Leave tube amps always on?

His reasoning was that it uses considerable more energy to turn on/off on a regular basis.

Do others agree?

Uh, no. Not even other manufacturers. He should have done his math before saying something like that.


Now the amps probably take about an hour or two to sound their best; if this is the criteria (other than just simple warmup which takes 30 seconds) then the answer is still 'no'.

I dont need any more convincing. Mr. Berning’s ZOTL preamp/amp technology is mind blowing performance, like nothing I’ve ever experienced sonically and I don’t want that burn out faster lol.

Being an owner of ARC tube gear, my response is NO!  My gear is probably 80% of the way there after 20 to 30 minutes after start-up.  After an hour, my gear is all the way there.

I echo what another some of the posters said about tube life.  My amp uses KT-150s, which are expensive power tubes that, per ARC, have a service life of 3000 hours.  Too darn expensive to leave my gear running 24/7. 

I am also concerned about energy costs and even safety.

So, ... NO!!!    

I have a pair of Futterman OTL3s, modified from pentode to triode. 

If I’m listening and have to walk away for up to an hour or two, I leave them running. 

Otherwise, I turn them on, wait a half hour, and when I’m done, they go off. 

Reasons:
- fire hazard
- tube wear
- waste of electricity

aj,

The arguement for leaving tubes on is that they sound better fully warmed up not that the tubes consume excess power when you turn them on. Frequent on off tends to reduce tube life especially power output tubes. 

You should perform some experiments by listening to your LTA amp from a cold start vs fully warmed up. Can you hear a difference? What is the minimal acceptable warm up time? Please report back what you find.