Audio Database

AU-20000
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