Yamaha B-2 Value & Price History
As of 2026-09-21, a Yamaha B-2 has a market value at around $2,300, parts units around $790. Based on 18 estimated sales.
Is a parts unit worth buying?
The $790 parts price is $910 less than the $1,700 working asking price — a 54% 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 $910 gap here makes repair financially reasonable if the amp is confirmed repairable.
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 44% over the last 45 days ($3,050 → $1,700).
View as table
| Date | Asking | Restored | Sold |
|---|---|---|---|
| 2026-08-08 | $3,050 | $6,499 | — |
| 2026-08-25 | $1,700 | — | — |
| 2026-08-28 | $1,700 | — | — |
| 2026-08-31 | $1,700 | — | $199 |
| 2026-09-03 | $1,700 | — | $199 |
| 2026-09-06 | $1,700 | — | $199 |
| 2026-09-09 | — | — | $199 |
| 2026-09-12 | — | — | $199 |
| 2026-09-15 | $1,700 | — | $199 |
| 2026-09-18 | $1,700 | — | $199 |
| 2026-09-21 | $1,700 | — | $2,300 |
Daily trimmed medians from qualifying eBay listings; days without a fresh sync are not plotted.
Specifications
| Years produced | 1977–1980 |
| Type | Amplifier |
| Brand | Yamaha |
| Original MSRP | 1,000 (1977) |
| Inflation-adjusted | ~$5,050 today |
| Market value (sold) | $2,300 |
| Currently listed (asking) | $1,700 |
| Value vs MSRP | +70% |
Buying notes
Yamaha Natural Sound power amplifier. Check both channels produce output at matched levels. Recap $220-340. Good Yamaha build quality. Verify the protection relay cycles correctly on power-up before connecting speakers.
Parts & supplies
Common maintenance items for the Yamaha B-2. eBay links are model-specific searches; Amazon links are for generic supplies that work across most equipment.
- Yamaha B-2 capacitor recap kit on eBay →
- Yamaha B-2 replacement knobs on eBay →
- Fuses for the Yamaha B-2 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
- Yamaha A-S701 $850
- Yamaha A-S801 $900
- Yamaha CA-2010 $475
Current listings
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