Leaving my amplifier on ok?

It is not so much heat/cold cycling that damages caps as it is the rapid inrush of current that deforms the cap.  But, any decent designs where this could be a problem would include a “soft-start” circuit that puts a high current resistor or a resistor that has high resistance when cold in series to reduce inrush current until the cap has been gradually charge to the point when a relay (usually timed) closes a circuit that allows full current flow.  Turn onTurn off cycling should not reduce component life (except for failure of the soft-start relay which is a common failure mode).  

I find that my Class A solid state mono blocks sound better after 96 hours. They run at body temperature. There are no electrolytic caps in the mono blocks to dry out. The power supply is in another room, where the electrolytic caps remain at room temperature. So I turn them off for heat domes, not otherwise.

Ain't DIY great?

Standby mode is good to use saywhen nolongerlister8ng for the evening 

warm uptime is maybe30 minutes to sound best..

Audiogon forum opinions are like stock market opinions, for every opinion you can find the exact opposite...mine is, for SS, especially if there is a standby mode and slow power up(like Pass X250.8), turn off on front, leaving it in standby...the sound is better when warm, but that doesnt take a terribly long time.....

@bigtwin 

Sorry, I forgot you had the Big Boys.😁