nate@natious:~$ amixer
Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 30
  Mono:
  Front Left: Playback 30 [100%] [on]
  Front Right: Playback 30 [100%] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB] [on]
  Front Right: Playback 255 [100%] [0.00dB] [on]
Simple mixer control 'Line-In',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Mono
  Mono: Capture [on]
Simple mixer control 'Mic Bypass',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 30
  Front Left: Capture 0 [0%] [-34.50dB] [off]
  Front Right: Capture 0 [0%] [-34.50dB] [off]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 14
  Front Left: Capture 0 [0%] [0.00dB] [off]
  Front Right: Capture 0 [0%] [0.00dB] [off]
Simple mixer control 'ExtMic',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Mono
  Mono: Capture [off]