Too much emphasis on the price of items and not enough on the sonics in that quiz. An "audiophile" is someone who likes to listen to music on a sound system whose performance he or she enjoys. That has nothing to do with price, and everything to do with performance. The two are not the same, just like price does not equal value.
The only other thing I would add is there is no such thing as an "audiophile speaker" or ~amplifier or ~power cord, or ... well you get the idea. Audiophiles are people, not components or accessories.
100% agree on the price. Especially with headphones. When it comes to speakers, some of the most expensive and exotic designs are nothing more than hype. Modern technology and manufacturing had enabled those with the most limited budgets to enjoy very high quality systems for a low price. There are really good speakers in the under $500 range that could outperform speakers costing 4x as much. Think back to the infinity primus series. Obviously, all budget speakers will require cost cutting measures, but it's where that cost cut comes from that determines the quality. Likewise, a pair of speakers costing 20k may have exotic wood veneers, which add 1000s to the price tag, but nothing to the sound quality.
Headphones are another story. Looking at response graphs and distortion measurements of headphones on headroom, one will quickly find the pricier "audiophile grade" headphones perform much worse than a pair of well designed studio headphones. I'm fairly certain several companies will also use the exact same components for more expensive models, yet charge a higher price, Grado comes to mind. Several of their headphones use identical drivers, and display identical frequency response curves, but might have bigger ear cups, nicer wood, etc.
Expensive amplifiers, marketed with brochures filled with useless terminology, expensive DACs, or worse, "magic" USB cables to connect them, are everywhere.
With modern solid state amps, and digital recording/playback mediums, the major determining factor in sound quality is the speakers themselves. The cheapest laptop DAC paired with the lousiest op-amp will sound exactly the same so long as it has an acceptable SNR and it isn't driven into distortion.
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