If Pass is sounding bright, you may want to consider selling the Wilsons. I am a big Harbeth fan as you are, and I’m not sure Wilson and Harbeth lovers can get along. I have heard them sound good with Lamm, but that’s a lot of money to throw at a speaker that isn’t clicking with your tastes. Also, when some people say “bright”, they actually mean “harsh”, which to me means a honky, annoying midrange, which can be difficult to get rid of. If you’ve got the money, time and inclination go ahead, but it may take a lot of all three.
Wilson Sasha W/P amplifier pairing
I acquired a pair of Wilson Sasha W/P speakers this year. They’re Series 1 Sasha’s. Now trying to find great mono blocks to power them. My other system has Harbeth Speakers and a Pass Labs amp, I love the combo and can listen for hours without fatigue. I’d really prefer something warm and non fatiguing for the Sasha’s.
Amps I’ve tried so far:
Pass Labs X350 - too bright and forward, etched vocals, not a lot of sparkle but plenty of authority
Pass Labs INT-30A - much better all around than the X350 but still too bright and forward. Not nearly enough power for Sasha. End result is too cold and thin
Bob Latino ST-120 - this is a $1200 kit tube amp I built. 60WPC. This amp was surprisingly kind of magical with Sasha. Never fatiguing and full bodied. Unfortunately it went up in smoke because I can’t solder.
Mono blocks I’m considering:
Audio Research Ref 160M
Lamm 1.2 Reference
Pass Labs XA100.8
Preamp is a PrimaLuna EVO 400. Rega RP3 with Exact cart. Denafrips Ares II DAC streaming Roon via MicroRendu. Any advice welcome.