I also received my pair today Dogpads and comfort strap. Very brief impressions -
Nice detail, present, not overly prominent bass, lovely mids. My Pico Slim does surprisingly well with them. Very, very listenable for a portable rig in fact. I'll get some time with them from the Peachtree Nova later this weekend. Still, very impressed with the sound from the Pico Slim, and ever more impressed with that little amp.
The Mad Dogs are really attractive, in a retro kind of way - kind of like Grados. Funky neat looking.
Did I mention comfortable? Very much so. Someone a page or two back asked about these as gym phones - no. Very light clamping force, a tad heavy, and way too nice to thrash around the gym.
I'll get back with some real impressions after a bit, and if time permits, some comparisons with my 1964 ears quads (custom iem's) and my Beyer DT 770 - 600's (unless someone buys them - Please!).
So far, with just a bit of time, very nice headphones, and a job well done! I had considered sending them back after a quick listen, because I've overspent my fun fund a bit. After the brief listen, I'll find other stuff to sell! These are a lovely sounding, very comfortable, accurate, detailed, fast headphone. I'm keeping them!