I just got a Behringer eurorack UB2442FX. It's an awesome board so far. But, there is a problem, but its a somewhat big/annoying problem. When I record straight into my sound card from my audio board I get this buzz sound. But it's not my audio card because I tried it with another audio board so it's not the card. I don't know what the problem could be, I tried different mics, cables, and just to make sure another audio card. My gain isn't up too loud, and my AUX knobs are all down, because when they are up I get an Excessive buzz. Has anyone had this problem before? I am new to this forum and to the whole recording process.