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The TRX-1 preamp is equipped with a 4-band equalizer that can finely control the sound field by removing the TRV-4SE phono equalizer. This makes it possible to create an ideal audio room by freely adjusting the reverberation characteristics of the room. By adjusting the low-frequency characteristics, which tend to be insufficient, especially at night, correction at low volumes is now possible. In addition, the remote control function, which has been requested many times before, is equipped with volume adjustment, input switching, mute, ON / OFF of the 4 band equalizer, and left and right balance can be adjusted on the front panel. For the rectifier circuit, we have adopted a Western Electric direct heat rectifier tube 274B, which has been well-established for a long time, aiming for attractive music reproduction.

Circuit systemPre amplifier
Tubes12AX7(ECC83)*4 , 274B(5U4G)*1
Frequency response10Hz-100kHz(-1,-2dB)
S/N ratio96dB
Input sensitivity250mV
Input impedance100k ohm
Output impedance6k ohm
Input terminalsRCA unbalanced*5(LINE1-5)
Output terminalsRCA unbalanced*3
Equalizer control frequency150 , 400 , 2k , 10kHz±6dB
Equipped componentsKOA high precision carbon resistors (Japan)
Power consumption30W
AccessoriesTube cover , Wooden side plates , Remote control
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