I have my interface (USB powered) on top of my profiler and the profiler is directly above the computer. The profiler and computer is plugged into the same main circuit but each one is on a separate surge suppressor. I've never heard of a PC causing noise before. Could be your lighting, ceiling fan, or appliances. ??
No, its coming from PC's PSU Im 99% sure. I tried to get closer to the pc and the static noise gets worse, while if i move away it fades away completely. Affects both kemper and DI, it just messes the signal on the instrument cable since its not balanced. Can you tell me what PSU do you have in your PC since you dont have any noise?