I'm getting power from true sine wave power inverter. my expectations as far as sounds go through the speakers and headphones isn't huge I know its not going to sound optimal. I have a Peavey ValveKing half stack but I had to send it off for repairs and there's no telling how long it'll take to get back but I'm just going to be using this as a travel option and then I add on for my ValveKing. and also to do some recording obviously