Leave it on?

I have a Carver 5X100w amplifier hooked to my Rotel Surround pre-amplifier. I turn on and off the Rotel - it does that with the TV remote, but the carver stays on all the time. Every once in a while I'll turn it off, but for the most part it's always on. This thing is over 30 years old and quiet as a mouse. That is my surround system, not what I listen to music on. My stereo is all tube except the streamer and the Schiit Loki Max - which I never turn off.

@grannyring 

 short term trend  is no way to draw long term conclusions

right, I am drawing conclusions from the past 50 years. During which the climate on the Planet changed dramatically. The place where I grew up, when I was a kid, 85 degrees was big news and people talked it for a week, is now 100+ for weeks and months. Not once in a while but EVERY SINGLE summer in the last decade getting hotter every year.

For those of you that leave your gear on like dacs, streamers and SS amps I have a tip to try.   Every couple of weeks or so shut them down for 5-10 minutes and then restart. While I don’t understand why, I can say it did something positive to sound quality. A couple of designers I respect told me about this.  

Ok @gano I leave you with your opinions and conclusions. Enjoy your music! 

leave on---Wadax dac, server, power supply, two Ethernet switches, class d bass amps, Herzan TS active isolation, Esoteric clock.

if gone for over a week these are turned all the way off.

standby--darTZeel amps, battery powered preamp

off; tape decks, tape tubed preamps, phono tubed pre, turntables, power supply for field coil cartridge and field coil arm.