Detailed maintenance has been carried out, such as 43 capacitors, 4 lamps, and 6 semi-fixed resistors, replaced, and disassembled and cleaned for each volume and switch. A powerful vintage amplifier that is clear and strong. With this brush-up, the sharpness of the stand up and the firmness of the sound have been clearly revived, and even the realistic sound with a piano touch can be heard, and unlike modern models, it clearly shows the expression and musical expression of the source. There are scars, dullness, etc. appropriate to the model year (Oikawa Tetsuji)
Maintenance information: 2026.3.23 Maintained (power switch, 4 volumes replaced. Disassemble and clean the front transfer switch, rear transfer switch, and speaker output relay. Volume cleaning, electrolysis, tantalum capacitors, semi-fixed resistors, lamp replacement, panel, housing, RCA terminal cleaning, readjusted parts, aging test)
Accessories: copy of instruction manual
Main specifications: output 100W+100W (8Ω) SNR 115dB W436 x H151 x D370 mm 26 kg