The XA.5 requires no warm-up. I don't even leave it on during the winter. It sounds great coming out of stand-by. If it gets any better over the first hour, I would have difficulty discriminating in a blinded test.
I have no experience with the Bryston. But, I am now a believer in pure class A amps.
I have no experience with the Bryston. But, I am now a believer in pure class A amps.

