Than you for setting the record straight in regard to the person, I referred to the lab, but I still have my Stereo Reviews where he stated he could not tell the difference between high quality amps.
I held Julian Hirsch in high esteem and doted on every word he wrote, but it was revealed that his hearing was not the very best, as knowledgeable as he was. I only know what I read in "Stereo Review".
To have had Julian Hirsch as an instructor certainly adds validity to what you write, but with all due respect to you and Mr. Hirsch, his hearing was not the best. I read him for many years, and believed what I read. Much later I discovered he was in error on some of his amp reviews. Since I'm positive he would not lie, his reviews meant he stated what he heard.
Out of the many years I read him, those were the only errors I discovered, and since he told the gospel truth in regard to what he heard, the only conclusion one can come to is, "his hearing was not the best".