I don't really agree. Those audiophile companies aren't exactly lying in their product specs. At least not this one. These people aren't claiming that their 20

I don't really agree. Those audiophile companies aren't exactly lying in their product specs. At least not this one. These people aren't claiming that their 20A cable supports 200A, for example. The claims are always subtle and about things you can't measure, like "that your system can deliver maximum performance without losing sound subtleties due to irradiated noise" in this case. Which sure, might also be the case for the €3 cables I just bought yesterday for my TV. So, these cables are most certainly better than my €3, but of course they aren't 1833 times better. But that's just how the law of diminishing returns work. This is, of course, an extreme case. Also, I feel like most of the "lying" that happens within this specific industry is perpetrated by the consumers themselves: "I can hear things with this cable that I couldn't hear before" on forums and so on. I'm not really into this world (I still only use Airbuds...), but as an electrical engineer I often see this claim, but I rarely see any manufacturer outright-lying. Confusing marketing? Exaggerated claims? Sure... but nothing close to "Lamborghini [...] claiming their cars had 50 million horsepower".