petr@petr-htpc:~$ amixer
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 127
  Mono: Playback 101 [80%] [-13.00dB] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 127
  Mono:
  Front Left: Playback 127 [100%] [0.00dB]
  Front Right: Playback 127 [100%] [0.00dB]
Simple mixer control 'IEC958',0
  Capabilities: penum
  Items: 'PCM Out' 'H/W In 0' 'H/W In 1' 'IEC958 In L' 'IEC958 In R'
  Item0: 'PCM Out'
Simple mixer control 'IEC958 Output',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',1
  Capabilities: penum
  Items: 'PCM Out' 'H/W In 0' 'H/W In 1' 'IEC958 In L' 'IEC958 In R'
  Item0: 'PCM Out'
Simple mixer control 'Deemphasis',0
  Capabilities: enum
  Items: '44.1kHz' 'Off' '48kHz' '32kHz'
  Item0: 'Off'
Simple mixer control 'H/W',0
  Capabilities: penum
  Items: 'PCM Out' 'H/W In 0' 'H/W In 1' 'IEC958 In L' 'IEC958 In R'
  Item0: 'PCM Out'
Simple mixer control 'H/W',1
  Capabilities: penum
  Items: 'PCM Out' 'H/W In 0' 'H/W In 1' 'IEC958 In L' 'IEC958 In R'
  Item0: 'PCM Out'
Simple mixer control 'Monitor Analog In',0
  Capabilities: volume pswitch pswitch-joined penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 127
  Front Left: 0 [0%] [-99999.99dB] Playback [off]
  Front Right: 0 [0%] [-99999.99dB] Playback [off]
Simple mixer control 'Monitor Digital In',0
  Capabilities: volume pswitch pswitch-joined penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 127
  Front Left: 0 [0%] [-99999.99dB] Playback [off]
  Front Right: 0 [0%] [-99999.99dB] Playback [off]
Simple mixer control 'Monitor Digital Out',0
  Capabilities: volume pswitch pswitch-joined penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 127
  Front Left: 0 [0%] [-99999.99dB] Playback [off]
  Front Right: 0 [0%] [-99999.99dB] Playback [off]
Simple mixer control 'Multi Track Internal Clock',0
  Capabilities: enum
  Items: '16000' '22050' '24000' '32000' '44100' '48000' '64000' '88200' '96000' '176400' '192000' 'IEC958 In'
  Item0: '44100'
Simple mixer control 'Multi Track Rate Locking',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Multi Track Rate Reset',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
petr@petr-htpc:~$ amixer sset 'Monitor Digital Out',0 toggle
Simple mixer control 'Monitor Digital Out',0
  Capabilities: volume pswitch pswitch-joined penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 127
  Front Left: 0 [0%] [-99999.99dB] Playback [on]
  Front Right: 0 [0%] [-99999.99dB] Playback [on]
petr@petr-htpc:~$ 

