*Since the manufacturing period is different for mono, some circuits are also different. Refreshed maintenance has been completed in consideration of long-term use, such as 13 capacitors and vacuum tube replacement! A tubular mono power amplifier that makes you hear a profound, Macintosh sound. The highly transparent sound was restored through an overhaul. You can enjoy the relaxed and calm sound unique to vintage McKinn. This is a power amplifier I would like to try combining songs from yesteryear when I want to enjoy them with speakers from yesteryear. There are scuffs on the body, transformer, etc. appropriate for the model year. Serial 4F406 6F460 (Murakoshi Yoichi)
Maintenance information: 2026.1.15 maintained (fuse replacement, vacuum tube 5U4GB, 12BH7, 12AX7 replacement, oil capacitor 0.5 μF, 2 2W resistors, 0.22 μF 3 pairs, electrolytic capacitor 20 μF1 pair replacement, block capacitor 35/80/15 μF 2 pairs, resistor 1W1 pair replacement. HUM ADJ. RECONDITIONING & VACUUM TUBE SOCKET AND RCA JACK CAKE REPAIR Other operation checked (measured at 50 to 66 W SP: 8 Ω with rated output AC 100 to 117 V)
Accessories: none
Main specifications: 60W load 4Ω/8Ω/16Ω frequency characteristics 20 to 30,000 Hz W356 × H203 × D254 mm 20.7 kg