ASUS Xonar D2X

Asus Xonar D2X is the world's first PCI-E interface high end audio card featuring SNR up to 118dB. Xonar D2 provides intuitive DS3D GX to solve Vista gaming audio issues, and Acoustic Echo Cancellation (AEC) for best voice communication quality, the Xonar D2X will undoubtedly provide the best gaming experience ever.

PCI-e interface, ASUS AV200 HD sound processor, TI Burr-Brown PCM1796*4 DAC (120dB SNR, Max. 192Khz/24bit), VISTA Gaming with DirectSound & EAX support, Hi-Fi class audio quality with SNR up to 118dB, Dolby HomeTheater Technologies & DTS Connect, Valuable Cakewalk and Ableton Live music production software bundled.

Guru3D:
"No doubt about it though, if you are looking for the ultimate enthusiast sound card, then this is it" Full review

Elite Bastards:
"Overall though, the Xonar D2X is almost a complete package, with simply fantastic audio quality, a full set of Dolby Digital Live and DTS functionality, a great bundle and some reasonable gaming performance and features. " Full review

Bit-tech.net:
"Is the Asus Xonar D2X worth the money? Absolutely" Full review