I used to be an Workers' Comp adjuster and have seen many hearing
charts which are deemed to be normal by ENT (Ear Nose and throat)
experts but look quite different from one normal individual to
another. Many charts differ by + or - 3db and greater throughout
the range tested. Note that W/C ENT doctors do not test the entire
spectrum from 20HZ to 20k, but you still get my drift.That is why I have to question the "golden ears" who worry about
teeny tiny details like capacitive reactance in speaker wire.
We are talking pf per ft.!! Even a dog's ear would not be able to
hear the difference between 20 feet of high-end speaker wire
and 12gauge lamp cord.