BEST AMPS FOR WILSON SASHA

I believe bo1972 owns Pass Labs amplifiers, AudioQuest Wel Signature speaker and interconnect cables, Purist power cables, some form of Audyssey, and Monitor Audio speakers. I’m not sure what model Pass Labs or Monitor Audio speakers he has. If I’m correct, I submit his equipment is highly thought of. I own Monitor Audio PL500’s and they are by far the best speaker that I’ve ever owned. The PL500’s are some of the best speakers I’ve heard... Again, no absolutes in audio, but that’s my opinion based on listening.

The issue isn't his equipment, it's the constant disparaging of other gear, chest-thumping about his own self-proclaimed prowess in audio, and endless infomercial approach.  The OP wants to know what amplification people would suggest for his speakers, not to be told his speakers suck.

and dartzeel 8550 integrer amplifier is a good option for sasha, can work this speakers ?

Yes, the OP has made it clear that the Sasha is ideal for him  and his choice should be respected.  Bo you make some good observations regarding 2 dimensional vs 3 dimensional sound capabilities of audio equipment.  I suggest that you initiate a separate thread on this topic. 
Charles, 

and dartzeel 8550 integrated amplifier is a good option?, can drive the sasha?