The CXUHD will support playback from a Dolby Atmos or DTS:X source.
If you are experiencing problems with Dolby Atmos or DTS:X playback, please ensure that the CXUHD 'Audio Output Setup' options within the 'SETUP' menu have been adjusted to the following:
Secondary Audio - Off
HDMI Audio format - Bitstream
We do hope that this information helps, but should you require any further assistance please contact us via the Cambridge Audio support site HERE