I heard Bryston Amps in the past. Excellent build quality, excellent warranty, tend to be more forward and brighter than McCormack amps. You would need to spend more per watt then for McCormack. Why, I don't really know. It is important to match speakers with Amp characteristics. Not being familar with the characteristics of PSB speakers it would be hard for me to give an opinion. However, I took a chance with my set up which revolved around Vandersteen 2CE Sigs. They happen to be rather inefficient, around 86 DB or so. Many people were of the opinion that Vandersteen and McCormack were a good match because of the characteristics of the speakers and amp. In your case, you might want to try the lesser expense route first and find a used Mccormack DNA0.5 which you can find fairly regularly on the Gon for around $600. If that doesn't do it for you then you can sell the amp for at least what you paid and find a Bryston. As far as power is concerned, unless you play music very loud, too much power is not an issue on high quality speakers. Anyway, this is what makes this hobby so interesting. You never get sick of tinkering. Although I believe that I found my sit tight combo for a while after 3 amps and five preamps. I went over to the tube side and am quite glad that I did. I bought the DNA-1 for 800 and sold for $825 a year later.
Good luck and let me know how you make out...
Eagleman
Good luck and let me know how you make out...
Eagleman