05-29-11: PhiljoletI agree. I don't pay attention to the sound *per se* so much as pay attention to my emotional response to the music. Moods and other things vary so it takes multiple listenings over a period of time to be sure.
NO, I have not started doubting my ears yet.
I think the best way to 'listen' is to not 'listen' specifically for anything, give it at least two weeks and then switch back, keep the conscious mind out of it ...
But I no longer specifically listen for higher highs, l bass extension, lower detail, etc. I pay attention to how much the music moves me, and if the swap improves resolution, I'll notice it along the way (e.g., I never noticed the backup chorus before). And if the music irritates me more than before, I'll notice that too.