Technics SU-Z36 (1989)
The Technics SU-Z36 is a Japanese-market stereo pre-main amplifier from 1989. It launched at ¥24,700. It was built for 100V operation and, as far as the record shows, sold only in Japan. One documented service write-up mentions replacing the 100V transformer with a 120V unit for US use. Beyond that, the record is thin. No period reviews have surfaced in the Archive's holdings, and little is documented about where the SU-Z36 sat in Technics' lineup.
The interesting part is the microphone mixing function, with independently adjustable microphone level, echo level, and L/R balance. It was aimed at vocal work and karaoke-style use rather than strictly two-channel listening. It also has a loudness switch and conventional bass/treble tone controls. Known specifications:
- Effective power: 40W + 40W (1 kHz, 8 Ω, EIAJ)
- THD: 0.007% or less (1 kHz, rated output −3dB)
- S/N ratio: 95dB (IHF-A)
- Phono: RIAA ± 0.8 dB, 20 Hz–20 kHz
- Power consumption: 55W
- Dimensions: 430 × 99 × 220 mm; 4.6 kg
A 2019 service record gives the most detailed look inside the unit. The work included replacing all capacitors including the filter capacitors, replacing problematic transistors, balancing DC offset, cleaning all controls, and replacing the power indicator lamp. A Russian classified listing has shown an asking price of 15,000 ₽, though that says little about general market value.
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