The HyperX Cloud Revolver S Gaming Headset features an audio control box that is a USB sound card with features like a backlit push-button switch to activate Dolby 7.1® channels of virtual surround sound with its onboard DSP – no software is required. The Dolby Surround 7.1 functionality is compatible with PC and PS4™. Switch between 3 equalizer presets: Bass Boost, Flat and Vocals. The control box also features headphone volume control dial, and microphone volume control dial and a microphone mute switch. It can clip on to belts or pockets for quick and convenient access.