"Test measurements of simple sinewave performance, and gross distortion measurements are no adequate in the least to determine the performance of these components. There is no test equipment made that can duplicate the ear-brain ability to detect subtle difference in complex waveforms. And, even if there was sophisticated equipment that could do it, there would be no way to quantify it."

This is an absurd statement based on absolutely nothing but someone's preconceived foolish notion of something he doesn't understand.