I’m using a Hiby New R6 which is capable of PCM384 and DSD256.
Except with Roon.
I can use Roon Remote and ARC but I’m limited to 16/44.
As Roon is using Android Audio I would have thought I’d at least be able to upsample to 24/48 but upsampling has no effect.
Unless I enable crossfeed then I get 24/44 (I think) 
I gave up on the DAP for Roon and got an Ifi iDSD Gryphon for my iPhone and it sounds remarkable albeit a bit bulky and far less storage capacity.