I have a Bryston 4B-ST amp, and think the supplied power cord works fine. I actually contacted Bryston to see if they had any recommendations, and they said that their power cord was "spec'd" to meet the needs of their amps, so in their opinion there was no real need to replace the cord UNLESS you were having a specific problem (bad power from your utility; lots of RF in the environment; etc.) The question I'd ask before spending a bunch of money on a new power cord is what are trying to correct/improve? I'd be more inclined to spend money on a decent power conditioner, such as Monster Power's HTS2000.
