Creative Sound Blaster ZxR PCIe Audiophile Grade Gaming Sound Card with High Performance Headphone Amp and Desktop Audio Control Module CrystalVoice Voice Enhancement and Clarity Technology, express yourself and be heard crystal clear in video conferencing, multiplayer games and online chats CrystalVoice FX, forge your own unique team identity in crystal clear audio; match your voice to your game avatar High Quality Headphone Amp, supports studio quality headphones with up to 600 ohm impedance Dolby Digital Live and DTS Connect, connect to your decoder or home theater system through a single digital cable for intense 5.1 surround sound from any source Headphone/Speaker Switching means you never have to unplug your headphones again, just toggle between your headphone and speakers system with a flip of a switch High-Quality Audio Cables, enjoy high quality audio listening and recording with easy connection to your entertainment system, amplifier or active speaker via our premium analog and optical cables Scout Mode, hear them before they hear you, proprietary technology allows you to hear your enemies from further away, giving you a distinct tactical advantage in combat A signal to noise ratio or SNR of 124dB means your audio will be &#62; 99.99% pure audio which is 34.4 times better than the average sound cards Please refer the User Guide before use.