Enjoy, the pairing is not for me. For the price, I would expect it to be more than it was.
The TH900 just loses me on the bass presentation, compared to the Mad Dog, despite being the more detailed headphone. On the Mad Dog, the bass is more natural, more pushed back, less bloated. TH900 feels like it has a really well controlled bass hump that was coloring the sound too much for me.