I’m no spring chicken either and I don’t have a million dollar setup, but with a pair of $100 Shure SE215, I can just barely make out which are lossy (usually).

I’m no spring chicken either and I don’t have a million dollar setup, but with a pair of $100 Shure SE215, I can just barely make out which are lossy (usually). But it’s not a big enough difference to concern me. I’m still plenty happy with a 320kps mp3.