Leave solid state amps on? Or turn off everytime?

If we all went with battery powered amps, none of this would matter ;)

"If we all went with battery powered amps, none of this would matter ;)"

But what would become of the batteries once they have to be replaced or can't be recharged anymore? ;) j/k

As to a response from a EE - here it is - When power is first applied to a circuit,or cut off, all sorts of transient events occur that never reoccur as long a the system is on. Very high currents and voltages are present that die out quickly. Even aside from the thermal changes that everyone is concerned with, once a steady state is reached there isn't a whole lot of difference in the stress on the components that if the system was off. For this reason, you probably will extend the life of the individual circuit components by leaving a system on all the time - more true with solid state than tubes.

Musicnoise - Power-up transients don't do more harm to electrolytic caps than constant ripple current, but increase by merely 10 degrees Celsius of temperature inside will cut capacitors life by half. I addition we won't be able to unplug during thunderstorm when we are not at home.