All switches have been disassembled and the contacts have been polished and maintained! A famous and famous first-generation preamp. The coat is different from modern tones, and the solid sharpness and punchy tone go great with vintage speakers such as JBL. The crunchy sound image and exhilarating sounds are a habit. Serial B4Y497 (Murakoshi Yoichi)
Maintenance information: 2026.3.10 Maintained (panel component dismantled, all switch disassembled contacts, polished contacts, grease applied. Ceiling door shaft cleaning, microphone input jack replacement, cleaning, each input/output operation check) 2015.7.18 maintained (each SW/volume cleaned. Electrolytic/film capacitors, RCA terminals, and heat dissipation sheets replaced. Replace the fuse. Input/output waveform check, sound output test, aging test) 2014/6 manufacturer maintenance (transistor and capacitor replacement in the equalizer circuit, transistor replacement in the tone amplifier, transistor replacement in the filter amplifier, transistor replacement in the headphone amplifier, front, rotary switch, and volume cleaned)
Accessories: power cord, instruction manual (copy)
Main specifications: 3 phono systems (with head amplifier), 3 line systems, 3 tape systems, W445 x H160 x D373 mm, 13.4 kg