This is a review of a pair of free IEM's I recieved from DUNU as part of a give away contest they recently held here on Head-fi.   When I recieved my package the first thing I notices was...

Best closed headphones I had heard - very flat response, almost no midrange distortion, very easy to drive (good for portable), good soundstage (definately better than K240), good isolation, but...

Overall excellent buds, very good sound quality, especially for their price, the medium set of tips fits exactly in my ears and provides a near perfect seal. Bass is very detailed, but not...

I'll keep this very short.  They are very smooth sounding.  Treble toned down so not so good for rock but have a magic about them that makes them better than mark 2.  I use them with a '89/'90...

Bought these on whim, for your basic train ride to work I don't mind. But its far from being the best I have own.