ASUS XONAR DG Headphone Amp & PCI 5.1 Audio Card Audio Performance: Output Signal-to-Noise Ratio (A-Weighted): 105 dB; Input Signal-to-Noise Ratio (A-Weighted): Frequency Response (-3dB, 24-bit/96kHz input): &lt;10Hz to 48KHz; Output/Input Full-Scale Voltage: 1 Vrms (3 Vp-p); Audio Processor: C-Media CMI8786 High-Definition Sound Processor (Max. 96KHz/24bit); 24-bit D-A Converter of Digital Sources: 1x Cirrus-Logic 24-bit A-D Converter for Analog Inputs: 1x Cirrus Logic CS4245 (104dB DNR, Max. 192KHz/24bit); Analog Recording Sample Rate and Resolution: 44.1K/48K/96KHz @ 16/24bit; S/PDIF Digital S/PDIF Output: High-bandwidth Optical Connector supports 96KHz/24bit, additional SPDIF-out header for HDMI audio output; I/O Ports: Analog Output Jack: 3x 3.50mm mini jack(Front/Side/Center-Subwoofer); Operation System: Windows 7/Vista/XP/MCE2005; Accessories: 1x Low-profile Bracket; 1x Driver CD; 1x Quick Start Guide 103 dB; Output THD+N at 1kHz: 0.0025% (-92dB); Input THD+N at 1kHz: 0.0022% (-93dB) Analog Input Jack: 1x 3.50mm mini jack(Line-In/Mic-In); Other line-level analog input (for CD-IN/TV Tuner): Aux-In (4-pin header on the card) Front-Panel Header: Supports headphone jack-detection, automatically switch audio output from back-panel to front Digital Output: 44.1K/48K/96KHz @ 16/24bit, Dolby Digital, DTS, WMA-Pro; ASIO 2.0 Driver Support: 44.1K/48K/96KHz @ 16/24bit High Fidelity Headphone Amplifier: Optimized for 32~150; Analog Playback Sample Rate Resolution: 44.1K/48K/96KHz @ 16/24bit for all channels CS4245 (104dB DNR, Max. 192KHz/24bit), 1x Cirrus-Logic CS4361(103dB DNR, Max. 192KHz/24bit) Bus Compatibility: PCI v2.2 or above bus compatible