Fully maintained, including replacement of 28 deteriorated capacitors! Gold rimmed early C20 preamp With the thick, soft touch unique to Old Mackin, it vividly depicts music in the mid to high range, which has a different luster from C22. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2026.3.14 maintained (5 knob internal adhesive fixing repairs, 2 40/20/20 μF, etc., hum noise replacement; 2 bridge diodes → diodes replacement; 4 electrolytic capacitors; 50 μF deterioration replacement; 19 oil capacitors; 1/2 W resistor replacement; vacuum tube socket and RCA jack caulking repair* other operation with AC 100 to 117 V (Checked)
Accessories: copy of instruction manual
Main specifications: Vacuum tube used 6x4, 12AX7, 12AU7 dimensions W390 x H146 x D315 mm weight 8.3 kg