Miracle! Fully restored and maintained in perfect condition! Sansui Pre-Main Amplifier AU-607X Home Audio Amplifiers

Miracle! Fully restored and serviced! Fully functional and in excellent condition! This is the Sansui pre-main amplifier AU-607X.

The appearance is miraculously very beautiful.
In terms of operation, I have confirmed the sound output from each output.
The sound is coming out equally from both left and right, with no distortion in sound quality.
It delivers the delicate and soft sound characteristic of Sansui.
Maintenance performed by audio specialists includes replacing faulty parts, volume replacement, and disassembly and cleaning/alcohol cleaning of switches.
It is in very good condition.

Model Specifications

Effective output 90W + 90W (8Ω, 10Hz-20kHz, THD 0.003%)
90W + 90W (8Ω, 1kHz, THD 0.002%)
Total harmonic distortion (10Hz-20kHz, effective output) 0.003% or less (8Ω)
Intermodulation distortion rate (60Hz:7kHz=4:1, SMPTE) 0.003% or less (8Ω)
Output bandwidth (IHF, both ch operation, THD 0.02%) 5Hz-70kHz (8Ω)
Damping factor (new IHF, 20Hz-20kHz) 100 (8Ω)
Frequency response (1W) DC-300kHz +0 -3dB
Envelope distortion measured limit below TIM distortion (Sawtooth method)
Measurement limit below slew rate ±180V/μsec (8Ω)
Rise time 0.8μsec

Input sensitivity/input impedance (1kHz) Phono1, 2 MM: 2.5mV/47kΩ
Phono1, 2 MC: 120μV/3-40Ω
Tuner, Aux/DA, Tape/PCM play1, 2: 250mV/27kΩ Phono
Maximum allowable input (1kHz, THD 0.01%) MM: 200mV
MC: 10mV, TRANS system
Output level/impedance (1kHz) Tape rec (PIN): 250mV (47kΩ) / 600Ω
Total harmonic distortion (20Hz-20kHz, 5V output) Phono1, 2 MM: 0.005% or less
Phono1, 2 MC: TRANS system RIAA
Deviation (MM, Rec out) 20Hz-300kHz ±0.2dB
SN ratio (A network, short circuit) Phono1, 2 MM: 88dB or more
Phono1, 2 MC: 79dB
Rated power consumption (Electric Appliance Control Law) 220W
Dimensions width 460mm x height 160mm x depth 404mm
Weight 13.5kg

OA-604