Fast installation on PS4, USB and optical Here it is finished, a report monstrous sound in 7.1 Battlefield 4 ditto on Killzone, both solo as multi, impeccable build quality, your voice when discussing the chat- party will no audible concern by all. Many options for sound rendering, more bass etc etc etc ... MAJ of 04/22/2014 After several months of intensive uses no battery worries, no wear on the helmets in itself