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Sansui RA-900

Reverberation Amplifier (1980)

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Sansui RA-900


The addition of reverberation (or echo effects) to your stereo sources makes all musical reproduction seem much closer to the authentic realism of the original performance - concert hall realism, disco realism, much more.

Now with the Sansui RA-900 the listening pleasure of your current Hi-Fi system is sure to be enhanced. This efficient unit has a special circuit with which to mix a tape, FM or record sound with another source - say, a microphone or guitar sound.

It also accepts two stereo tape decks, cassette or open-reel, and permits dubbing in either direction. When you add up all these capabilities you quickly arrive at the fact that it's the most versatile and easy to use reverb amp available.

Noise and distortion? Not with the RA-900. We've built it with select parts and advanced circuitry. Of the double pickup type, the RA-900 boasts no more than 0.05% total harmonic distortion and better than 96dB signal to noise ratio.

Designed for instant 19-inch rack mounting, it is sure to make your Hi-Fi sound more enjoyable, more true to the original performance. And remember its from Sansui where it's all Hi-Fi.


Frequency response: 20 to 20,000Hz

Input sensitivity: 1mV (mic), 20mV (guitar), 150mV (source/tape)

Total harmonic distortion: 0.05%

Signal to noise ratio: 68dB (mic/guitar), 96dB (source)

Rated output: 150mV (output/tape)

Reverberation time: 0 to 3 seconds

Dimensions: 430 x 110 x 293mm

Weight: 4.6kg

Semiconductors: 8 x transistors, 6 x diodes, 3 x IC


Related Catalogues

HiFi Guide

Stereo Sound Guide

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Reviewed Feb 16th, 2017 by jesusfernando




re: RA-900

Does anyone have either/both the owner's manual and the service manual for the RA-900? I have recently acquired one of these, and would like to go over the operational details. Also, the left channel fades in and out, thus a trip to the tech with a service manual is likely in it's future. Thanks!

This website is not affiliated with or sponsored by Sansui. To purchase RA-900 spares or accessories, please contact the company via their website or visit an authorised retailer.