I'm running my bass to a Boss Chourus then to a Morley A/b to my BMax and an old Peavey Tube pre, then combining those to an Ashley mixer, then to my QSC1 input 1. When I switch to the Bmax there is absolute bliss...however when I switch to the Peavey which I have overdriven I get huge buzz coming from that channel. I've been told to get new cables...mine are somewhat new to begin with. I remember seeing a complaint somewhere about grounding on the Morley on another sight but of course can't find it now. Anyone have any suggestions.