Summary: After burning it in for 24 hours, I tried them and compared them to my Razor m100s. First thing I noticed was that the bass was much lower and it didnt capture the deep feel of many songs. The plugs are uncomfortable at first and takes some time getting use to. One good thing is that the sound is very precise and clear and the earphones block out the environment very well.
More nuisances began to show with some extended use.
Summary: I bought these headphones as a replacement for my Sony MDR-EX71's. Instead, I ended up with more of a utility headphone as they only my choice when mowing the lawn or listening while flying. The sounds from the headphones is flat. Rock, Classical, Jazz, and Electronic all sound dead without using a headphone amp. There is virtually no bass whatsoever.