Directional wires/cables

If dealing with -0 Crystal Copper or 6-9s pure it’s drawn in a specific type procedure in a nitrogen atmosphere , I don’t know the exact procedure ,there are only a handfully of foundries that do this.and drawn in that specific direction , and slightly better they say the cable needs to be first run in , then  maybe compare it would not be a huge difference maybe low level detail. I will inquire though for my own curiosity , my WireWorld  Eclipse cables have the arrow going from the amplifier to the Loudspeakers ,and many others do this also.

Matthew,

I've been told the same thing by a different cable company.  When reading the writing, the flow is left to right.

As for the "learning" the direction, I've heard that as well.  While electron flow over time will affect the grain structure and stresses, It would take a LOT of continous current (high amperage) and building up of heat to completely alter the structure (i.e. annealing the metal).  Minor changes (key word being minor), that is dependant on the material, impurities, and initial grain size, but does happen.  Thus the infamous cable "break-in" period.

@audioman58  - 

The nitrogen atmosphere in the drawing process is to prevent the surface of the copper from oxidizing.  If the surface is oxidized, it will have a higher hardness level and create smaller grain sizes when drawn.  Smaller the grain size, the bigger the impact on the electron flow.

There are a lot of good videos on Youtube about "wire drawing" if interested.

The brands of interconnects with directionality, as specified by the manufacturer, that I have, have all stated that the reason for the directionality is that the shield is grounded at the source end and is floating at the destination end.

This reason makes sense to me, from an interference shielding reasoning.

None of these brands have claimed that the reason for the directionality is that it is about a specific grain structure.

BS TO directionality! I RECAL AUDIOHOLICS SAID IT WAS bs
AND THEY TESTED THE AQ cables w/ the battery and they made MORE noise w/a battery installed than not ! AQ cables are proven to be snake oil rip off it's like Bernie Madoff figured out how to scam and not get in legal trouble ! LOL 
but you will hear the cult members insist they work reminds me of Scientologists! 
cryo ? may work many famous indy car engine builders use it has LONG history of believers i heard of it w/ race engines 50 years ago!
I understand GR research offers it ( cryo ) free if you get cables fr them and theirs are awesome and actually a bargain! & NOT SNAKE OIL! ck them out ! I think I read iF YOU GET THEIR diy CABLE KIT AND MAKE SOME DIY YOU CAN SEND YOURS AND THEY WILL INCLUDE THEM IN A CRYO TREATMENT FREE?