Just wondering if any of you tube amp users are impatient like me, and don't really power the amp up in standby mode, waiting for a minute or two, then switching the amp out of standby. Is it really that hard on the tubes to simply power the amp up and wait until you hear the amplification? Also, if this is hard on the tubes, is it just the power tubes, or the preamp tubes as well? I've noticed on my SVT-3 PRO, which doesn't have a "standby", that it takes about 30 seconds after powering the amp up before it kicks on. It's as if there is some kind of protection going on, maybe waiting for the tubes to warm up?