Not a dumb question; wifi and CPL internet connections are suboptimal when near audio systems. By coincidence, last night I bumped into the following post which walks through one person's view on "electric gremlins" he found at 470hz (etal.) from a power company's control tone:
The poster, DarqueKnight, also posted his treatise on the effects of some cables, electric outlets, power regenerators, fuses, etc. I will leave it to you to interpret his postings.