Simple mixer control 'PCM',0
  Capabilities: pvolume pswitch pswitch-joined penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 76
  Mono:
  Front Left: Playback 56 [74%] [-20.00dB] [on]
  Front Right: Playback 56 [74%] [-20.00dB] [on]