A perfect combination of critically acclaimed Sennheiser sound and Dolby 7.1 surround, the GSP 550 PC headset creates an immersive surround sound gaming experience. Intuitive PC software provides audio control including selectable equalizer modes for gaming, esports and music. Enjoy exceptional audio performance surround sound realism to your gaming experience with the Sennheiser GSP 550! Dolby 7.1 Surround Sound The GSP 550 features Dolby 7.1 Surround Sound processing via a USB connected dongle to deliver a 3D-like, enveloping audio experience. Sound Customization Dolby 7.1 surround sound is activated with a single button click on the inline dongle. Intuitive PC software provides four sound equalizer modes to optimize game type to your listening preference. Crystal-clear Communication The GSP 550's pro-level microphone features Sennheiser's latest noise cancellation technology for crystal clear in game chat. Lifting the mic boom arm conveniently mutes the mic. Perfect Fit An innovative headband and a new dual axis metal hinge design allow the GSP 550 adjust perfectly to different head sizes and face shapes. Exceptional Wearing Comfort Open-back, ventilated ear cups fitted with cushions covered in a soft, breathable fabric keep your ears cool and ensure superior wearing comfort. Desktop and Laptop Compatibility A USB connected, in line dongle provides Dolby 7.1 Surround Sound processing compatible with PC systems. The software operates with all Windows versions from Windows 7 and onwards. The GSP 550 can be used with Mac and console systems using the optional GSP 505 PC cable or GSA 506 console cable. (Note - Stereo Mode only, no 7.1 surround when used with Mac and console systems)