I would say that the same people who claim to be able to 'train' their ears to hear the difference, put that training to the test.
if it's really a matter of conditioning and exercises designed to make the ear more sensitive than normal, why aren't we getting those?
let's see what everyone's preparation for the listening tests are comprised of, let's have a tutorial, right?
I mean, forget going out and listening to live, unamplified musical instruments in a club setting, forget going to your local hi-fi dealer's sound room and checking the uber-goodies for their "tonal superiority" or "air" and forget earphone references, we're on a mission here!
How does one gain this unique ability among audiophiles, that audiometrics has certainly eluded the population, how does the madness start?
autosound 2000 briefs? (uncomfortable, in the crotch)