Up top, you'll find indicators for Dolby Headphone, Dolby Digital EX, Dolby Pro Logic IIx and Dolby Digital -- these let you know which surround sound simulation, if any, is currently being pushed to the headset.
The YSP-3050 offers full support for surround sound standards, including Dolby Digital, DTS, Dolby Pro Logic II and DTS Neo:6, as well as CINEMA DSP technology, to create realistic soundscapes in any room.