Sound quality side now:
From my perspective, it is above all helmets that have ever try in recent years. At the risk of being redundant with all these tests you have had the good idea to check before you embark on such a purchase, I would stress the extreme precision of the helmet. Indeed, absolutely all sounds (and regardless of their position on the spectrum) come out with impressive clarity. The highs sound great without twisting your eardrums, powerful bass will "saturate" and does not hide anything other sounds.
I will not dwell on this point any longer, a lot of more experienced and skilled testers than a music lover like me have already provided us with a bunch of reviews that side. This will provide the Momentum is a serious size in the area of mobile high-end to individual.
Headphone Ergonomics:
On this point it is simply exeptionnel! I use it every day between 4 and 6 am, usually by sessions of 2 hours, and he is never uncomfortable to wear. The comfort of two foam covered in soft leather is to roll over the hoop and weighs nothing, you feel the pressure from both reasonable foams on your ears.
The helmet looks solid, difficult at present to judge the life of leather but I will make a few less feedback after use. The two ball joints for fixing the transducers on the arch-they appear as solid and well fixed on the arch, they do not dislocate during use. Not a hair game between them and transducers only move on a fairly narrow but solid angle.
A few useful details:
The remote control of one of the cables is only compatible with iDevices listed on the Sennheiser website, do not expect compatibility with other models. With Galaxy S3, the cable is usable but the remote control volume buttons are inactive, for it seems the central key to activate / deactivate the microphone which I did not test the function.
The semi-hard case of the helmet may contain the transducers with the reassembled near maximum on the arch, it will reset the height of your helmet bag to each outlet, but the ease of this setting is that it soon becomes automatic.
To my knowledge, this helmet is one of the few to offer a most excellent listening experience coupled with fine elegance and racy look great.
In short, the Momentum is a purchase that must therefore be thoughtful, but once in your hands is a marvel that will undoubtedly pour your quality of thirst, and on all levels.
I recommend :)
