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

+1 cleeds, +1 jjss49

Amps on last, off first.

Waiting 30 seconds between preamp & amp too. Some may wait longer. This seems to work on my tube amps, preamp.

Unlike SS, which can take several hours to sound their best, tubes amps, preamps get there within an hour in general.

My old SS system took 3-4 hours to just start sounding its best...depending on ambient temperature. And this with a tube preamp/SS amp.

An advantage of an all SS system is that you can just leave it on.

I let my tube system warm up for 2 minutes before I listen. Then I don’t worry too much about what record I listen to first. My system (Don Sachs preamp/Evo 400 poweramp) usually hits its stride at the last track on the first side of an LP.

So about 20 minutes for me...not even close to an hour. So I’ll often listen to B side first.

Then off after I’m done listening.

My guess is that you'll naturally figure all this out after some time with your system.

SS takes days to sound its best. Days. With tubes it is more like hours. With records there is the motor. When you hear improvement across the first side of a record, that's why. Try turning it on, spinning the platter an hour or so. There will still be some improvement, but not nearly as much, and starting from a much higher level. The difference is the motor - and controller circuits - being warmed up. 

Follow the rule of thumbing thru
your Owners Manual if they still
provide owners one. My guess
is it has a tube warmer that stays
on regardless. They will say 5-10 minute warm up.
Right?

If you live in Texas turn if off!