Grass Valley Kaleido-Solo Installation v.5.00 - Manual (Page 103)

GUIDE TO INSTALLATION AND OPERATION
Kaleido-Solo | 99
13.2 Audio (experimental)
Please be aware that enabling this feature can damage any equipment that should not receive NPCM
audio such as speakers connected to the analog output.
In some cases the audio channel status does not
represent the real content. If you want to force this
status to represent PCM audio instead of NPCM you
can check this checkbox.