Choice of Wire for Dedicated Line

Lak, I do NOT find that the Belden 83802 is directional. ALL the PCs I've made sound the same. Since the cable is NOT marked, I'd imagine that 50% are each way....interesting about the Romex, though.
Red, do you mean that USED Romex sounds worse when reversed?
That I could buy in a hurry.
Cheers.

The stuff we get here (New Zealand)is directional from new, and it is possible that the Romex you get there is manufactured differently, and may be of quite different quality. The stuff we get here is usually called TPC, not Romex, and as some will know, stands for tough pitched copper - ie. made by archaic methods.

...swept off the floor at the smelter! A gazillion crystals/inch!

OK, I’m sure the 43’ run of Belden 83802 is burned in and sounding good. In a blind A/B comparison test Belden 83802 (v) 10 gauge solid UV and Romex with identical Hubbell 8200 cryoed outlets I cannot hear a difference, they all sound good! That’s not saying anything negative about any wire.
I would guess that if one were to make a power cord, the Belden 83802 would be the way to go, as a matter of fact I own one and really like it!

Redkiwi:
Thank You!, for your response to my query. Your experience is greater than mine, but....I am just getting to the point at which I was beginning to wonder about the characteristics you describe as "brighter and with a coarser grain". I have made too many changes (in the midst of a house remodel) to be sure, but your words strike me as having the distinct ring of truth.

Your methodology of testing Romex makes perfect sense. I will definitely be using your method.

I can understand your remarks about grounds. I had not considered the issues of the voltage variation, but I can easily understand why you would find differences. For myself, I have found the greatest success with dedicated circuits coupled with true isolated grounds, seperated from the remainder of the household circuits. I understand the issues of potential ground differential, but I have placed the rods in close proximity, and have done my best to create identical parallel systems.