Turntable Details
Drive
Belt
Motor
AC
Wow & Flutter %
0.05
Rumble [dB]
-65
Speed
Dimensions [mm]
Platter Material
Platter Diameter [mm]
300
Total Weight [kg]
Tonearm
Year Built
5.90
J-shaped
Platter Weight [kg]
Plinth Material
Price
Additional information
The Akai AP-B20 is a semi-automatic, 2-speed belt-drive turntable produced in Japan around 1980–1981. It is known for its solid construction and reliable performance.
Technical Overview
Platter and Drive:
300 mm aluminum alloy die-cast platter designed for smooth rotation and low resonance.
Belt drive system.
Motor: 4-pole synchronous motor.
Speeds supported: 33⅓ and 45 rpm.
Wow and flutter: 0.05%.
Rumble: 65 dB.
Tonearm:
Static balanced tonearm with inside force canceller (anti-skating).
Effective length: 220 mm.
Overhang: 15 mm.
Removable headshell allowing cartridge upgrades.
Construction and Dimensions:
Dimensions: 440 mm (W) x 135 mm (H) x 355 mm (D).
Weight: 5.9 kg.
Sturdy plinth construction, often with a woodgrain or black finish.
Includes a dust cover.
Additional Features:
Semi-automatic operation with auto-return tonearm.
Known for clear and reliable sound, especially when fitted with quality cartridges like Audio-Technica AT series.
Suitable for casual and vintage vinyl listening.
Some users report minor speed adjustment can be done via internal potentiometer.
Replacement parts such as belts, stylus, and hinges are available from various sources.