DDJ-S1 Audio Issue

I'm using a MacBook Pro and I have powered Mackie speakers. I'm also using the XLR outs of the controller. I hear a buzz in the speakers as soon as I turn the controller on. I've tried using different power strips and supplies with no luck. When I unplug the power supply from the controller and let it run from USB power I get no audio at all. Has anyone else had this issue or know how to address?