Transistors, capacitors, and resistors were replaced, and each switch was thoroughly disassembled and the contacts polished. Fully maintained! The well-extruded sound with a core is full of appeal that cannot be obtained with modern audio. On the exterior, you can see a feeling of use, such as dullness, abrasions, etc. Serial 202466 (Tomoho Asaine)
Maintenance information: 2026.5.15 Maintained (67 electrolytic capacitors, 52 transistors, 4 semi-fixed resistors, 6 rear double volumes, 2 spark killers, 2 microphone terminals, DIN terminals, power supply micro switches, fuses, 2 cushions (EPT sealer), 2 meter lamps, and main VR were replaced. Disassemble and clean 12 rotary switches (power, meter level, BASS, TREBLE, OVER BASS, OVER TREBLE, mode, filter, function 1, function 2, monitor), output level switches, balance VR, microphone mixing VR, headphone VR, impedance select switches, grease the contacts, DIN terminals, and RCA terminal screws and nuts The replacement headphone jack and AUX3 jack terminals were cleaned on the spring washer. Each board is re-soldered and flux cleaned. 23 RCA terminals have been replaced. Adjust the power supply for high voltage 150V and low voltage 37V. (Check the input/output waveform, check the left and right balance, and perform a comprehensive operation test by connecting a power amplifier)
Main specifications: Type stereo preamp input Phono (MM/MC compatible) /tuner/AUX/tape, equipped with phono input switching/load switching function, frequency characteristics, Phono RIAA deviation within ± 0.5 dB, high level 10 Hz to 100 kHz S/N ratio, high level 90 dB or more, phono 70 dB or more, harmonic distortion ratio 0.03% or less, tone control, Bass/Treble filter, Low/High equipped with 2 output systems RCA/headphone terminal equipped power supply AC 100V power consumption 23W external dimensions W400 x H149 x D315 mm weight 9 kg