2. amps-preamps
  3. 1080574169

Please advise - power for TUBE amp?

I know that similar questions been asked before, but I can't find the same scenario:
I've recently switched from ss amp to tube 300B SET amp.
I kept all my SS gear ON - 24/7.
What is the best way to do it for the tube amp?
If I listen for an hour, than I have to stop for a couple of hours - is it better for the amp and for the tubes if I leave it ON without any music playing (I know that for class A - this is when it's going to get hottest) or should I turn it OFF? What will stress tubes more - 2 hours of idle power or an extra switching?
I don't care about few extra $$ for the utility bill, but I do care for the longer life of the 300B tubes ($200 for a matched pair of JJ) and a better performance.
As always, all responses are greatly appreciated.
zoya

Showing 1 response by jax2

jax2
3,031 posts
 
I'd guess it depends on the amp and circuit design, but from what I understand turning tubes on and off does put stress and wear on the tubes above and beyond leaving them on. Obviously if you leave them on for several days without listening that point is moot. The best advice I've read is; if you plan on listening on and off for a few days, leave them on 24/7. If you know you won't be listening over a period, turn them off. My 300B SET's sound best after about 2-3 hours of warmup time. I don't notice much of a difference after that. YMMV.

Marco
More to discover