Spent some time with a friend's TMA-1 and directly compared them to my own HD25-1 II. Amped them with an Arrow 12HE. A/B'ed forth and back listening to a wide variety of genres, from dubstep to jazz to heavy metal.
The HD25-1 II trumps the TMA-1 on every level but bass-extension. The TMA-1 hits lower and deeper but when going from the TMA-1 to the HD25-1 II it feels like lifting a blanket from your head. They sound muffled and veiled without any treble sparkle compared to the Sennheiser. They have a bass heavy signature with some decent mid-region. In my opinion, their treble feels terribly recessed and this makes them seem very undetailed. I can't believe some people here are calling this thing a direct competitor to the HD25-1 II. Even to my friend, who likes his headphones extremely bassy, it was instantly clear that the HD25 was superior and offered much better fidelity.
They look great though and are a little more comfortable to wear than the HD25-1 II. They seal well but isolate less than the HD25-1 II. I love the matte-black finish and coiled cable around the drivers. I wouldn't recommend them to anyone using them for other genres than bass heavy electronica like dubstep/breakcore/idm etc. I also think they're very overpriced compared to headphones like the ATH-M50.