The W10 is a most definite upgrade. These are awesome sounding amps which will outperform esoteric amps costing much more than themselves. I once heard them in direct comparison to a Gryphon amp at twice the price and the Sims were as good. Sim audio stuff sounding fatiquing? Please... these amps are top of the line. I suspect it was your speakers or pre that was the culprit there. I have owned Classe 200, Bryston 3B, 4B, Levinson 331 and most recently the Sim W5, and I can tell you the Sim, at least in my system sounds much more musicaL, transparent with a wider soundstage than I have heard at this price level and well beyond. The W10 is again in a whole upper level.
Go listen to them, you must at this price point.
good listening.
Go listen to them, you must at this price point.
good listening.