You might want to check out this thread from yesterday:
No, Andrew, that is incorrect. Two Oppo UDP players added RAAT support almost two years ago. But that RAAT support does not include multichannel nor DSD. It was an Oppo decision/limitation that has not changed for almost two years and is not going to change. Had Bill done a bit more reading in this forum first he could have made that determination without posting the same question/request across multiple threads.
I don’t know if your Oppo is affected, but @WiWavelength seems to know about this.