59 parts, from the fuse to the electrolytic capacitor, have been replaced, and it has been completely restored and fully maintained! An attractive A-class power amplifier with a powerful, thick sound. The sense of energy that makes even large speakers sound is a product close to the mid to low range, which is in contrast to modern models. It is a power amplifier unique to the heyday of audio, with thickness, scale, and room. The exterior is dull and has a feeling of use appropriate for the model year (Hiura Katsuji)
Maintenance information: 2026.1.28 Maintained (fuse resistor, fuse replacement, relay disassembly and cleaning, internal wiring installation correction, electrolytic capacitor replacement, rear volume, switch disassembly and cleaning, terminals and housing cleaning. (Readjustment aging test for each part)
Accessories: instruction manual (copy)
Main Specifications: Real Bias Circuit Class A Operation 250W+250W (8Ω) 300W+300W (6Ω) Dimensions W488 x H199 x D480 mm Weight 30 kg