Next step up on the streaming food chain?

If you haven’t already, find a good electrician to run separate dedicated power lines from your panel with true earth ground and pure copper HD outlets. If you really want to go all the way, have a separate audio panel installed first. Then the dedicated lines. Made a big difference in my system and I don’t have near the level of gear you have. 

A whole house surge protector is inexpensive compared to audio gear. It’s a bacon saver. 

+2 on Grimm MU1 or MU2. Not a fairy tale. 

Grimm 2, no I2s @18k but does seem to be a nice "integrated" option if you don't want to mess with separates. Not for me. I like to tinker. I'm retired, I need a job :)

I recently got a Bricasti M 1 Series II DAC to pair w/ my Innuos Zenith Mk II & OPPO CD player ( used as a transport).  It is the first time in my system ( only one I know well enough to say this) that streaming music on Qobuz or playing a CD ( recording dependent) can sound on par albeit a little different w/ my Basis 2500/ Basis Vector 4 / Hana ML/ Art Audio Phono amp which I’ve had for over 20 years ( cartridge is relatively new). Vinyl sounds a little bit richer & fuller w/ a little more depth but not by much but the digital sounds quieter, has a blacker background, bigger sound stage height & width wise. Both sound very good. 
 

I don’t know for sure but have heard the Series II is substantially better than the original Bricasti M 1 & can be upgraded by them for reasonable $. Perhaps that might be worth trying as you already like the Bricasti sound & know about their quality & excellent reliability. 

@zavato 

Since you own a Bricasti DAC, have you considered their M5 Network Player? Outside ROON,  take a look at Aurender N200 or N20 (only if you prefer using AES over USB).