localhost willie # amixer
Simple mixer control 'IEC958',0
  Capabilities: enum
  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
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',1
  Capabilities: enum
  Items: 'PCM Out' 'H/W In 0' 'H/W In 1' 'IEC958 In L' 'IEC958 In R'
  Item0: 'PCM Out'
Simple mixer control 'Multi Track Internal Clock',0
  Capabilities: enum
  Items: '8000' '9600' '11025' '12000' '16000' '22050' '24000' '32000' '44100' '48000' '64000' '88200' '96000' '176400' '192000' 'IEC958 Input'
  Item0: '48000'
Simple mixer control 'Multi Track Peak',0
  Capabilities: volume
  Playback channels: Front Left - Front Right - Rear Left - Rear Right - Front Center - Woofer - Side Left - Side Right - Rear Center - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ?
  Capture channels: Front Left - Front Right - Rear Left - Rear Right - Front Center - Woofer - Side Left - Side Right - Rear Center - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ?
  Limits: 0 - 255
  Front Left: 43 [17%]
  Front Right: 43 [17%]
  Rear Left: 0 [0%]
  Rear Right: 0 [0%]
  Front Center: 0 [0%]
  Woofer: 0 [0%]
  Side Left: 0 [0%]
  Side Right: 0 [0%]
  Rear Center: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
  ?: 0 [0%]
Simple mixer control 'Multi Track Rate Locking',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Multi Track Rate Reset',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
localhost willie #  amixer |grep db
localhost willie #