Do the results prove inaudibility of amplifier differences below clipping?
It’s impossible to scientifically prove the lack of something. You cannot prove that there is no Bigfoot monster, because no matter how hard you look, it is always possible that Bigfoot is in the place you didn’t look. Similarly, there could always be a amplifier combination or listener for which the test would show an audible difference. So from a scientific point of view, the word prove should not be used in reference to the results of this test. What the test does do is give a degree of certainty that such an audible difference does not exist.
