Technically, a weight on top of AV equipment's cases will change the resonant properties of the chassis but that does not produce audible effects unless it's on the speaker cone. The author considers this and dismisses the possibility because “rocks not heavy enough”.
Also, a sufficiently large rock will affect the performance of any Hi-Fi equipment.
Sometimes I think the whole industry of audiophile is just a bunch of baloney. Reminds of chifi IEM the KZ ZEX pro or something where people were praising for the improve sound and more drivers. Turns out only 1 driver is used and the rest are just there to justify increase in the price. It being no different than their cheaper version.
Audiophiles are 100% targeted with tons of nonsense products, mainly because sound is such a subjective thing beyond a certain level. That's not to say all hifi products are placebo-driven, just that the industry is rife with them.
Well, my cheap Bluetooth speaker vibrates terribly and weighing it down helps. This will not help devices which already have vibration-preventing features, such as rubber feet or acoustics-aware housing design. And only some rocks will wobble depending on the base shape and point of mass.
I planned on getting my dad a sound bar for his TV on his birthday because the TV he uses, the plastic grill over the speaker vibrates something fierce and it sounds like absolute garbage any time something with any amount of bass plays. But maybe I can just glue some rocks to it 🤔
He could afford hundreds of dollars' worth of placebo just for this single article. Either there's an undisclosed sponsorship deal, or he has enough money to fuel all his means of self-delusion hobbies.