Plantronics GAMECOM 777,PC HEADSET,SS,US, 5.1 Dolby Surround Sound Gaming Headphone technology gives you an unparalleled audio advantage--if needed, an analogue connection is also provided. Unveil the hidden, noisecancelling mic boom to strategize clearly with team members. 100% plug and play Dolby Usb Sound Card and lets you Adjust audio levels using in-line volume and mic-mute controls