Is it a OK to leave tube pre-amps powede up 24/7

@audiotomb,
 I understand a concern of vintage NOS tube dealer, but at the same time you never know if one will be running them 24/7 non-stop, but according to most of contributor's here with "deep experience and knowledge", some, as turn out, definitely will...

Cant's tubes short, and even explode?  Is it wise to leave them on if you are not around to leap up and turn the system off?

I'd listen to czarivey;because he's right. Period.The end.

I've yet to see a signal tube explode! For that matter its really really rare even for a power tube.

I've been servicing consumer electronics since 1974. I've yet to see a fire in **any** preamp, tube or solid state that was not caused by a lightning strike. Not saying it can't happen; I **am** saying that it likely will not be caused by a tube.

A tube power amplifier is a different matter. Power tubes can arc and cause associated resistors to heat up and fail (these days, responsible manufacturers use 'flame proof' resistor types in those locations).

But we're not talking about tube amps, we *are* talking about tube preamps.

Amen! My thoughts and experiences also Atma.