At the moment I'm just using it as a Roon endpoint to the D & D 8cs. I'll use it with the Grimms when D & D gets the Roon update (if they ever do!), or perhaps sooner. It's still kind of buggy and some of the functionality is yet to be implemented via software -- I don't think the FM tuner is working yet. But the sound quality is insane, in fact it's strange that it sounds so much better. It doesn't make sense to me. I was upgrading from a Raspberry Pi endpoint through a miniDSP. I'm running the Grimm through the miniDSP as well. But whatever changed has really unlocked the potential of the D & Ds (wife confirmed -- not just me). I will compare the Antipodes, maybe the improvement is not the Grimm but just no Raspberry Pi.
Anyway very cool looking, tons of functionality.