Audio Database

W-41
Commentary

This is a stereo pre-main amplifier that utilizes the technology of the trio in the circuit and mechanism.

DC ignition of the vacuum tube is used for the equalizer circuit to prevent hum noise.

Equipped with a tape monitor switch terminal that allows easy recording and playback by connecting a tape recorder.
By using a 3-head tape recorder, recording and playback can be performed simultaneously.

Equipped with left and right independent tone control.

It is equipped with functions such as loudness control and stereo headphone jack.

Model Rating
Type Stereo pre-main amplifier
Output 2 x 20 w maximum
18Wx2 (Unstrained)
Gain MAG, Tape HD : 1.7 mV
AUX, Tuner, Tape Play : 110 mv
Frequency characteristic 20 Hz to 20 kHz (Output 500 mW, within 0.5 dB)
Tone control 50 Hz : + 12 dB to -10dB
10 kHz : + 12 dB to -9dB
Loudness control 50 Hz : + 13 dB, 10 kHz : + 4 dB
Equalizer RIAA
Residual noise (sound maximum
Tone control flat)
MAG, Tape HD : 30 mV
AUX, Tuner, Tape Play : 4 mv
Accessory circuit Loudness control
Equalizer amplifier DC ignition
Tape monitor
Stereo headphone jack
Semiconductor used
Vacuum Tubes (9 pcs) 12AX7 : 5
6BQ5 : 4
Silicon diode 2 pieces
Power supply voltage 100 VAC / 117 V, 50Hz/60Hz
Power consumption 130VA
External dimensions Width 313x Height 126x Depth 252 mm