null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=P230Q200
    P230-Q200, 
    Default Audio Device
sysdefault:CARD=P230Q200
    P230-Q200, 
    Default Audio Device
iec958:CARD=P230Q200,DEV=0
    P230-Q200, 
    IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=P230Q200,DEV=0
    P230-Q200, 
    HDMI Audio Output
default:CARD=USB
    AudioBox USB, USB Audio
    Default Audio Device
sysdefault:CARD=USB
    AudioBox USB, USB Audio
    Default Audio Device
front:CARD=USB,DEV=0
    AudioBox USB, USB Audio
    Front output / input
surround21:CARD=USB,DEV=0
    AudioBox USB, USB Audio
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=USB,DEV=0
    AudioBox USB, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=USB,DEV=0
    AudioBox USB, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=USB,DEV=0
    AudioBox USB, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=USB,DEV=0
    AudioBox USB, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=USB,DEV=0
    AudioBox USB, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=USB,DEV=0
    AudioBox USB, USB Audio
    IEC958 (S/PDIF) Digital Audio Output
default:CARD=Impacto
    Impacto, USB Audio
    Default Audio Device
sysdefault:CARD=Impacto
    Impacto, USB Audio
    Default Audio Device
front:CARD=Impacto,DEV=0
    Impacto, USB Audio
    Front output / input
surround21:CARD=Impacto,DEV=0
    Impacto, USB Audio
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=Impacto,DEV=0
    Impacto, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Impacto,DEV=0
    Impacto, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Impacto,DEV=0
    Impacto, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Impacto,DEV=0
    Impacto, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Impacto,DEV=0
    Impacto, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Impacto,DEV=0
    Impacto, USB Audio
    IEC958 (S/PDIF) Digital Audio Output