Interconnects, some have directional indicators, why?

"A difference that makes no difference is no difference"

-famous Vulcan proverb

Is this one of those?

I’m sure there is someone out there who hears a difference when crystals oriented one way as opposed to another.

Can it horror of horrors perhaps even be measured?

Make sure contacts are similarly good either way or else its all for naught.

Enquiring minds want to know.

We all probably do actually.

I’d bet anything they would have a clear and huge effect on what anyone hears. Unless deaf to start with. Unlike orientation of copper crystals in wires. My dog told me so. For now I will merely just cup my hands behind my ears and enjoy.  Try it you'll like it.