I only turn my tube equipment on when I going to be listening. A standby switch is nice if you have one (I do on one of my amps) but I would still turn it completely off if I wasn't going to listen a for a long time like for a day or two.
I would not turn an amp back on (like if you were changing cables or ?) for at least 5 minutes and probably give it a half hour and I wouldn't do it that often.
Another factor in how long tubes last is how hard the designer has chosen to run them.
When you get a new set of tubes I am a firm believer in NOT running them 24/7 or close to that just to speed up the breakin. I think best, for sound and longevity, is to run them 3-4 hrs then let them cool completely (4-6) then start up again. Do that for just the first week or so.
I would not turn an amp back on (like if you were changing cables or ?) for at least 5 minutes and probably give it a half hour and I wouldn't do it that often.
Another factor in how long tubes last is how hard the designer has chosen to run them.
When you get a new set of tubes I am a firm believer in NOT running them 24/7 or close to that just to speed up the breakin. I think best, for sound and longevity, is to run them 3-4 hrs then let them cool completely (4-6) then start up again. Do that for just the first week or so.