Asus Xonar D1 PCI soundcard, 7.1 Channel DTS Digital Surround, 192kHz/24bit Playback Support, Xonar GX2.5 Audio Engine, 35 times clearer then on-board audio, Supports latest DS3D GX2.0 for gaming on Vista & XP, Dolby home theater technologies, Low-profile bracket bundled, S/PDIF connect to VGA cards for HDMI output.

Audio Processor, ASUS AV100 High-Definition Sound Processor (Max. 192KHz/24bit)
24-bit D-A Converter of Digital Sources: Cirrus-Logic CS4398*1 for Front-Out (120dB SNR, Max. 192kHz/24bit), Cirrus-Logic CS4362A*1 for other 6 channels (114dB SNR, Max. 192kHz/24bit)
24-bit A-D Converter for Analog Inputs: Cirrus-Logic CS5361* 1 (114dB SNR, Max. 192kHz/24bit

Analog Output Jack: 3.50mm mini jack *4 (Front/Side/Center-Subwoofer/Back)
Analog Input Jack: 3.50mm mini jack *1 (Shared by Line-In/Mic-In)
Other line-level analog input (for CD-IN/TV Tuner): Aux-In (4-pin header on the card)
Digital S/PDIF Output: High-bandwidth TOS-Link optical transmitter (shared with Line-In/Mic-In jack) supports 192KHz/24bit
S/PDIF Header: Connecting to supported VGA cards with HDMI output
Operation System: Windows Vista/XP(32/64bit)/MCE2005
Bundled Software: RightMark Audio Analyzer 6.0.6