Side note, I have a friend who insists that hot tea (black tea, with milk; he's English) only tastes right when out of a white-on-the-interior mug or tea cup, and recoils physcially if you offer him the same tea in a mug or cup with any other color on the inside. ¯\_(ツ)_/¯ I do not try to argue with him on this.
Anyway, any number of "audiophile" claims to me are identical in substance to rejecting tea from an incorrectly colored mug. Certainly, take fancy power cables or interconnects, for two examples that supposedly can have a profound effect on audio quality.
It's odd to me that people think there's some sort of great mystery behind how sound works, or how well sound is presently understood. No, Virgnia, sound isn't dark energy.