Maintained in 2023. After all, the warm, and glossy sound quality is excellent for stringed instruments. It has a soft and vivid sound not found in transistors, making it perfect for listening for long periods of time. In addition to noticeable scuffs and paint peeling on the exterior and transformer area, dullness and a feeling of use can be seen. Serial F0800283 (Murakoshi Yoichi)
Maintenance information: 2023.7.23 maintained (vacuum tube socket block capacitor electrolytic capacitor oil capacitor SP and RCA terminal semi-fixed VR fuse holder replacement load test (8Ω load 1kHz 25W+25W) input/output waveform confirmation sound output check performed gain VOL NFB switching SW disassembly contact refinement to prevent oxidation and sulfation grease coating input/output waveform confirmation distortion load test (1 kHz (25W+25W at sine wave 8Ω load) sound output test)
Accessories: copy of instruction manual
Main specifications: 50CA10 push-pull output 30W+30W W410 x H183 x H160 mm 13.8 kg