Music rarely goes below 50 Hz, and even when the note being played is nominally low (a piano starts at 27.5 Hz), the fundamental is often very weak and what we hear is actually mostly harmonics.

yeah... I built a custom subwoofer for home theater use, and found out that while for movies it's pretty nice (it goes down to ~16hz without distortion and ~10hz with some reduced amplitude) for most television and youtube content it's atrocious. Many mastering programs apparently don't do that high pass filtering, so there's a huge mess in the low frequencies that they just somehow never notice.

(A virtual stage doesn't change the result).

Anyhow, he bluntly stated that all the audiophiles who buy expensive wires are wasting their money because there's no friggin way you can tell the difference.

The auditorium was in a rage fueled uproar. Half the folks were "audiophiles", and couldn't afford to have their life choices, and thus intelligence, questioned, it seemed.

Those of us who weren't audiophiles were quite entertained.

Of course it technically makes a difference. But as your hearing ends at 20khz, assuming you have a ton of ringing on the cable (say 9 meaningful reflections), that *still* wouldn't do anything until a cable length of a full kilometer. Which you really shouldn't have between your amp and your speakers, for obvious reasons.

Oh but you need the little stands to keep the cable off the floor. /S

Calling himself an "audiophile", I suspect he probably owns a stereo-test-and-demonstration CD and he would have caught it right away if it was a matter of the speakers being wired right-to-left. Reversing the (- +) polarity on the pairs of wires for each speaker would cause phasing problems at best, and possible long-term speaker damage at worst.