The Mad Dog 3.2 Universal (the one with a real cable) and the HE-400 are the two wired headphones that I use.
The Mad Dog 3.2 Universal is significantly better in many ways than the Mad Dog 3.0 (and by implication, the earlier versions). So, anyone who has heard the Mad Dog before April is not making a valid comparison.
In my system, the Mad Dog 3.2 Universal is better than the HE-400 (my previous favorite over headphones costing twice as much) in every way except "air" and soundstage (the Mad Dog has very little of either). The fact that these two qualities are the area where the Alpha Dog is supposed to bring the most improvement, is why I pre-ordered them.
The Mad Dog is better than any other headphones I have heard in "lack of ringing". ("Ringing" or smearing, means additional sound added to the end of notes, such as is added if you have very reflective walls to the left or right of speakers - one of those qualities easier to hear than describe).
Edited by kstuart - 9/10/13 at 2:48pm