ASUS Xonar U7, 7.1 channels, 24 bit, 114 dB, USB
ASUS Xonar U7. Audio output channels: 7.1 channels, Audio quality: 24 bit, Line-out Signal-to-Noise Ratio (SNR): 114 dB. Host interface: USB. Dolby technologies: Dolby Home Theater v4, Chipset: C-Media 6632A, Cables included: USB. Windows operating systems supported: Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium.... Volume control: Digital