default
    Playback/recording through the PulseAudio sound server
sysdefault:CARD=PCH
    HDA Intel PCH, CONEXANT Analog
    Default Audio Device
front:CARD=PCH,DEV=0
    HDA Intel PCH, CONEXANT Analog
    Front speakers
surround40:CARD=PCH,DEV=0
    HDA Intel PCH, CONEXANT Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
    HDA Intel PCH, CONEXANT Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
    HDA Intel PCH, CONEXANT Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
    HDA Intel PCH, CONEXANT Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
    HDA Intel PCH, CONEXANT Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers