It has been maintained with thorough disassembly and cleaning of switches and volumes. A rare preamp sold during the golden age of Macintosh. It is a McKinn preamp with a mild impression compared to the C33, etc., and has an orthodox expression with thick mid-range and well-balanced low frequencies. Equipped with an equalizer function and many input systems, this unit is easy to handle with simple operation. In addition to the exterior and paint unevenness, you can also see a feeling of use such as dullness, rust, scuffs, etc. (Kobayashi Hitoshi)
Maintenance information: 2026.6.12 maintained (balance, loudness volume, each push switch, selector switch, volume disassembly cleaning, replacement of 5 equalizer volume slides, 5 lamps, 2 spark killers, front panel, RCA terminals, and knobs cleaned. (Each operation check, waveform check, sound output test) 2022.6.30 maintenance (each SW/VOL cleaning, pin jack cleaning, capacitor replaced by another company, lamp replaced, current status OK, operation check of each part.)
Accessories: copy of instruction manual
Main specifications: 5-band tone control preamp phono mm1 system line input 8 systems size W406 x H138 x D330 mm weight 8.2 kg