I've listened to the sennheiser hd600 and hd650 and the k701 so I know what warm sound is like. Those three are very laid back and warm sounding with the k701 being brighter and thicker in the midrange and treble. So if the dx90 is more neutral then that is the DAP I'll go with. I personally don't like warm sound signatures if the x5 is like that.
7/1/14 at 10:13pm