audio_output {
       type            "alsa"
       name            "XR18"
       device          "plughw:CARD=X18XR18,DEV=0"
       format          "48000:32:2"
       auto_resample   "no"
       auto_channels   "no"
       always_on       "yes"
       mixer_type      "software"
#       mixer_device    "default"       # optional
#       mixer_control   "PCM"           # optional
#       mixer_index     "0"             # optional
}

audiohub@DYM-Portable-AudioHub:~$ aplay --device=plughw:CARD=X18XR18,DEV=0 "/home/audiohub/Music/Waterlines/05 - Take Your Time.wav"
Playing WAVE '/home/audiohub/Music/Waterlines/05 - Take Your Time.wav' : Float 32 bit Little Endian, Rate 44100 Hz, Stereo

audiohub@DYM-Portable-AudioHub:~$