SANSUI AU - α 305 rx

Commentary

A pre-main amplifier with newly developed audio elements mounted on the output stage.

The output stage is equipped with a newly developed audio element SAP (temperature compensated transistor) with built-in temperature detection and compensation circuits.
This solves the fluctuation of the operating point caused by the time loss when it is connected externally to the conventional power transistor, and achieves the dynamic characteristic that the operating point dynamically follows the strength of the music signal by temperature compensation in almost real time.
Since the distortion factor does not vary depending on the output, the bare characteristics at low to medium volume are stabilized.

The well-balanced layout of the transmission and amplification circuits reduces various adverse effects on sound quality, such as signal jumping in the circuits.

In order to realize purer music playback, we adopted Source Direct, which minimizes the signal transmission path.

It is equipped with 37 key unified remote control as standard for improved operability.

Model Rating

Type	Pre-main amplifier
Effective power	65W + 65W (double-channel operation, 20 hz to 20 khz, 8 Ω)
Total harmonic distortion factor	0.04% or Less (20 Hz to 20 kHz, 8 Ω at Rated Output)
Input Sensitivity / Input Impedance (1kHz)	Phono (MM) : 3.3mV/47k Ω CD, tuner, line, Tape1, 2 : 200mV/47k Ω
Maximum allowable input	Phono (MM) : 100 mV (1 kHz, THD : 0.1%)
Frequency characteristic	Phono (MM) : 20 Hz to 20 kHz ± 0.5 dB CD, Tuner, Line, Tape1, 2 : 10 Hz ~ 70k + 0 db, -3dB
Signal-to-noise ratio (A network Short circuit)	Phono (MM) : 75 dB or more CD, Tuner, Line, Tape1, 2 : 102 dB or more
Tone control	Maximum variation of Bass : ± 8 dB (50 Hz) Maximum variation of Treble : ± 8 dB at 10 kHz
Loudness (Volume -30dB)	+9dB(50Hz) +6dB(10kHz)
Rated power consumption	150W
Non-signal power consumption	21W
Standby power consumption	11W
External dimensions	Width 430x Height 143x Depth 351 mm
Weight	8.8kg