I think another brick in the wall against you guys is that your position comes off as so "negative". Cables don't make a difference, players don't make a difference, amps don't make a difference, then what does?
I think, rather than banging on how the things they are going on about don't matter, you may put the emphasis on giving them something that DOES matter to try out. Heck, if the audiophiles are so open-minded about something like "cable burn in" making a change for the better, who knows if they won't give something like
this a serious try?
Two comments:
(1)
Raw sound quality isn't everything. I admit it, I married what I thought was a nice looking lady, and I think she still is (and more). I don't want stuff that disturbs my tastes with poor appearance. Looks aren't eveything, but they matter. Particularly with regards to headphones, earphones and portable players, things like comfort, unobtrusiveness, battery life, and durability matter a lot. None of those things are very ABX-able although some of them may have been subject to some kind of a controlled test during their development.
(2) The problem with a lot of audiophile SQ evaluations is that they are highly prone to
both false positives and false negatives. There is a lot of focus by rationalists on the false positives, but the
false negatives are there by the boatload, and they matter just as much if not more. The congenital absence of level matching, time synching the media, and allowing sighted bias which includes both sight and life's experiences, (many or all of which are irrelevant to everybody else), can easily be shown to mask audible differences that are really there!