I could blablater a page but tests exist everywhere, just remember that this helmet is perfect, especially for portable headphones, it changes your music!
Nevertheless, a small gripe at the bow, a little too small for my big head, and feel that it is somewhat fragile, especially at the joints. But no way to remove a star for that! The cushions are very comfortable despite it being closed.
The cable for iPhone (scandal !!), an adapter out of the middle ages is provided; I bitched at focal, they were quick to give me a standard: D