$ amixer -c1
Simple mixer control 'FM',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'Mic/Line',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume
  Capture channels: Mono
  Limits: Capture 0 - 15
  Mono: Capture 0 [0%]
Simple mixer control 'Capture Boost',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'TV Tuner',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Mono
  Mono: Capture [on]