I am new to using a Fractal products. I am using a Yamaha DXR10 for amplification with my AX8. When I connect the AX8 to the DXR using the 1/4 inch outs, I am getting a loud low humming. I can connect my Line 6 HD500 to the DXR10 using 1/4 inch connections without any hum. Maybe I am overlooking something. I am looking for some advice on resolving this problem.