Audio Performance	Output Signal-to-Noise Ratio (A-Weighted): 124dB for Front-out,110dB for Headphone-out dB Input Signal-to-Noise Ratio (A-Weighted): 118 dB Output THD+N at 1kHz: 0.0003% (-110dB) for Front-out, 0.001% (-100dB) for Headphone-out Input THD+N at 1kHz: 0.0002% (-113dB) for Line-in Frequency Response (-3dB, 24-bit/96kHz input): <10Hz to 90KHz Output/Input Full-Scale Voltage 2 Vrms (5.65 Vp-p)
Bus Compatibility	PCI Express: -PCI Express Rev. specification compatible -Compatible with X1, X4, X8, X16 PCI Express slots
Main Chipset	Audio Processor: ASUS AV100 High-Definition Sound Processor (Max. 192KHz/24bit) 24-bit D-A Converter of Digital Sources: Texas Instruments PCM1792A1 for Front-Out (127dB SNR, Max. 192kHz/24bit) 24-bit A-D Converter for Analog Inputs:* Cirrus-Logic CS5361* 1 (114dB SNR, Max. 192kHz/24bit) High Fidelity Headphone Amplifier: Texas Instruments 6120A2*1 (120dB SNR, 100dB THD+N @ Vcc±12V, RL=600Ω, f=1kHz)
Sample Rate and Resolution	Analog Playback Sample Rate and Resolution: 44.1K/48K/96K/192KHz @ 16/24bit Analog Recording Sample Rate and Resolution: 44.1K/48K/96K/192KHz @ 16/24bit S/PDIF Digital Output: 44.1K/48K/96K/192KHz @ 16/24bit, Dolby Digital ASIO 2.0 Driver Support: Supports 44.1K/48K/96K/192KHz @16/24bit with very low latency
I/O Ports	Analog Output Jack: RCA jack 2 (Front R / Front L), 6.30mm jack1 (Headphone out) Analog Input Jack: 6.30mm 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 Coaxial/TOS-Link combo port supports 192KHz/24bit Front-Panel Header: Shared by Headphone out / 2 channels out / Microphone in S/PDIF Header: Connects to compatiable graphic cards for HDMI output
Driver Features	Operation System: Windows Vista/XP(32/64bit)/MCE2005 Dolby® Technologies: Dolby® Digital Live Dolby Digital Live encodes any audio signal on PC in real-time to Dolby Digital (AC3) 5.1 surround sounds to your home theater environment through one single S/PDIF connection Dolby® Headphone Dolby Headphone technology allows users to listen to music, watch movies, or play games with the dramatic 5.1-channel surround or realistic 3D spacious effects through any set of stereo headphones. Dolby® Virtual Speaker Dolby Virtual Speaker technology simulates a highly realistic 5.1-speaker surround sound listening environment from as few as two speakers. Dolby® Pro-Logic II Dolby Pro-Logic II is the well-known technology to process any native stereo or 5.1-channel audio into up to 6.1 channel output, creating a seamless, natural surround soundfield. Smart Volume Normalizer™: Smart Volume Normalizer™ Normalizes the volume of all audio sources into a constant level and also enhances your 3D sound listening range and advantages in gaming Xear 3D™ Virtual Speaker Shifter: Virtual 7.1 speaker positioning Magic Voice™: Xonar Essence STX provides VocalFX, the latest vocal effect technologies for gaming and VoIP, including: -VoiceEX: produces vivid environmental reverberation for your voice in EAX games -ChatEX: emulates different background environment effects when you chat online -Magic Voice: changes your voice pitch to different types (Monster/Cartoon…) for disguising your real voice or just for fun in online chatting Karaoke Functions: Music Key-Shifting and Microphone Echo effects like professional Karaoke machine FlexBass™: Professional Bass Management/Enhancement system 3D Sound Engines/APIs: Vista: DirectSound3D® GX 2.5, DirectSound® HW, DirectSound SW, A3D®1.0, OpenAL generic modes, 128 3D sounds processing capability XP: DirectSound2.5 SW, A3D®1.0, OpenAL generic modes, 128 3D sounds processing capability
Accessories	1 x 3.5mm-to-RCA adaptor cable (8ch) 1 x S/PDIF optical adaptors