Turntable Details
Drive
Direct
Motor
Wow & Flutter %
Rumble [dB]
Speed
Dimensions [mm]
Platter Material
Platter Diameter [mm]
Total Weight [kg]
Tonearm
Year Built
Platter Weight [kg]
Plinth Material
Price
Additional information
The Sharp Optonica RP-9100 is a high-end, fully automatic direct-drive turntable produced between 1980 and 1982 in Japan. It features advanced quartz-locked motor control and a suite of sophisticated functions aimed at audiophiles seeking both precision and convenience.
Technical Overview
Drive System: Quartz-controlled direct drive with a coreless DC motor, ensuring highly stable platter rotation.
Speeds: Supports 33⅓ and 45 RPM with pitch control adjustable ±4%, separately for each speed.
Speed Stability: Synchronous speed variations of ±0.028% WRMS and ±0.045% DIN, providing excellent speed accuracy.
Platter: 31 cm aluminum die-cast platter designed for low resonance and stable rotation.
Wow and Flutter: Approximately 0.028% WRMS.
Rumble Noise Ratio: 68 dB, ensuring low background noise.
Tonearm: Statically balanced tubular tonearm with an APMS (Automatic Programmable Music Selector) sensor for precise track detection and programming.
Operation: Fully automatic with features including:
Automatic record size detection.
Programmable track sequence playback (via APMS).
Repeat function.
Remote control operation.
Digital speed display.Dimensions: 480 mm (W) x 135 mm (H) x 440 mm (D).
Weight: Approximately 11 kg.
Power Consumption: Around 20 watts.
Output: Standard phono output for integration with hi-fi systems.
Special Features:
Remote controllable functions.
Soft-touch front panel controls.
Advanced microprocessor control for precise operation.