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What to choose between Sansui au x701, sansui au x911dg

No offense to anyone. I am, by nature, a lumper not a splitter. The AU-D11II, X901, and X911DG were the earliest high end X-balanced Sansuis available on the international market. The true alpha series came later, were all X balanced and I believe (I admit I can be wrong) that the designation alpha was chosen because of its similarity to the letter X perhaps to distinguish them from non X balanced amplifiers like the X1 or X11. I was using “later alpha” in both the literal sense that the alphas were later and in the sense that X balanced and alpha are almost synonymous.

If you look at the time line of amplifiers on the domestic versus international page on the Best of Sansui website you will see that the X911 (X777DG) and the domestic X999DG are characterized not as being in the AU- (7)07 lineage or the alpha lineage but in the “one number three digit series”. Interestingly (at least to me) if you look at audio-database.com (which I believe is audio-heritage.jp or something like that). You will find the X777DG and the 999DG listed together (appropriately enough) but at the end not with the 07s or alphas per se but near the X1 and similar “unique” amplifiers with designation AU alpha 777DG and AU-alpha 999DG.

As rose by any other name…

Cheers.

Marc
 
It is interesting, that history of Sansui amplifiers!
Since I have been looking on Yahoo auction Japan I came to find a whole new Sansui world.
And it's correct that the AU-D11 II and D77X are not alpha amplifiers by name. The X701/901/711 are the international versions of the AU alpha 607/707/607i. The 777/999DG serie is outside from the x07 series but definitely based on the AU alpha x07 Extra serie.
When you look good at the timeline you can see that the assumption that Sansui started making better build amplifiers (again) with the X701/901 is not correct. That just stands for the international version. Internationally already with the D77X, which is one under the TOTL model, they went with essentially the AU-D507X with a little more power and a plastic front plate. Then the AU-GxxX series did not even exist in Japan, they where based on probably the AU-Dx07X serie and I think the AU-G90X was almost the same as the JDP AU-D907X, the AU-G77X II as the D607X. The AU-G99X seems to be derived from the C-2101/2102/B-2101/2102 which I have to think, after checking in on Yahoo auction Japan almost everyday for close to a year and never seeing them, are also international models only, derived from the B-2201.
I have to agree, spec wise there is almost no difference between 777DG and 999DG, probably some in the details.
 
No chance 9900z would even close in to a 711, or a 911.
Both x11's , are in a league of their own.
911's phono is quite good.
Not the best there is but quite good indeed. It's more than adequate..
Jomark911. Your assessment has now bee justified. Took the x711 apart today and replaced just about all the electrolytic's as I found several were mildly weeping on the main and power amp boards ...my wife really hates me now. ;) I suspect the z probably needs the same thing
 
Took the x711 apart today and replaced just about all the electrolytic's as I found several were mildly weeping on the main and power amp boards

Sounds like the corrosive glue issue - both my 701 and 711 suffered from this.

A recapped 711 is a great sounding amp. I did mine several years back along with some other tweaks and she sounds very nice indeed.
 
Didn't see any glue Pete ,just a oily ring under the caps as I replaced them, all the 220uf's.. it wiped off with some alcohol
 
How's that?
Why not with nichicon Muse?
I did my C2301 some days ago , changed everything , almost , some where already changed with muse , and the smile came back on my face. Instantly.
 
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