@soblivion Hey sorry for the late response to this. I'm working off of a windows 10, no particular brand. It starts as soon as I try to listen to anything coming out of USB. It seems like the noise only happens at certain frequencies. I tried a new USB cable and port and it made no difference. All of the other sound devices are disabled. I dont see an option to uncheck allowing the computer to turn the device off or a power management tab. I don't think these are the issues though.
A little more info about my set up-
Stomp plugged into Windows10 via USB. KRK Rokits as output. Noise comes through headphones and speakers, but only the output from the USB. If I play clean guitar tones I dont hear the noise but if I record the same guitar tone and play it back, I hear the noise. If export the recording and listen on another device, I still hear the noise meaning it's not just the output that's effected.