A couple of months ago I replaced my Conrad Johnson ET5 preamp with the new Pass Labs XP22 in my second system SME20>Lyra Atlas>Vendetta Research 2T>Pass XP22>X250.5>Magnepan 3.7>Rel. It was as revelation. The system became far more detailed and open sounding. It feels like there is nothing between you and the music. Everyone who has heard it has been awed by the transformation. We all agree that the main system (see profile) has taken a back seat to it. In an effort to right some wrongs, I decided to replace my ARC GS150 in the main system with Pass Labs XA100.8 mono blocks. I have made the move to non tubes several times before but always miss the depth and soundstaging that tubes provide. However hearing the spreed and resolution that I’m getting in the second system I have to give it another try. Changing to Wilson Alexia 2’s from 1’s I think that the extra control that the Pass amps provide with tighten up the low end of the speakers also. Can’t wait to hear the results but it’ll be another 3 weeks till delivery.