This idea of needing to have laboratory perfect hearing is total BS. Even without perfect hearing, we can tell the difference between real life and reproduced music. Hi-fi has a long way to go before you’ll need perfect hearing to tell the difference.
Turns out there are 4k ear cilia cells arranged in rows that are activated and allow us to hear full sine wave frequencies below about 20kHz. How far below varies from individual to individual and gets much worse as we age.
Turns out there are 12k of these same cells that are activated by frequencies far higher than 20kHz. So three times as many cells devoted to detecting sounds we cannot hear?
Turns out our hearing system is highly attuned to detecting leading edge transients. So while we cannot hear a full sine wave at these frequencies we do "hear" them, only this "hearing" is of a nature that is one of the many unconscious aspects of hearing.
This is why, in spite of the fact simplistic sine wave testing says we cannot hear them at all, the addition of a super tweeter does so much to improve perception across the audio range.
Interestingly, it turns out that while we lose the ability to hear high frequency sine waves with age, there is little if any deterioration in our ability to hear these ultrasonic frequencies. This is why for example my hearing rolls off yet I easily hear improvement from the Townshend super tweeter.
The number of examples of things like this- where experienced listeners destroy simplistic measurebators - is near endless. Anyone thinks some kid is a better listener able to pick a speaker, good luck with that. I guess since a baby in the cradle hears the best of all that is who they should ask for advice. So why is the OP wasting his time here then? Could it be he doesn't believe his own BS?