Anyone have the Answer?

Preach it Brother Carbon.. LOL You've pointed out the demon, and it seemed to need an exorcism.. Be gone. or is the A Gone..

https://www.youtube.com/watch?v=f0ZS9sImoOE

These two had it easy, only the one demon at a time.

They make products to measure your ac lines for sure but i can tell you that a good conditioner will improve the sound of your system whether the line is a good one or a noisy one and you do not have to spend thousands to hear the difference.

First things , I had installed dedicated 20:amp lines awg 10
with and this is key 4 wire ,dual ground one common the other a insulated isolated ground with copper gold plated outlets .
a night and day difference in detail as well as silence. That was the
best value per $$ spent in Audio ,and I hav3 had a friends AQ5000
line conditioner ,slightly better then my line by maybe 2-3% 
if it is a great recording .

What I been saying for years, the single most cost-effective power improvement is to replace the standard outlet to outlet circuit with a dedicated line. The details of wire, gauge, etc are very minor compared to this one thing.

Here's your answer. I believe a balanced power unit makes sense. I was able to obtain mine for under $1K. My system is completely black.

https://equitech.com/what-is-a-balanced-power/

Also, watch this......

https://www.youtube.com/watch?v=ITkuBgFtTjs