None of this is relevant for audio. Despite what some audiocultists would have you believe CD quality is basically as good as it gets, you cover effectively 100% of the (normal) human hearing range, both in frequency range and dynamics. Ok, ok, technically not 100% of the dynamics, but few people care to listen to "distant ventilator on a quiet night" followed by "Airbus A380 taking off from the point of view of the jet turbine".
Of course the quality of reproduction matters a lot, playing a CD through cheap $5 earphones is not going to sound great. But even there the cost of decent quality electronics keeps dropping and dropping. You can get a good quality DAC for a trivial amount of money (and stand alone DACs are still usually overpriced because they're for the niche/enthusiast/pro market, everybody else uses whatever their smartphones/laptop/desktop has integrated).
Buying ultra high-end, ultra-expensive "audiophile" equipment these days is effectively like buying mechanical watches. It's because you like the luxury and craftsmanship, or you're making a fashion statement. Apple knows that, hence these AirPods. If you're about function over form you'd sooner get a cheapo Casio quartz watch.
And there's nothing wrong with that, it just annoys me when audiophiles try to justify their fashion statements with pseudo-science.