Pass Labs XA30.8: is it enough for Wilson Sasha 2?

I believe the XA30.8 would work pretty well also in a small room with your speakers assuming you plan on listening below 105db or so.

As a reference, I used an XA30.5 for about 3mo in my room driving a pair of Magico S3's which are a more brutal load than the Wilson's are. The room is 25 x 15 x 8.5 (H).

Eventual I ended up moving up to an XA60.8 but could have easily lived with the XA30.5 if I was forced to for budgetary reasons. The XA30.8 is even more robust in terms of its output capabilities. The power supply is roughly 380-400w. Figure almost 1/2 of that output is available for each channel when you consider the extra headroom available when the amp transitions from Class A to Class A/B mode.

I was quite impressed by what the "little" XA30.5 could do in terms of output despite what it says on paper and no doubts that the XA30.8 would be even more impressive given my current experience with the XA60.8

I’d the opportunity to test the integrated amplifier Pass INT-150 in my ‘sound room’, substituting the ARC LS5 + Symphonic Line Kraftwerk.
After some hours of plays, what I can say is that the INT-250’s sound is refined, very clear, with a good dynamic and soundstage. But the old chain remains still winning. The ARC gives to the sound more details to the mid and sweet to the highs. The Kraftwerk after provides more current to loudspeakers and then the sound is more rich, robust. Also bass are more powerful.
I think that I should try a true class A Pass power unit...

I look forward in reading more about your situation- pinox67

Happy Listening!

At the date the best amplification chain that I tried with Sasha 2, but also with B&W Nautilus 803, is with ARC LS5 + Ahifi 845 pair. The latter is an old power unit built by a small Italian builder, based on a pair of 845 tubes, the same mounted on Nagra VPA.
What you have from Ahifi 845 is not so far from VPA: These ones give to sound an incredible sense of spatialy, in all directions, sounds objects are very well defined, sound is sweet, rich or harmonics, solid. Bass are not so strong, but well controlled.
Magic of 845!

I'm surprised by your statement, probably is not the Symphonic Line at fault here but the speakers-room interaction???