La Xonar DX es una placa de sonido de Asus creada puramente para los más exigentes ya que posee una calidad de sonido impecablemente limpia según comenta Asus. Esta placa de conexión Pci-Express de sonido 7.1 cuenta con tecnología Dolby Home Theater, EAX 5.0 y DS3D GX lo que le otorga estas características:

Audio Performance
Output Signal-to-Noise Ratio (A-Weighted): 116 dB for Front-out
112dB for other channels
Input Signal-to-Noise Ratio (A-Weighted): 112dB
Output Total Harmonic Distortion + Noise at 1kHz (-3dB) : 0.00056% (-105dB) for Front-out
Input Total Harmonic Distortion + Noise at 1kHz (-3dB) : 0.0004% (-108dB) for Line-in
Frequency Response (-3dB, 24-bit/96kHz format): <10Hz to 48KHz
Output/Input Full-Scale Voltage 2 Vrms (5.65 Vp-p)
Bus Compatibility
PCI Express -PCI Express Rev.1.0a specification compatible
-Max. full 2.5Gbps bandwidth per direction and optimized latency for high-definition audio processing
-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: 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)
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, DTS