K690 has a market value at around $185. Based on 53 estimated sales.
Market value
$185
Typical range $69–$500 · based on 53 recent sales
Estimated sale prices · 53 events · updated today · how we compute this
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Original retail (1990)$900 · ~$2,200 today
Specifications
| Years produced | 1990–1993 |
| Type | Cassette Deck |
| Brand | Sony |
| Original MSRP | 900 (1990) |
| Inflation-adjusted | ~$2,200 today |
| Market value (sold) | $185 |
Parts & supplies
Common maintenance items for the Sony TC-K690. eBay links are model-specific searches; Amazon links are for generic supplies that work across most equipment.
- Sony TC-K690 belt and pinch roller kit on eBay →
- Sony TC-K690 pinch roller on eBay →
- TDK SA90 — Type II (high bias), works in any deck with a Type II setting on Amazon →
- Maxell UR blank cassette — Type I, reliable everyday tape on Amazon →
- Cassette head cleaner — wet-type for capstan and heads on Amazon →
- 99% isopropyl for transport cleaning (avoid lower concentrations) on Amazon →
- Cassette head demagnetizer — reduces noise and distortion over time on Amazon →
Purchases through these links may earn StereoWorth a small commission at no extra cost to you. See our affiliate disclosure. Repair budgeting: what vintage stereo repair actually costs.
Comparable models
- Sony TC-K909 $185
- Sony TC-K770ES $300
- Sony TC-K81 $160
Current listings
Live listing data loads after the next price sync.
Search Sony TC-K690 on eBay → Search Sony TC-K690 on Reverb →Track this model
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