Of course it’s fallacious. That was my point.This is completely fallacious. They measured the THD at 1kHz at 1W of power and use that to determine if an amplifier's technical performance is "better" than another. It was a fiction invented by the industry to deceive consumers. The kinds of measurements that do correlate with sound quality have been known since the late 1970s through research by people like Jean Hiraga. You can read one of his articles (in French) here: http://6bm8.lab.free.fr/Documentations/Revues/Audiophile/1977-1988/15/BONAMPLI/BONAMPLI.html
Julian Hirsch’s approach is what precipitated the creation of TAS, Stereophile and the “high end.”