Today I was practicing alone before band practice and I had about an hour between the two sessions. I shut down the rig and began to think; What is the consensus regarding standby mode vs just shutting the amplifier down and turning back on again an hour later, 2, 3? In fact what is the most amount of time you would leave a tube amplifier on standby vs just shutting down? I know, at least I think I know, that standby just reduces voltage going through the tubes thus improving life of the tubes.. but what does turning the amp on do to tube life; Anything ? Thanks for thoughts.