USB Mixer: usb_id=0x1b3f2007, ctrlif=0, ctlerr=0
Card: GeneralPlus USB Audio Device at usb-0000:00:1d.0-1.6, full speed
  Unit: 5
    Control: name="Auto Gain Control", index=0
    Info: id=5, control=7, cmask=0x0, channels=1, type="BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
  Unit: 5
    Control: name="Mic Capture Volume", index=0
    Info: id=5, control=2, cmask=0x0, channels=1, type="S16"
    Volume: min=-3072, max=8448, dBmin=-1200, dBmax=3300
  Unit: 5
    Control: name="Mic Capture Switch", index=0
    Info: id=5, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
  Unit: 6
    Control: name="Speaker Playback Volume", index=0
    Info: id=6, control=2, cmask=0x3, channels=2, type="S16"
    Volume: min=-11520, max=0, dBmin=-4500, dBmax=0
  Unit: 6
    Control: name="Speaker Playback Switch", index=0
    Info: id=6, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
  Unit: 7
    Control: name="Mic Playback Volume", index=0
    Info: id=7, control=2, cmask=0x0, channels=1, type="S16"
    Volume: min=-3072, max=2304, dBmin=-1200, dBmax=900
  Unit: 7
    Control: name="Mic Playback Switch", index=0
    Info: id=7, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0