The contact system has been thoroughly maintained! A pre-main amplifier that can operate 4 channels simultaneously. The mixing function and channel settings for the 3 microphone inputs can be individually controlled, and the volume of each channel can be individually controlled. The exterior has small scratches and paint peeling on the corner of the front panel top plate (Oikawa Tetsuji)
Maintenance information: 2025.5.14 Maintained (output relay replaced. INPUT selector disassembly contact polishing. Repair anything else that can be disassembled by disassembling it. Since the main volume is special, it cannot be disassembled and the contacts are cleaned. (The panel lamp on this unit has been modified and the white LED is attached, but leave it as it is)
Accessories: none
Main specifications: 4 channel premain amplifier, 2 CH operation, 100 W x 2 (20 Hz to 20 kHz, 8 Ω), 4 CH operation, 50 W x 4 (20 Hz to 20 kHz, 8 ohms), W474 x H150 x D370 mm, 15.5 kg