Technics SL-B20 (1982)
A belt-drive automatic turntable from Technics with pitch adjustment and auto-return.
Overview
The Technics SL-B20 is an automatic turntable made in 1982. It is belt drive, with a frequency generator servo to keep the speed steady. It plays 33.3 and 45 RPM records and returns the arm on its own when the record ends. It comes with a P-mount cartridge, and the Audio-Technica AT112EP is one example found installed. There is also a pitch adjustment for tuning speed, which users like for keeping playback consistent.
Specifications
| Drive type | Belt Drive |
| Speeds | 33.3 and 45rpm |
| Features | Pitch adjustment, Auto Return |
| Cartridge mount | P-mount |
| Included cartridge | Audio-Technica model AT112EP |
Design
The frequency generator servo regulates motor speed, which helps playback stay stable. Being an automatic belt-drive deck, it lowers the tonearm at the start of the record and lifts it back to rest when playback ends.
Context
One long-term owner reported using the SL-B20 for 40 years without issues. He rated it 10/10 and called it "a great turntable." Online discussions describe it as one of the best turntables for beginners. It is still listed on second-hand markets like HiFi Shark and eBay, sometimes noted as rare.
Market
Common maintenance means replacing the belt and stylus over time. Example listings show units sold as working, and some are labeled as rare collectible items.
eBay Listings
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Related Models
- Technics EAH-220
- Technics SL-110
- Technics SL-1200 Mk2
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- Technics SL-1210
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