Interesting, indeed!
Somehow I stopped to pay attention to the power ratings above 100W/ch at all, seing signal of music so variable that even mega-powered amps tend to clip on unexpected freequencies under a bunch of different reasons.
Brystons in its whole line is the clear example. They don't clip painful or distructive, but sometimes you realy need to realize these second-octave piano notes that sound realy distructed especially on uncompressed recordings. I know that Brystons have to be matched carefully to the speakers. Vandys despite their lack of efficiency might be probably the best match to Brystons.
Seing rating of 500W/ch in Bryston 7B-st, I believe that less than third in terms of performance will be valuable.
I can say about Krells absolutely the same or maybe better designed, but still they sound too far from reality.
There are plenty of good "drivers" other than Bryston and Krell that can drive with the same output: Plinius, Pass, GamuT.
