SALVE HO UN SANSUI AU 7700,COMPRATO A 80EURO E UN DECK,PARI A 140EURO,DICO CHE QUESTO 7700,E UN MOSTRO,ED E COSTRUITO EGREGGIAMENTE,O PURE ALTRI,AU-D11,AU 717,G9000,AU-X901,MA IL 7700 LI BATTE DECISAMENTE,SONO CERTO CHE MI DURERA TUTTA LA MIA VITA NON E MAI STATO RIPARATO E ANCORA OGGI SUONA DA DIO,A GLI AMP, DI UNA VOLTA CHIEDO SCUSA I SANSUI..........MEDITATE POPOLO,SPERO CHE SANSUI RITORNI.

great item i love it

I am a big fan of music. I have Thiel c 2.2 floorstanders that really match the amp well. I also have a Arcam FMJ 27A with purist interconnects. My Boston acoustic subwoofer is pluged in to the external amp connects. I have it turned down at only 50 hz because bass is not a issue with the 7900. The sub gives it a little warmer feel. The phono amp is great for my Thorens TD 115 MK 2 turntable. If you surround the Sansui AU 7900 with other good components, your music collection will sound wonderful.

Excellent sound quality and very durable. Bought my Sansui AU 7900 in 1975. Has been used to power home stereo systems, dances at school gymnasiums, and more recently, complete home entertainment systems. I've blown through a half dozen pairs of speakers from Pro Linear to Bose 501's and the amp refuses to die. I've had a few minor repairs performed and the repair shops love to work on it. Will probably have it for another 30 years.

It is a pleasure to use the Sansui AU 7900 amplifier every day!!!!!

The Sansui AU 7900 is the best amplifier ever made! Mine still works just fine every single day for almost 30 years now, no problems whatsoever... I also have the tu-5900 tuner which is so sensitive I can receive radio signals from Russia, US and other far away countries(my Sansui lives in Holland). I recommend Sansui high-end equipment to all REAL music freaks.

If you can find a Sansui AU 7900 in good working order, get it. (See Good Points).

I was looking for an amp about a year ago and came across this beauty at a used-audio market.(For 150 euro it was quite a steal anyway). This little monster is great.

Build :
It's built and weighs like a tank. At the back there is a large heatsink (kind of rough though)the inputs/outputs and speaker posts facing up. The knobs are great to look and operate (no plastic here) and the overall looks with the black fascia is great. Minor complaint, the power cord is fixed and could be better. Anyway it can be replaced easily.

Features:
It's full of controls (2 muting options, filters, loudness and triple!! tone controls (bass,mid,treble) to experiment with. Still I think the most neutral sound comes all filters and tones off. It also comes with 2Aux, 2(!) Phono Inputs(MM/MC),Tuner,and 2 tape and a headphone output.
By the way there are two speaker sets. Since there was no manual I am not quite sure about the output but I believe it to be rated at about 60-75W. Sound:
The sound is clean, realistic , full of rythm never edgy or harsh but without becoming blury or lean. Quite a piece of work.
A friend of mine owns a Sansui QRX6500 receiver (which as I recalled sounded great despite its years) and I really wanted to compare the sound so I had her to bring it over for a listen. What a friend (Ever tried to lift a Sansui?).
All in all the sound is quite similar with main difference in power (QRX definetely went louder). Another thing is that while AU-7900 sounded more clean,detailed , the QRX6500 sounded warmer, rounder but less analytical though (not foggy). I wonder if the QRX's wooden cabinet has anything to do with that. AU-7900's cabinet is completely metalic.What they do have in common is how great music they both play.(Still I'll miss the reciever part).
Sum up:
Great amp at a no cost price.Don't think twice, if you find one that is.. Equipment used: Source : Nad cd-541i Amplification: Sansui AU-7900 r> (Sansui QRX-6500)
Speakers : Quad 11l r>Stands : Atacama r>Speakerwire : Straightwire 'Rythm'r>Interconnects: VanDenHul D102 Mk III Eccose 'Composer'r>Cd's Used : 'Tous les mattins du monde' ,
'Legends of the 20th Century',
Duke Ellington
'Howlin' Mercy'
John Campbell
'Old Friends'
Simon & Garfunkel
'Remasters'
Led Zeppelin
'Soul of the Tango'
Yo-Yo-Ma
'Relaxin' with Miles Davis Quintet'
Miles Davis
'Rising Force'
Yngwie Malmsteen
'The mask and mirror'
Loreena McKennit'
'The Lady wants to know'
Laura Fygi

After listening to an AU 9900 a friend of mine had as a present from his father-in-law (he was renewing his hi-fi system with something more WAF (wife-acceptance-factor) friendly ),I rediscovered the quality and the sound of these once renowned amplifiers (my first one was an AU101).Pity they don't exist anymore! I tracked down-via Ebay-a couple of Ca-Ba2000 (same age as the 7900 and 9900).They sound superb as they look. Not a scratch from switches or knobs, made of perfectly machined aluminium. No expense spared in engineering and workmanship. It's no secret you don't make money with the pursuit of quality!

Sansui AU-7900 amp(1977): Sounds great standing still. The build quality of these units is outstanding. They were so over-engineered, it is no wonder that so many are still working today, 25 years after production. This 80 watt per channel I bought this amp in 1977 with tuner TU7900 (ca.1800 Euro new) and works still today, year after year. (one little repair 3 years ago) Works really nice with the British speakers B&W. Although this amp has a multitude of tone controls and filters, which are great to experiment with, everything sounded just about right with all the tc's & filters off. Then Sansui were taken over and quality was sacrificed.Maybe this amp is now dated but in shop today you can`t buy better sound only more tricks!! I can't recommend this amp highly enough, but sorry its out of production and for the people wich hate this amp I feel sorry for them.

Sansui AU-7900 amp(1978): Sounds great standing still. Just looking at it off can inspire me. Like looking at a Porsche or a Ferrari. The Sansui hi-fi circa 1977-1979 represents one of the high points of Japanese consumer electronics engineering. The build quality of these units is outstanding. They were so over-engineered, it is little wonder that so many are still working today, 24 years after production. This 75 watt per channel amp was the successor to the even more beautiful looking, 54 watt AU-7700 (as seen in the movie Hi Fidelity with John Cussack). I bought this amp through ebay UK & paid £200($290) with original manual. It oozes power and drives effortlessly. Works really nicely with the wonderful, great value British speakers B&W 601 S3 (£235 new). Tons of bass (tested Leftfield Leftism trk 4 Song of Life), fantastic vocal midrange (tested; Elvis's American Trilogy) and treble is present in spades. Although this amp has a multitude of tone controls and filters, which are great to experiment with, everything sounded just about right with all the tc's & filters off. The family tree of Sansui Amps goes something like this: AU-6600, AU-7700, AU-7900, AU-9900, AU-11000 and the holy grail AU-20000, the CA & BA series of power & control amps. Then the AU-717 and AU-919 of 1979 & 1980, very good sounding amps alltough not quite in the same league in terms of external engineering. Then Sansui were taken over by Tokyo bean counters and quality was sacrificed and we had the awful pap from about 1983 onwards. I can't recommend this amp highly enough.

This Sansui amp is the worst i've ever used. how can something from 1977 or wahtever be any good at all and yes i do have one. It always cuts out on me. I hate it.

It is pure power by any standard. The sound is rich, power is plentyful . It is a music lovers dream !!!
The Sansui G-7500 was manufactured somewhere between 1970-73.

Does anyone else out there have or know about the Sansui G-7500 ? Anyone with any info please feel free to drop me a line.

Beautiful design , great amplifier , very warm sound.
This model works every day from 1977 without problem.
Unbelievable !!!

see above.

This is a great amplifier,from a decade ago.. it deserves honorable mention 80w RMS P-C Great power amp,flat,clear,and powerful.. I love mine,especialy after the Mods Very good!