Maintenance has been completed, such as condenser replacement, various switches, volume cleaning, etc. 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 under the MODE selector (Daiki Goto)
Maintenance information: 2010.5.16 Maintained (each SW, VOL cleaned. Phono noise ⇒ transistor channel replacement, tantalum C defect ⇒ replacement, main VOL level difference ⇒ replacement. Glass panel peeling correction (partial not possible) shield cable earth soldering treatment, PHONO pin jack plating line treatment. Operation check)
2026.4.15 Maintained (each SW, VOL cleaning, pin jack cleaning, lamp deterioration replacement, power supply capacitor deterioration replacement, push button TAPE 1, 2 dismantling and cleaning, pin jack ground removal → plating line treatment.)
Accessories: instruction manual (copy)
Main specifications: input terminals, RCA4, PHONO input, 2 pre-out systems, W445 x H195 x D395 mm, 16 kg