Replace 23 transistors, 19 capacitors, 21 diodes, etc., and disassemble the rotary switch and slide switch for thorough maintenance and refresh! An impressive Sony power amplifier with clear high frequencies and deep mid-low frequencies. The powerful and rich sound seems to go well with classical and acoustic songs. There is speckled discoloration on part of the front panel (Kojima Yosuke)
Maintenance information: 2026.6.5 Maintained (23 transistors, 19 capacitors, 21 diodes, semi-fixed resistors, spark killers, micro SW, fuses, heat dissipation sheets, and lamps have been replaced. The rotary SW and slide SW were completely disassembled and cleaned and greased. RCA and SP terminals have been cleaned. The offset and idle current have been adjusted. Input/output waveform check, left and right balance check, load test (1kHz sine wave, at 8Ω load: 110W+110W), comprehensive operation tested)
Accessories: none
Main specifications: 110W+110W (8Ω) W400 x H149 x D323 mm 13.5 kg