Audio Database
RA-211
Commentary

This is a pre-main amplifier with performance and usability condensed in a compact size.

Silicon transistor is used.

Two pairs of speakers can be connected.

Model Rating
Type Pre-main amplifier
Power Amplifier Unit
Music power 29W (4 Ω)
26W (8 Ω)
Effective power 12W/12W (8 Ω)
9.5W + 9.5W (8 Ω)
Harmonic distortion factor (1 kHz) 0.15% (8W output)
Output band characteristic 15 Hz to 45 kHz -3dB
Damping factor 30 (8 Ω)
Preamplifier Section
S/N Phono:65dB
Aux:70dB
Input Sensitivity / Impedance Phono1 : 2mV/45k Ω
Phono2 : 86mV/95k Ω
Aux, Tuner : 150mV/85k Ω
Tape in : 230mV/15k Ω
Loudness control + 10 dB at 50 Hz, + 4 dB at 10 kHz
Tone control Bass : ± 10 dB (50 Hz)
Treble : ± 10 dB (10 kHz)
<General>
Semiconductor used Transistor : 20
Diode : 3 pcs
External dimensions Width 320x Height 110x Depth 210 mm
Weight 3.0kg