Each switch, lamp, volume replacement, etc. have been maintained! Preamps were sold during the heyday of analog. Compared to C29 and later amplifiers, it has a rich and glossy mid-range. This is truly a preamp representing the golden age of McKinn. There is rust and dullness. There is peeling on the center button. Serial AS3194 (Murakoshi Yoichi)
Maintenance information: 2026.4.13 maintained (each SW/VOL cleaning, lamp deterioration replacement, pin jack earth float → plating line treatment, shield cable terminal solder treatment, push button TAPE 1 and 2 dismantling cleaning, pin jack cleaning, glass panel peeling correction (push button part cannot be fixed), shield cover creation, main VOL replacement)
Accessories: instruction manual
Main specifications: input terminals, RCA4, PHONO input, 2 pre-out systems, W445 x H195 x D395 mm, 16 kg