12-26-2021, 01:51 PM
You might want to try plugging into an outlet on a different circuit in your house. Ive found that some of my home's circuits are noisier than others. Some folks are able to track down the source of the noises in their homes, but Ive never been able to do that with complete success. What I do now is to use a "central" (known to be quiet) outlet when playing my radios.