SANSUI AU-22

Commentary

Pre-main amplifier with all-IC design.

Hybrid IC with high reliability and excellent S/N ratio is adopted in the power stage.
The circuit configuration is an orthodox quasi complimentary service system.

A high-gain IC is used in the equalizer to increase the NFB, flatten the frequency response and improve the distortion factor and S/N ratio.

Monolithic IC is used for the tone control part.
The adjustment is Klix/Klukš top type, and it can be corrected in 10 stages.

Equipped with a high filter and loudness switch.

A push-type input selector is used for quick and one touch operation.

Two types of speakers can be connected.

There is a microphone jack on the front panel and it can be used in various ways.

The AU-22 uses a method in which the front panel control switches are connected directly to the printed circuit board instead of using cables.
This eliminates problems caused by wiring and improves reliability and durability.

Model Rating

Type	Pre-main amplifier
Effective output (1 kHz)	13W + 13W (8 Ω, both channel operation) 15W/15W (8 Ω, single-channel operation)
Music power (IHF, 1 kHz)	50W (4 Ω)
Total harmonic distortion factor	Not more than 0.8%
Cross modulation distortion factor	1.0% or Less (Rated Output, 70 Hz : 7 kHz = 4 : 1, SMPTE)
Power Band With (IHF)	30 Hz to 22 kHz
Frequency characteristic	30 Hz ~ 40 kHz + 1.0 -2.0 dB (Main Amplifier at 1W Output)
RIAA deviation	30 Hz to 15 kHz ± 1.0 dB
Damping factor	30 (8 Ω)
Input Sensitivity / Impedance	Phono : 2.5mV/50k Ω Tuner, Aux : 150mV/50k Ω Tape monitor (PIN/DIN) : 150mV/50k Ω Mic : 2.5mV/10k Ω
Phono maximum allowable input	100 mV (THD 0.5% or less)
Output Voltage (1 kHz)	Tape rec(PIN):150mV
Channel Separation (1 kHz)	Phono : 45 dB or more Aux, Tuner : 45 dB or more
Hum and noise (IHF)	Phono, Mic : 65 dB or more Tuner, Aux, Tape monitor : 75 dB or higher
Tone control	Bass : ± 12 dB (50 Hz) Treble : ± 12 dB (20 kHz)
Loudness (Vol-30dB)	+ 10 dB at 50 Hz, + 8 dB at 10 kHz
High filter	7 kHz, -3dB (6dB/oct.)
Rated power consumption	45W
External dimensions	Width 400x Height 120x Depth 240 mm
Weight	5.5kg