Hopefully Ralph (Atmasphere) or Gary (Hifigeek) will weigh in. My practice, FWIW, is that I will leave my amp on unattended for up to 4 or 5 hours -- never if I am out-of-town.
Seem to recall that it's a bad practice to shut a tube amp off and then restart it unless waiting for at least 5 or 10 minutes. The "wear and tear" of a tube as I understand it is the tube's innards responding to hot and cold, which in turn, causes the innards to expand and contract.
Tube failure also occurs because of arcing. I do not know what user-related factors (if any) cause arcing. I for one would love to hear back from Ralph or Gary.
Bruce
Seem to recall that it's a bad practice to shut a tube amp off and then restart it unless waiting for at least 5 or 10 minutes. The "wear and tear" of a tube as I understand it is the tube's innards responding to hot and cold, which in turn, causes the innards to expand and contract.
Tube failure also occurs because of arcing. I do not know what user-related factors (if any) cause arcing. I for one would love to hear back from Ralph or Gary.
Bruce