Vacuum tube premain amplifier of unknown manufacturer. It is shaped like the Sun Valley VP-3000SE, and has been carefully made. You can enjoy the strength unique to 300B and the natural sound of a vacuum tube with good thickness. There are paint peeling and small scratches on the exterior (Satoshi Yoneshima)
Maintenance information: 2021.2.21 maintained (power switch replacement, right ch cathode condenser replacement, left ch vacuum tube replacement, left ch vacuum tube socket replacement, power primary circuit 5A fuse replacement, Normal power tube current value determined by continuous operation test after parts replacement, non-distortion maximum output operation confirmed: 16.8W/8Ω However, measured at Rch* Residual noise 1.6mV Damping factor DF: 6.7 (at 8Ω) Output bandwidth: 5Hz to 24Khz)
Accessories: power cord
Main specifications: 300B ✕ 4 6SN7 ✕ 4 W388 ✕ H205 ✕ D365mm 23.9kg