Hey guys, I have a guitar rig question, not sure if this is the right place to post this question so forgive me if I'm off here. I recently started micing my tube amp in a back room away from the stage so I can crank it getting the tone I want, but still giving the sound guy full volume control in the house. During a practice the day before everything sounded great but I had forgotten to test my rig with the stage lights on. As soon as they turned those on I had a good bit of noise coming through. The noise quiets down when I put my hand over my strings. Indon't want to compromise my tone, but I don't want the noise either. What would be the solution to fixing this problem? Thanks in advance! P.S. I don't have another power source I can plug my amp into at the moment unless I buy some kind of portable power supply.