device {
  type: ALSA_INPUT
  index: 2
  display_name: "Scarlett 18i20 USB (USB Audio)"
  alsa_name: "Scarlett 18i20 USB"
  alsa_info: "USB Audio"
  num_channels: 18
  address: "hw:1,0"
  extra_delay_ms: 0
}
bus {
  name: "Ambience mic"
  device_index: 0
  source_channel_left: 4
  source_channel_right: 5
}
bus {
  name: "Commentator 1"
  device_index: 0
  source_channel_left: 2
  source_channel_right: 2
}