STANDBY on tube amps - what's your practice

Standby PRE--on 24/7

AMP has none. Wouldn't want to demo my rig to a golden ear until my amp had 30 minutes to toast up

I have BAT pre and BAT tubed cd player. I asked BAT this very question and Viktor, owner and designer, responded. He said that I may completely turn off equipment if music plays back as it should within 15 minutes of turning on. He also stated that there is no way of knowing how the tube life is affected with the equipment being turned on and off versus standby. With that being said I keep mine in standby unless I am away for a few days.

I have a Spectron amp which I always leave on, per their instructions.

It's very important to wait until your tubes' heaters warm up their cathodes, and create an electron cloud around them(in "standby") before applying plate voltage(B+, or operating voltage). Otherwise you'll wear out the tubes via "cathode stripping". Your procedure is an excellent practice of that understanding. My tubed equipment remains on "standby" all weekend, or over holidays, because I know I'll be listening to the system a lot during those periods. Other than that: I turn them off, and back on("standby" for a few minutes, then "plate voltage") about an hour before I plan on listening to my music. SS stays on 24/7/365(unless I'm leaving town).

Great replies - thank you.
there still seem to be some significant differences.
Keeping an amp in stadby most of the time (even days on) is surely not what I was thinking of doing...
My thinking was that even in stadby - there is some Voltage and thus there is some "wear" on the tubes. That's the main reason why I never keep my amp in standby if I know I won't listen to any music for say...6-8 hrs. (like overnight or while at work).

Please keep your comments coming - good learning