При Вашем отношении к "продавцам" весьма странно, что Вы цитируете чувачка, который намекает нам о том, что
"надо просто купить мои новые звукопоглощающие панели и вы перестанете слышать разницу в проводах"
Но даже он вполне признает обе точки зрения -
Over the years I have seen many "religious" arguments in newsgroups and web forums. The science-minded objectivists assert that everything can be measured, and things like replacement AC wall outlets cannot possibly affect the sound no matter what the subjectivist "tweakers" claim. The subjectivists argue back they are certain they can hear a difference and the objectivists are simply measuring the wrong things.
It now appears that both sides have been right all along! Some things really are too insignificant to change the sound audibly, but often the wrong things have been measured too. The room you listen in has far more influence on what you hear than any device in the signal path, including even the loudspeakers in most cases. It makes perfect sense that the one thing neither camp has ever considered - acoustic comb filtering - turns out to be the real culprit.
