null Discard all samples (playback) or generate zero samples (capture) default:CARD=Intel HDA Intel, AD1986A Analog Default Audio Device sysdefault:CARD=Intel HDA Intel, AD1986A Analog Default Audio Device front:CARD=Intel,DEV=0 HDA Intel, AD1986A Analog Front speakers surround21:CARD=Intel,DEV=0 HDA Intel, AD1986A Analog 2.1 Surround output to Front and Subwoofer speakers surround40:CARD=Intel,DEV=0 HDA Intel, AD1986A Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, AD1986A Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, AD1986A Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, AD1986A Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, AD1986A Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers default:CARD=DG Xonar DG, Multichannel Default Audio Device sysdefault:CARD=DG Xonar DG, Multichannel Default Audio Device front:CARD=DG,DEV=0 Xonar DG, Multichannel Front speakers surround21:CARD=DG,DEV=0 Xonar DG, Multichannel 2.1 Surround output to Front and Subwoofer speakers surround40:CARD=DG,DEV=0 Xonar DG, Multichannel 4.0 Surround output to Front and Rear speakers surround41:CARD=DG,DEV=0 Xonar DG, Multichannel 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=DG,DEV=0 Xonar DG, Multichannel 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=DG,DEV=0 Xonar DG, Multichannel 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=DG,DEV=0 Xonar DG, Multichannel 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=DG,DEV=0 Xonar DG, Multichannel IEC958 (S/PDIF) Digital Audio Output