Technics SL-B3 (1979–1980)
A fully automatic belt-drive turntable from Technics, produced around 1979–1980, featuring servo-controlled speed regulation and a 304mm aluminium alloy platter.
Overview
The Technics SL-B3 is a fully automatic belt-drive turntable made by Technics around 1979–1980. It uses a servo motor for speed control and features a 304mm aluminium alloy platter. The turntable supports 33 and 45 rpm playback and includes a static balance tonearm. It was designed for hands-free operation, with automatic tonearm movement and speed selection.
Specifications
| Type | fully automatic |
| Drive method | belt-drive |
| Platter | 304mm aluminium alloy |
| Speeds | 33 and 45rpm |
| Motor | servo |
| Tonearm | static balance |
Design
The SL-B3 incorporates a Frequency Generator Servo system for precise speed control, contributing to its stable playback performance.
Market
Some units have been sold for $80 or 388лв, with reports of full functionality after servicing, which may include belt replacement, lubrication, and alignment. Common issues include servo motor malfunctions, automatic tonearm misalignment, and speed instability during playback.
Market Value
┌──────────────────────────────────────────────────────────────────────────┐ │ TECHNICS SL-B3 Apr 2026 │ ├──────────────────────────────────────────────────────────────────────────┤ │ High $275 Latest $125 │ │ Median $177 Trend — │ │ Low $80 Volume ~7/mo │ ├──────────────────────────────────────────────────────────────────────────┤ │ $300 ┤ │ │ │ . │ │ │. │ │ $193 ┤ . │ │ │ . │ │ │ .│ │ │ . │ │ $50 ┤ . │ │ ├─────────────────────────────────────────────────────────────────│ │ vol │█ █ █ █ █ █ █│ │ └─────────────────────────────────────────────────────────────────│ │ 2026-01 2026-02 2026-03│ └──────────────────────────────────────────────────────────────────────────┘
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