ASUS PCI-Express x1 7.1 Channel Sound Card XONAR_DX/XD/A/90-YAA060-1UAN00Z Output Signal-to-Noise Ratio (A-Weighted): 116dB for front-out, 112dB for other channels dB; Input Signal-to-Noise Ratio (A-Weighted): 112 dB; Output THD+N at 1kHz: 0.00056% (-105dB) for Front-out Input THD+N at 1kHz: 0.0004% (-108dB) for Line-in; Frequency Response (-3dB, 24-bit/96kHz input): &lt;10Hz to 48KHz; Output/Input Full-Scale Voltage: 2 Vrms (5.65 Vp-p) Audio Processor: ASUS AV100 High-Definition Sound Processor (Max. 192KHz/24bit); 24-bit D-A Converter of Digital Sources: 1x Cirrus-Logic CS4398 for Front-Out(120dB SNR, Max.192kHz/24bit), 1x Cirrus-Logic; CS4362A for other 6 channels; 24-bit A-D Converter for Analog Inputs: 1x Cirrus-Logic CS5361 (114dB SNR, Max. 192kHz/24bit); CD-ROM drive (or DVD-ROM drive) for software installation; High-quality headphones, powered analog speakers, One PCI Express 1.0 (or higher) compatible slot for the audio card; One available 4-pin power cable from PC?s power supply unit; Microsoft Windows Vista(32/64bit)/XP(32/64bit)/MCE2005; Intel Pentium 4 1.4GHz or AMD Athlon 1400 CPU or faster CPU