solid state gear- leave on?

I too am forced to respectfully disagree with Pabelson. Turning an SS amp on and off daily is -the- action that shortens its life more than anything else (given the presence of adequate ventilation, of course).

Also in response to Pabelson, SS amps pull differing amounts of current depending on their design. Many pull very, very little, especially when idle. While I agree with you about our obligation to confront global warming and the dependence on Middle Eastern oil, I don't think it should be made into an issue here.

Oakiris: the act of turning your computer on will suck up a heck of a lot more power than leaving it in sleep mode for an hour or two will.