BEST AMPS FOR WILSON SASHA

Hi Al,
 You are correct, it does transition to class B to provide more power and SET amplifiers certainly aren't capable of a differential balanced circuit. I don't know why I overlooked those two glaring factors. What is fascinating  is the reviewer (Mr. Dudley) said based purely on listening the 25 watt Shindo was so pleasing with the Shasha. You'd never imagine this outcome possible given the speaker's load demands. He did also find the 400 watt Electrocompaniet amplifier an excellent choice as well. Based on specifications alone the Shindo would ( justifiably so)  be ruled out as a suitable amplifier candidate.  Audio is such an intriguing endeavor. 
Charles, 

Thank you David. i recently installed Furutech GTX D NCF R.  An improvement over  the Oyaide R01.  will the Synergistic Research be better?

Often you see that people want to keep their speakers and they always will be protected why they want to keep them.

A client of mine owned the Wilson Audio Sasha, the first time I audtined his set I was amazed by the poor endresult of the set.

Even when he used a d’agostino momentum stereo it was still very poor.

The drivers have a slow response and the speaker is difficult to drive. Beside this the realism in sound of classical music is a lot different than it sounds in real. Even with tubes the speaker still has his own sound.

We live in 2016 and Wilson Audio still uses dome tweeters which own a reach far below 30khz.

The difficulties is has with some recordings is insane. Come on speakers in this price range with harsness in the high freq. is not done.

Even a simple recording of Jacintha the set was not able ( even with the Momentum) to create a physical double bass with all the layers you want and need.

Even with the Wadia 381i and MIT Oracle cables it still sounded poor.

A new client of mine owns the Sasha 2 with Pass Labs XA100.8 and he is not happy with his set either. Here I also will sell the Sasha.

If I were you I would sell the Sasha without doubts.

Hi Bo,
The OP wrote "I love Sasha" so clearly he's quite happy with these speakers.  I appreciate that you aren't enamored with them but that's besides the point in this case. He just wants a good amplifier match for them. 
Charles, 

I understand, but the problem is still that it is a difficult speaker.

This is based on the fact that it is difficult to drive, but also difficult to be placed in most rooms.

You have to ask yourself the question: Why you would choose for a speaker with these difficulties. In about 18 years of time I visited several people with Wilson Audio speakers, Often they had difficulties with the acoustics and drive difficulties.

You need to understand that these limitations makes it a lot more difficult to create a stunning level out of the speakers.

At the end the result of the overall sound is what counts most. Many people get a low % out of speakers they own in sound quality.

I seldom audition a set were a person gets a good level in overall sound of the loudspeakers. Many people are not able to create a good balance out of their loudspeakers.