@willemj I know, but, when I used another power cord - a standard power cord, not a thick audiophile one - I was able to influence the noise by moving the cable, twisting the cable, and then I realized, it was acting like an antenna. So I *think* it contributes to my issue. Every little bit helps, and I will take what ever it takes - right now I'm taping aluminum foil all over my racks and it appears to be improving my situation. 👍🏻🤓✅