ASUS Xonar DG 24-bit 5.1 PCI Low Profile Sound Card ASUS Xonar DG 24-bit 5.1 PCI Sound Card General Features: Low profile PCB C-Media CMI8786 High-Definition Sound Processor PCI interface Output Signal-to-Noise Ratio (A-Weighted) (Front-out): 105 dB Input Signal-to-Noise Ratio (A-Weighted): 103 dB Output THD+N at 1kHz (Front-out): 0.0025 %(-92 dB)