rule of thumb: how long do you leave a tube preamp on versus turning it off then back on?


I just upgraded to an Audio Research REF 10 with 12 tubes and I am wondering how to best preserve the tubes. How long sitting turned on is equal to the wear and tear of turning it off then on again? I had a Rogue RP 7 with just four tubes so I didn't worry about this issue so much, I just turned it on when I began to listen then off at the end of the evening. Now I'm wondering where the sweet spot is? Away for a hour, two, three, turn it off when? Am I over-thinking this issue?
128x128wokeuptobose

Showing 2 responses by tomcy6

I suggest that you call AR and do what they tell you.  This question comes up frequently and advice is all over the place on it. 

I'd also start saving up for a set of replacement tubes.  Not that you need to worry about them, but it will be nice to have the money set aside when you do need them.
For that average 2 hour gap I wonder exactly what OP asked. Do I leave it on or shut it down? I usually turn off tubes but leave on SS. I’m sure it would be heavily tube and equipment dependent. Some tube types are more tolerant to startup and some equipment is kinder.

That’s why it’s always best to call the amp’s manufacturer and talk with them about your listening habits and get their advice as to when to leave it on or turn it off. What somebody on Audiogon might have done doesn’t really help much.