Both my Quad 405-2 and my Bryston 4B sound better when left on all the time, so that's what I do. Bryston specifically states that it is perfectly okay to do this. It is the normal practice in pro audio. I even read a review of the Bryston 4B-ST in which the author thought the amp was grainy and harsh until he forget to turn it off one night. After that he thought it was the best amp for the money that he'd ever heard. In any case, try it out yourself and decide. Hope this helps. Joel.
