Looks like my favorite example has disappeared, but there are always these: http://www.audio-consulting.ch/?Parts:Woodlenses
There is a core group of audiophile/EEs who design DACs, amps and the like and who do know what matters for sound quality, and there's a whole pile of marketers who try to jump on the train with gold-plated power cables and (apparently) expensive chunks of wood. The engineers don't seem to care to call out the marketers on their BS. Maybe they just aren't effective at it.
As a result, the public can't really tell the difference between true and false things, like how gold-plated headphone connectors are more conductive and durable than the cheap version (and thus sound better), but gold plated power cables have no effect on sound quality. If they did, there might be a lot more audiophiles since there is some semblance of authority about what is worth paying for. The engineers are sabotaging their market by refusing to educate customers.
Then there's the blind. One of my ancestors was a blind Spanish classical guitarist, played in concerts often. So for them? They can tell you the brand of headphones you're listening to from the other side of the room. And that's nothing. They also think faster, listen to sound at a much much faster rate than ordinary speech. Like 4x? Something. Sky's the limit. And when they speak to each other they speak much faster more like the speech synthesizer.
No, if you want to have really clear audio you'd better get one of those Synergistic Research cables [1]. For a mere $10.000,- starting price (6 ft, add $1000/ft if you want a longer cable) it will be as if the musicians are sitting on your table, eating your cookies and petting your dog. It's the Quantum tunneling which does the trick, see? They kick the atoms into the right shape using a Tesla coil and, being obedient little atoms, they stay where they're told. Or something.
[1] https://www.synergisticresearch.com/cables/srx-cables/srx-ac...
50 shades of quantum tunneling
Also, from the manufacturer's brochure: Unlike conventional power cables, which have propagation speeds that are less than 50% the speed of light, the Valhalla 2 Reference Power Cord has a speed of 91% the speed of light.
[1] https://audiofi.ca/products/valhalla-2-power-cord?variant=34...
EDIT: On a more serious note, check out https://www.audiosciencereview.com/forum/index.php for real testing, where the dollar store speaker cable performed (surprise!) as well as the fancy cables. The fancy cable company was not happy.
Thank God somebody is making these. Imagine if we had to wait almost twice as long!