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Sansui AU-505

Solid State Integrated Amplifier (1972-74)

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Sansui AU-505


The AU-505 is a solid state performer that belongs at the head of it's class.

No other integrated amplifier in it's class can touch Sansui's AU-505 for tonal quality, versatility, ease of operation and economy.

Offering luxurious performance at a modest cost, it comes across as the best buy in it's price range.

In fact, it even offers features that more expensive models lack.

Designed in the finest tradition of Sansui's prestigious AU series amplifiers, it delivers performance previously unheard of in a compact unit.


Power output: 12 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 60kHz

Total harmonic distortion: 0.5%

Damping factor: 50

Input sensitivity: 4mV (mic), 3mV (MM), 200mV (line)

Signal to noise ratio: 70dB (mic), 70dB (MM), 75dB (line)

Output: 200mV (line), 30mV (DIN)

Speaker load impedance: 4Ω to 16Ω

Semiconductors: 23 x transistors, 2 x diodes

Dimensions: 407 x 115 x 278mm

Weight: 8kg


flyer   English -

operating/service manual   English - Tickler

quick start card   English - robertgw

operating/service manual (imp scan)  English - Ivy Caudieus

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Sansui AU-505

Picked up a 1974 (never serviced) AU-505 for next to nothing. Extremely dirty with grease and dust. Just cleaned the facia and the pots. My default system consists of an Adcom GFA555 II (the beast); Tascam 130; Denon CD1600; iPod classic with Apple lossless songs and a set of Kharma Emotions.

The 505 should not be able to stand in the shadow of the mighty Adcom which specs are in another league. However... listening to Beth Hart's "Chocolate Jesus" is an almost religous ;-) experience. The 505 is much, much more involving, musical... I don't know... just plain more real.

I'm a Sansui convert within a day. Like so many before me.

sansui au 505

Hello i search the schematics for sansui au 505
Please contact me if you have
Thank you bernard

thomasoswaldgermany's picture

Great sounding, less oversized

This AMP is my first one from Sansui, I put it on ebay. I'm very happy with this little easy handling audio piece. My setup 70's Thorens TD 145 and TEAC P 500 with ProJect DA-Converter. Speakers from I.Q. Germany. Very transparent sounding with much depth and analog warmth. Easy to maintain. You can use schematic from AU 555.

sansui au 505

i use a pair switched, man they sound great

This website is not affiliated with or sponsored by Sansui. To purchase AU-505 spares or accessories, please contact the company via their website or visit an authorised retailer.