The headphones are sensitive enough that listening at volumes above 2/3 on my Sony NWZ-E444 begins to cause head pain (=), yet the sound quality remains unimpaired even at such levels. I agree with the many reviewers who gush about the headphones' deep bass; in fact, I wish there were more headphones like these. Despite this, it's highly unlikely with this design. Excellent headphones that suffer from a few nitpicks here and there but make up for it with superb audio quality.
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