Hello, I am not a true audiophile yet, maybe at half of the half way. I cannot hear the difference between ksc75 and a random earbud. What I can hear is instruments, or the lack of them. I never noticed the low guitar in middle solo of "Dance of Death", neither I felt the frog like bass of the sabbath's "Paranoid". The bells of Turtles' "Last Laugh" was really more alive.
So these bunch of some become my test kit, these are the sounds that I listen to grade sound quality before buying. Most you don't need them, but does any of you know any good tracks for testing, something make difference more audible.