Roon ROCK and DACs


Looking at purchasing a Denafrips or HoloAudio DAC.  I use ROON on a ROCK and connect to the DAC directly using a USB cable (no streamer).  The Denafrips or HoloAudio DACs are not listed as ROON compatible. Will either of these DACs work when connected directly or must I use some sort of a ROON Bridge?  I hoping I don’t need to use an intermediary component.  Can anyone who has tried this offer some first hand experiences?  

mjjw