I just picked up the Silver 88s a few days ago for evaluation. My concerns were quickly laid to rest concerning a leading edge softening that I heard at the dealers. It seems the QS linestage was a major contributing factor to that impression after listening to that both the remote and regular linestage in a friend's system, an overall softening which has typically been my impression of QS over the years, musical but a bit lush.
Well the amp is a different animal with the KT150 tubes. The magic that I heard originally with the V4s carries over to the Silver 88s. This is one fine amplifier with texture and body AND superb resolution of the subtle harmonic details that gives greater insight into a musical performance. So I would say for the money it should definitely be considered by anyone willing to spring the price and wants to hear what all the fuss is concerning the KT150 tube. There is nothing wanting, as a matter of fact I spent all last evening listening, even missing the NBA conference finals going from one disc to the next.