Do you keep your amps and preamps on all the time

do you leave your car running in the driveway?
never made any sense to me. sometimes mine stays on all day when i intend to use it and never do. depends on your listening schedule. (i do leave my crossovers on 24/7) warm-up is necessary to acheive max performance, but 24/7 is a waste of juice and in the case of tube gear, tubes. just my 2 cents kurt

I leave my transport and DAC on all the time. The Kora doesn't have an on/off switch on the front and is meant ot be left on and in standby mode.

I only turn my preamp and amp on when I'm getting ready to use them though. Too much heat, energy and tubes to waste when not in use.

I only turn them on when I use them. I give a few minutes warm up before I play.