Im pretty sure these are knock offs. To sum it up, the general idea of this headphone is a combination of the clarity of the HD700/800 (not that different) with no roll-off highs and clean sound across the board. Al inicio dudé mucho por comprarlos, pero lo vi en una rebaja a $923 MNX (por importación) y me decidí a comprarlo. youre gaming or talking on Zoom. Unfortunately, the most distal strap ( strap closest to toes) is a little on the wide side. It does have nice vertical coverage for my torso and the waist straps are nice for the extra cinching of the waist. Save some money it will work if its a gift or for yourself. The straps couldn?t get tied down tight enough. If I?m watching a video on YouTube and knock them ever so slightly, it will either suddenly pause or turn the iPad off altogether. After installing the extender, I had a steady 4 bars, and no problems with my phone or iPad.