I recently purchased my first Parasound amp. I picked up a Parasound A21 to replace my 1 year old ATI 3007. I must say that I definitely prefer the Parasound. I have also owned Sony TA-N55ES (late 90's), Acurus A150's, Classe CA-200 & CAV75, Pass Labs X150, Anthem MCA20&50, Emotiva XPA-1 monoblocks and an XPA-5. I had an in home demo of a Bryston 4B-ST around 2002 at the time I owned the Classe and Pass Labs amps. I had always been sorry that I sold my Classe amps until now. Now i'm waiting on my new preamp.