leave solid state power amps on?

I don't think it's a good idea to leave CDP's or CD transports on when not in use. You might want to check this with the individual manufacturer, but so far as I know, none of the lasers go into standby mode when not in play.

This whole thing confuses me as I know heat is an enemy of electronics. Even my amp which biases itself down still runs warmish and I figure if I can turn a tv off and on for a decade without a problem I'd hope my audio gear could handle it too. I can't see leaving anything on and I'm no EE but it seems like it wouldn't last as long this way. Just turn stuff on a half hour before you sit down and you won't waste any electricity. If your gear can't handle being turned off and on without breaking down buy something else. My brother owns a receiver I bought over twenty years ago made my Technics and it still works fine. I use a Marantz 2220 for headphone listening while I'm on the computer. It was made in the early seventies and works fine still. Imo we audiophiles can be too neurotic.

Buy a Bryston, and don't worry about it for 20 years.