SANSUI AU-20000
¥ 280,000 (around 1977)
Commentary
This is a pre-main amplifier with built-in high power and substantial basic performance as well as maniac attached functions.
Triple push-pull complimentary service stage is adopted, and all stages are directly connected with pure output OCL system enabling high power and low distortion factor.
Equipped with 2-amp CR + NF type equalizer.
Equipped with a triple tone control function.
A Tone defeat with flat characteristics.
Large power supply unit using high-performance toroidal transformer and stabilization circuit.
Switchable input sensitivity / impedance.
Model Rating
Type | Stereo pre-main amplifier |
Effective power | 170W + 170W (Both Channel Operation, 20 Hz ~ 20 kHz, 4.8 Ω) |
Total harmonic distortion factor | 0.05% or Less (at Rated Output) |
Cross modulation distortion factor | 0.05% or less (70 Hz : 7 kHz = 4 : 1 SMPTE) |
Frequency characteristic | 10 Hz to 50 kHz (+ 0 -1dB, 1W) |
Output bandwidth | 5 Hz ~ 30 kHz (IHF, 8 Ω) |
Damping factor | 80 (8 Ω) |
Hum and noise | Phono : 70 dB or more AUX : 80 dB or more |
Phono input sensitivity | 1.5, 3.6 mv (30, 50, 100k Ω) |
Phono maximum allowable input | 800 mv (Input Sensitivity 6 mv) |
RIAA deviation | ± 0.2 dB (30 Hz to 15 kHz) |
Channel separation | Phono : 55 dB or more AUX : 60 dB or more Power Amp : 65 dB or higher |
<General> | |
External dimensions | Width 460x Height 178x Depth 400 mm |
Weight | 23.6kg |