Sony TA-N55ES Value & Price History
As of 2026-09-21, a Sony TA-N55ES has a market value at around $345, parts units around $145. Based on 464 estimated sales.
Is a parts unit worth buying?
The $145 parts price is $155 less than the $300 working asking price — a 52% gap. Whether that gap covers the cost of repair depends on what's wrong.
What "for parts" usually means for a amplifier: Integrated amplifiers listed for parts commonly have one dead channel, blown output stage, or failed power supply caps. Sometimes it's as simple as a bad speaker relay.
When it pencils out: Output stage repair runs $100–300 depending on whether replacements for the output transistors exist. A full service is $200–400. The $155 gap here is tight — only pursue if you have a specific diagnosis and repair quote in hand.
When to walk away: An amp with a blown transformer or no available output transistor replacements is a parts donor, not a restoration candidate. Ask the seller what failed and whether any repair was attempted.
DIY vs shop: Speaker relay cleaning and fuse replacement are accessible DIY tasks. Anything touching the output stage needs a proper bench setup. Full repair cost context: what vintage stereo repair actually costs.
Price history
Asking median is down 14% over the last 45 days ($350 → $300).
View as table
| Date | Asking | Restored | Sold |
|---|---|---|---|
| 2026-08-08 | $350 | — | — |
| 2026-08-26 | $300 | — | — |
| 2026-08-30 | $300 | — | $350 |
| 2026-09-03 | $299.99 | — | $350 |
| 2026-09-07 | $300 | — | $350 |
| 2026-09-11 | $299.99 | — | $350 |
| 2026-09-15 | $299.99 | — | $350 |
| 2026-09-19 | $299.99 | — | $345 |
| 2026-09-21 | $300 | — | $345 |
Daily trimmed medians from qualifying eBay listings; days without a fresh sync are not plotted.
Specifications
| Years produced | 1990–1994 |
| Type | Amplifier |
| Brand | Sony |
| Original MSRP | 500 (1990) |
| Inflation-adjusted | ~$1,200 today |
| Market value (sold) | $345 |
| Currently listed (asking) | $300 |
| Value vs MSRP | -40% |
Buying notes
Sony ES series power amplifier. Good ES build quality. Check both channels produce output at matched levels. Verify the protection relay cycles correctly on power-up. Recap $200-300. Sony ES equipment is undervalued relative to quality.
Parts & supplies
Common maintenance items for the Sony TA-N55ES. eBay links are model-specific searches; Amazon links are for generic supplies that work across most equipment.
- Sony TA-N55ES capacitor recap kit on eBay →
- Sony TA-N55ES replacement knobs on eBay →
- Fuses for the Sony TA-N55ES on eBay →
- DeoxIT D5 — cleans oxidized contacts, quiets scratchy pots on Amazon →
- Multimeter — check DC offset before connecting speakers on Amazon →
- Speaker wire 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 TA-F444ES $25
- Sony TA-F555ES $35
- Sony TA-F808ES $350
Current listings
See all on eBay →-
Sony TA-N55ES ES Stereo Power Amplifier Tested Working Vintage Hi-Fi$349.99
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Sony TA-N55ES Stereo Power Amplifier Es Series$250
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SONY TA-N55ES STEREO AMPLIFIER 110W Per Channel (8ohm) or 300W Mono$250
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Sony TA-N55ES Stereo Power Amplifier$599
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Sony Stereo Power Amplifier TA-N55ES Fully Functional$274.99
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SONY TA-N55ES Stereo Power Amplifier Amp ES Series$345
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