First off, please don’t confuse this with “Dolby Atmos” itself. “Dolby Atmos for Headphones” is a surround virtualization software created by Dolby for regular stereo headphones. It integrates via Windows 10’s Spatial Audio API and generally works with any generic DAC + Headphone output as found on standard PC hardware.
However in some cases with higher end DACs it doesn’t appear to be possible to enable it. It might be due to some DACs not being able to lower their bitrate to 16bit which is required by the software, but I don’t have a clear confirmation on this point.
With that said can someone confirm if the Tone Board is compatible with the software? It should be easy for anyone owning the DAC to test by installing the official Dolby Access app (https://www.microsoft.com/en-us/p/dolby-access/9n0866fs04w8?activetab=pivot:reviewstab) and enabling the 30-day trial for “Dolby Atmos for Headphones”.
If it works you should be able to select it from the Spatial Audio menu in Windows 10 and see that the setting sticks. If the DAC doesn’t support it you will be able to select it but it will immediately revert to “off” state again.
I can highly recommend trying this in any case since the surround virtualization algorithm really is quite fantastic.