MAINTENANCE! Orthophone bulb primain amplifier. Equipped with a phonoequalizer that is compatible with MM/MC like the company. The output part that adopts 4 KT88 is 3 pole, 5 pole connection and NFB can be adjusted by switch, so you can enjoy a variety of speakers and various music genres. There are scuffs and line scratches on the side and front wood part (Yoichi Murakoshi)
Maintenance information: 2021.6.23 Maintenance (all wiring, board takeout, relay replacement, total modification of each part soldering. Power supply unit, Bias power supply unit capacitor capacitance measurement, KT88 × 1 replacement, fixed bias reset, running test.)
Accessories: Instruction manual, power cord
Main specifications: 32W+32W (UL), 16W+16W (TRI) vacuum tube KT88×4, 12AU7×2, 12AX7×2 W353 × H200 × D278mm 15.5 kg