Generally I like to turn on the one piece of tube gear used here (a Pendulum OCL-2) an hour prior to the session - although on a couple occasions I've used it without any noticeable difference in the results after around only 15 minutes after turning it on.
fwiw - All my gear gets turned off when I'm not using it.
I turn the stuff on as I'm setting up; usually end up getting signal through it in a half-hour to an hour. If I'm just starting a mix and plug signal through cold tubes, I notice a gradual change in sound for about forty minutes or so, sometimes longer with certain pieces. Oddly enough, I actually prefer the sound of certain "cold" tube pieces every now and then.
I also notice a change in sound quality as my clock and/or convertors "warm up"...particularly with my mixdown A/D (an Apogee Rosetta).
My Requisite L2M seems to want about an hour to stabilize. That's about how long it takes between when I turn it on in the morning and when I want to start capturing sound through it.
Yep and even then she'll drift a little bit depending on where she is placed in the console or racks. I found moving it out of my console and putting it into my rack with nothing above it or below it (by at least one rack space) keeps her the most stable... but the tweaker is never too far just in case!
How long do you let "tube gear" warm up before using it?
1 hour ?
1/2 hour ?
Leave it on ?
Doesn't Matter ?
5 minutes, but it continues to warm up for a couple of hours while I'm working on the sound, because I work on several songs before committing anything to a new master file. If I'm doing a single, it's probably an hour before I cut a new file, so the tubes have been warming up for an hour (while they're being used). The changes in sound after 5 to 15 minutes are so subtle you can still get to work on your sound.
for the most part i wait 20 - 30 minutes before passing signal through it. (that includes converters) i feel it is usually pretty locked in at that point, with only subtle changes from then on. i'm generally not printing anything within the first hour anyways.
some of the older pultecs i used to use, the owner would make me wait an hour before using them. gentle up front, then i would abuse them