Audio Database

The

SANSUI AU-alpha 507R
64,800yen(around the 1992 time)

Description
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The wide-range DC Integrated Amplifier aiming at pulling out the charm of compact disk fully.

The model which strengthened vibration proof and thermal resistance with the high-density fill is adopted as the transformer of a power-source part.
Moreover, the electrolytic capacitor for audios with a quick charge-and-discharge speed is combined.

The rotary switch and volume which are driven by the small motor of a microcomputer control are adopted, and the remote control of an input function switching and volume control is realized, without affecting a tone quality.

In order to suppress the slight oscillation which a power transformer causes, the strap mounting structure of attaching a transformer to reverse is adopted, and the oscillation is reduced using the self-weight of a transformer.

It is possible to amplify without carrying the Source Direct and going via an accessories circuitry with little frequency in use, such as a balance volume and a Subsonic Filter.

In addition to the loudness which raises a high region and low-pass, bass Booth who reinforces low-pass with a small bookshelf speaker is added.
A control in a total of four modes of every a two-step is possible respectively.

The gilding compact-disk input terminal is carried.

The MC/man month phone equalizer is carried.

The polar attached-indicator power cord is adopted.

Motor-drive A

Rating of a mode
Form Integrated DC amplifier
Effective output
(20Hz - 20kHz, both channel operation)
80W+80W (6ohm)
70W+70W (8ohm)
THD (at the time of an effective output) 0.008% or less (8ohm)
Cross modulation distortion 0.008% or less
Dumping factor 135 (8ohm)
Input sensitivity/impedance (1kHz) Phono man month: 20Hz-20kHz}0.5dB
Tuner, compact disk, Line, Tape1, and 2:DC-200kHz+0 -3 dB
SN ratio Phono MC: 68dB or more
Phono man month: 83dB or more
Tuner, compact disk, Line, Tape1, 2:110dB or more
Tone control The Bass maximum variation: }8dB (50Hz)
The Treble maximum variation: }8dB (10kHz)
Subsonic Filter 16Hz (-3dB), 6dB / oct
Loudness 1 + 9dB (50Hz), +3dB (10kHz)
Loudness 2 + 9dB (50Hz), +6dB (10kHz)
Bass boost 1 +10dB(50Hz)
Bass boost 2 +11dB(50Hz)
Power dissipation 140W
Dimensions Width 430x height 135x depth of 360mm
Weight 11.2kg
Adjunct Remote control RS-1480