@tweak1 Clearly you missed my point. Being that current (AC) constantly flows in two directions in audio, even if such a thing as directionality existed, it would make no difference.
I'm going to start selling the latest audio tweak. You can be the first to sign up, for only $500K I'll transplant you ears of a one year old rat terrier, so you can now hear the difference between 6inch cable and a 6.5inch cable as well as too much dust having collected on your tweeter.
In the mean time I'll enjoy my system, all connected by Canare cable, a cable used on something like 99% of studio microphones. If it's good enough to record, it's good enough to play back.