These headphones are just unbelievable! I had Panasonic's before, and it doesn't compare. Now, I can even hear the singers breathe!
The bass is insane for headphones, and it gets frequencies that my 10" subwoofer can't reproduce. The headphones actually start vibrating if you crank them high enough.
I could not find any point where they would distort (and I'm glad because I would be deaf by now)