Maintenance has been completed, including replacement of 32 deteriorated transistors and 40 deteriorated capacitors! A diatone preamp with a thick mid-range sound. The sense of extrusion in the low frequencies is also good, and the overall sound is energetic. Also, it is one with a full range of functions as a preamplifier, such as input gain adjustment and left and right independent tone control (Sasaki Shota)
Maintenance information: 2025.11.8 Maintained (switch and volume disassembly contact polishing. Replace 16 deteriorated transistors and 24 capacitors in the tone control circuit. Replace 8 deteriorated equalizer circuit transistors and 12 capacitors. Replace 8 transistors with deteriorated power circuits. I/O pin jack polish. Set it with a power amplifier to check the sound output for a long time. The main volume of this unit is an attenuator, so please use it where you click, and if you stop it in the middle of a click during a check, etc., a gang error (left and right level difference) may occur.)
Main specifications: 2 mono construction system, special attenuator volume adopted, equipped with 2 PHONO inputs, 2 line inputs, W425 x H169 x D204 mm, 5.8 kg