amixerOutput

Simple mixer control 'PCM',0
  Capabilities: cvolume cswitch cswitch-joined
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 128
  Front Left: Capture 0 [0%] [0.18dB] [off]
  Front Right: Capture 0 [0%] [0.18dB] [off]
Simple mixer control 'PCM Capture Source',0
  Capabilities: enum
  Items: 'Mic' 'Input 1'
  Item0: 'Input 1'
Simple mixer control 'Mic',0
  Capabilities: pvolume pvolume-joined cvolume pswitch pswitch-joined cswitch cswitch-joined
  Playback channels: Mono
  Capture channels: Mono
  Limits: Playback 0 - 255 Capture 0 - 128
  Mono: Playback 0 [0%] [0.00dB] [on] Capture 0 [0%] [0.18dB] [off]
Simple mixer control 'Auto Gain Control',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [45.90dB] [on]
  Front Right: Playback 255 [100%] [45.90dB] [on]
Simple mixer control 'Speaker',1
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [-1.97dB] [on]
  Front Right: Playback 255 [100%] [-1.97dB] [on]