Steve, Ethernet directly into the DAC? Not sure how that works. I run Ethernet from my Roon server to a Roon endpoint/renderer but then I2S directly into the DAC.
I designed an Ethernet Renderer on a module that can be installed in my Overdrive DAC or in a stand-alone Renderer called the Interchange.
https://www.audiocircle.com/index.php?topic=156409.0
This can be used just like a Sonos, but with much better SQ. You can stream Tidal or play tracks from any number of apps, including Linn Kinsky, Linn Kazoo, Twonky, Jriver and others.
Steve N.
Empirical Audio