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1420-1503
Reply with quote  #1 

AU-1111; question raised about particular sound characteristic

 

As I've had the AU-1111 for, what, 2 years now, and as many other amplifiers have since come and gone from my -and my father's setup,  (he shares the same passion), I've come to a tentative  idea of a key characteristic that sets the au-1111 apart.


The 'discovery' happened when my father switched from my Sansui AU-1111 (to whom I borrowed it to) to his Yamaha B-1 (which was being fine-tuned and checked). 
I always looked to the B-1 with high regards, I remember its very clear and open sound, dynamisn and its superior lows. but never really did a comparison with my AU-1111. (besides these 2 are so heavy; that I don't really look out to having to lift 1 of the 2 and unite them in the same setup)


Upon the first seconds of listening to the b-1, with a favorite disc of piano solo playing  (by Tuluyhan Ugurlu) it was obvious. There was a 3-dimensional sound that had sudenly gone!
This is day/night difference that is shocking. I can't imagine my father to live with the Yamaha now.

I know from reading on this very site, the chief engineer who designed the AU-1111 strived for a tube-like sound. Unfortunately, I'm not familiar with tube amplifiers, but I do think this might be an interesting question to be raised; if the incredible dimensional sound is actually due to the 'sound of tubes',  the designers of the AU-1111 strived to?

 

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Screenname explained

 

Also, as a first post onto this forum I'd like to explain further on my screenname, because although several people asked me for it before, I never explained it publicly. But here goes.

 

What does 1420-1503 actually mean for me


1420-1503 is evoking the century when Japanese Zen monk Sesshu lived; who reunited the thousand years old Chinese art of 'Sansui drawing' with his zen philosophy; making the link with the amplifier masterpieces with the white writings on their black frontpanels and the strength  and simplicity of the Sansui drawing art.  

 

The 15th century is also the time of the first of the brilliant 'Renaissance' years and the breaking with the ignorant past for the West.  (and catching up with the East where knowledge and Wisdom was born) with 'humanism'; the idea that we, as human, have to strive to develop ourselves in more then 1 ways.

'Renaissance' also being the name for the classic Infinity speakers that I use; the Ren 90's.

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The end.

 

 

Isao Asakura
Reply with quote  #2 

Hi 1420-1503,

 

Although I'm a devoted tube gear fan, I don't think the three-dimensional sound of the AU-X1111 come from the tone characteristics of Sansui sound (originated from the AU-111).  Rather, it should be resulted from the continuing improvement on the X-Balanced Circuit originally being introduced on the B-2301 Power Amplifier back in 1982.  In addition, the AU-X1111 uses the custom made MOS-FET that was specifically engineered for only very high-end Sansui models (such as "Vintage" and "Limited" Models).  Because this particular MOS-FET yielded such an impressive sound, Sansui produced the limited edition of the MOS-FET amp (the AU-Alpha 607 MOS Limited) in 1999 that used up all remaining MOS-FETs.

 

By the way, Mr. Ohshima with Aqua Audio Lab calls the AU-X1111 MOS Vintage as "the king of Sansui Integrated Amplifier" on his Web Site.  

 

   

 

         


Jerome
Reply with quote  #3 

Dear Sir

 

I'm the happy owner of a SANSUI AU-X901 (AU-ALPHA 701 european equivalent) and I agree with each of your words concerning the sound of the SANSUI MOS-FET amplifiers.

 

Anyhow, from my point of view, the famous AU-X1 is the King of the SANSUI amplifier.

 

By the way, the french wellknowned HIFI newspaper "REVUE DU SON" and it's writter Jean HIRAGA, prefer the AU-X901 to the AU-X1111 MOS FET VINTAGE.

 

Best regards

 

Jirtme

BeatleFred
Reply with quote  #4 

Jerome:

 

I'd be interested to see the French hi fi magazine you mentioned that compared the two models, though I cant read French...

 

As for the "King" of Sansui amps, well, I would consider the AU-X1 to be a worthy contender, if not for its frustrating tendency to become unstable with high frequency oscillation and blow up (happened to me several times, and to some other people I know).

 

It hasnt been clarified if we're talking about the 'King' of just integrated amps, or all Sansui amplifiers, but for me its the.... (drumroll please):

 

BA-5000

 

Regards,

 

B/F

 

 

 

 

 

 

 

 

 

jerome
Reply with quote  #5 

Beatlefred

 

Unfortunatly this review dated of end of 80's and the comparaison wasn't done clearly just a sentence like "the AU-X1111 MOS FET doesn't have this magic touch that we found on the AU-X901".

 

About the BA5000, you are talking about the famous solid state amplifier with output transformer.

 

I was just talking about the integrated amplifiers

 

Anyhow, on my TANNOY STIRLING loudspeakers, the AU-X901 is wonderfull.

 

Best regards

 

Jérôme

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