Directional wires/cables

I use Kimber Silver Streak(s)  all the way through (CDP-pre-amp) and this thread got me curious, and from the searches that I did they were saying that the heat shrinked "Silver Streak" logo around the cable should read so that the 'S' is at the end that the source is on.  I just went and checked and that's the way I have mine; I don't remember if those cables came with directions with them and that's why I had them all pointed that way, or if it was just by coincidence.

And actually I do remember, many many moons ago, hearing or reading that cables are directional, but that over time it would "learn" the other direction.  "I don't think "learn" is the term that was used, but it's the best I can think of at the moment.

. . . and I just did a quick search on speaker wire directionality , specifically Kimber 8TC, and came up with this discussion right here on A'gon . . .

https://forum.audiogon.com/discussions/signal-direction

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.