I've left my SS Coda amps on 24/7 for years. The only time I turn them off is if I'm monkeying around with the system in some way or if I go out of town. In my experience, SS amps sound best when left on all the time. I sometimes put the Codas into Standby overnight, but even then, it takes about 30 minutes or so for them to come on full song out of Standby, so I like to leave them fully powered up generally.
