Where I live the energy is pretty dirty. It was causing problems with my recording. Pops and Clicks. I bought a APC 650 Back-up and Surge Protector and it cleared up the pops and clicks. The problem now is any tracking that I do now will not sync with any recording done before the APC was added. I disconnected the APC and everything records in sync again, the only thing was the pops and clicks returned. Anyone have any idea why this happened and can it fix it?