Hello all. I have a question regarding the use of XLR out on my Ampeg v4b classic. I understand that it's a BIG NO NO to run the head without a speaker load connected, but does this rule apply when the head is in standby? My understanding is that while in standby, voltage is not sent to the power tubes (but possibly to the preamp tubes?) If this is so, then while in "standby," can I run my head to the board via the balanced out (which I understand is the post-preamp signal, without a speaker cab/load connected? Thanks for any help and info!