Put me in the camp with those that can hear when some ICs or speaker cables are reversed. (Those using solid core wire).
Is the difference huge? NO. Subtle? Yes. But enough so, I prefer the direction that sounds best to my ears. As always, YMMV.
Which raises another question. If one buys into the proposition that unshielded solid core cables are directional does that necessarily mean stranded cables are also directional? Extra credit: if fuses in AC circuits are directional does that mean power cords are also directional? Even though most power cords comprise stranded conductors.
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