Audio Database


SANSUI AU-alpha 555VS
69,800yen(around the 1989 time)

The integrated stereo AV amplifier which carries an image input/output.

By improving a power stage, the low-impedance load-intensity drive capacity up to 2ohms is acquired.

The circuitry of a music signal system and a picture-signal system is separated from substrate level, it shields severely as a two-layer structure, and thorough exclusion of the cross interferencee between an audio/visual is carried out.
In the image input/output, the wide band video-system amplifier of 10MHz of passbands carried in the high-class video-system selector was carried, and the failure of image quality is prevented to it.

The power-source part has prevented the cross interferencee by making an analog system, a video-system system, and a microcomputer system into another coil from a transformer, respectively.

The copper screw was adopted as the fixture of a termination panel, and the influence of the tone quality on a picture signal with a high frequency is eliminated.

The remote controller is attached and volume control by a motor volume and an input changeover are possible.

The audio REC serector, the Source-Direct functionality, the last memory functionality in which the timer using was taken into consideration, etc. are carried.

Image Image Remote

Rating of a mode
Form Integrated stereo AV amplifier
<Amplifier part>
Effective output (10Hz - 20kHz, both channel operation) 90W+90W (6ohms)
80W+80W (8ohms)
Dynamic power 340W (2ohms)
240W (4ohms)
140W (8ohms)
THD (at the time of an effective output) 0.008% or less (8ohms)
Cross modulation distortion 0.008% or less (8ohms)
Dumping factor 100 (8ohms)
Frequency characteristic (1W) DC-100kHz+0 -3dB
Input sensitivity/impedance (1kHz) Phono man month: 2.5mV / 47kohm
Phono MC: 300 microvolts/100 ohms
Line system: 150mV / 47kohm
SN ratio (A network) Phono man month: 85dB or more
Phono MC: 70dB or more
Line system: 100dB or more
Tone control The Bass maximum variation: ±8dB (50Hz)
The Treble maximum variation: ±8dB (10kHz)
<Video-system part>
Input sensitivity/impedance 1.0 Vp-p/75ohms
Frequency characteristic 5Hz-10MHz+0 -3 dB
Power dissipation 175W
Dimensions Width 430x height 160x depth of 390mm
Weight 11.0kg
Adjunct Wireless remote control RS-1160