Simple mixer control 'PCM',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 128
  Mono:
  Front Left: Playback 0 [0%] [-128.00dB] [off]
  Front Right: Playback 0 [0%] [-128.00dB] [off]