Take a planar design and pump up the nether bass through and through via EQ. The distortion on the common dynamic driver in the bass region is such that any full sized headphone will sound awful muddy. Dynamics will always have that sort of hump going on for them. On the topic, the d1100 I don't recall being that able with the subbass. Plenty of distortion, though at least it reached down low. The k550 had a murderous spike around 6khz.
12/13/12 at 11:33am