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Sansui A-5

Master Integrated Amplifier (1982)

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Sansui A-5


Power output: 25 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 50kHz

Total harmonic distortion: 0.08%

Input sensitivity: 2.5mV (MM), 150mV (line)

Signal to noise ratio: 75dB (MM), 90dB (line)

Output: 130mV (line)

Speaker load impedance: 8Ω (minimum)

Dimensions: 430 x 132 x 247mm

Weight: 4.5kg


Related Catalogues

Stereo Sound Guide

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Reviewed Sep 01st, 2019 by

I bought this amplifier in 1984 with the earnings of my first work summer, and still have it. I have used it with Technics SL-103 turntable and ESB 75W 8ohm loudspeakers. It was an entry-level system, but extremely satisfactory and I used it quiet a lot. In 2005 I sent it for revision: failed LED VU meter light, noisy volume knob, and power switch sending loud noise to the speakers when turned on/off. It worked magnificently for another 10+ years, but recently it started generating a loud scratching noise when switched one (the noise lasts for a few seconds and then everything works fine), as mentioned by other members.
I replaced the Sansui A-5 with other entry-level vintage amplifiers, such as Sony TA-5 and Technics SU-7300K, but they had many more problems than my Sansui. The Sansui renders a balanced sound without distortion across a large volume range (sometimes I had to turn the volume up to 75% in order to drive my speakers). Compared to the other two amplifiers, the sound is a bit warmer and the instruments are better defined. All other controls (loudness, channel balance, filters, input source have always worked perfectly well). In summary, extremely good value for money. I will send it once again for revision.



re: A-5

Like the others, I have had the same burst of noise immediately after turning on the amplifier, but it has never affected my listening. I bought the unit, along with the AM/FM Stereo Tuner T-5, in 2001 for about $35 in a junk shop in Brooklyn; it has never failed me!

re: A-5

I have the same problema at start, but after this all work fine

pedromoya's picture

re: A-5

Thanks You very much HiFiengine site. I love this Amplifier, has an excellent sound, very real sound. You can enjoy It listening classical music. But now (after 37 years) is having a problem at the startup, It starts with a strong noise for about 10 seconds. With the service manual, I´ll have the way to check It.

Paul Co's picture

re: A-5

My A5 has now bit the dust.. the power transformer secondary winding is open ..the winding for the power lamp is still good...is there a fuse somewhere in this thing for the secondary winding? I cannot find one at all accept the main fuse..help?

Paul Co's picture

re: A-5

I have this amp also with the same noise problem on Startup and shut down..it is like a static sound , but after it warms a bit it goes away and works great for a little amp..I have not found what is causing it as yet..I suggest turning off the speakers before turning it on or off..
Although this amp is only 25w/c it sure seems like more to me.

Paul Co's picture

re: A-5

I just bought one of these amps as I like to repair Vintage gear.. Mine was only $10 and at present doesn't work..accept it does power up. All switches are working as are the LED vu meters..no sound as yet.. maybe the Big dual amp IC is the problem.

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