My band is doing a little 3 song demo pretty soon and I want to use my berhinger V-amp which sounds good and clean enough for this. I'm doing my guitar tracks at home to a metronome first. Just wondering if it's safe to use a tube power amp with it not plugged into a cab. I was planning on running my berhinger into my peavey classic 120 tube power amp which has a direct out XLR connection. I would think I'd get a little smoothing out of the digital sound with the three 12AX7 preamp tubes inside my power amp. I think I read some where that a tube power amp needs to be plugged into a cab while the standby is off but i'm not 100% sure.