Hello, so by process of elimination i found a hum from the factory supplied usb cable when running my LT into my amp. I have the LT hookup directly to my monitors for the usb sound and have the helix in stomp mode for the amp. I had a ground loop with the helix itself but i just changed power outlet on the amp and that took care of a lot of hum that hum. now I'm just getting it from the usb. i tried unplugging my power chord from my Mac but the hum doesn't stop. so if anyone can help thanks. just to be clear I'm running to different paths for sound. Audio from laptop to helix to monitors and the guitar to helix to amp.
