@mahgister
Thank you for your explanation. One question, if I may: having had a positive experience from tethering 2 AA 1.5v batteries to my RCA cables with polarity from ‘-‘ to ‘+’ and agreeing with your explanation on minerals I was wondering whether you might have any view on their impact on electron flow within the cables. It seems to me that there might be increased directionality and less turbulence (along the lines of your dithering explanation). I am obviously speculating, not having an electrical engineering background either.