Works best with Volumio, in my opinion. With Volumio and the audiophonics-volumio-plugin, it is possible for me to skip tracks, control volume and shutting down proper with the remote control. Sound is very good - better than Topping DX3pro+, imo.
I paired it with pi3B+, 1GB RAM. Works fine! I build a case out of thin wood plates. Now, got a very good all-in-one STREAMER/DAC for 260 Euro!!! Nice!
But please Audiophonics-Team, make a big HINT in Github, that the old procedure of changing the kernel of raspy in order to get the I-Sabre-driver working, is NOT necessary anymore, because it is implemented in the newer os versions. That costs me hours of work, when i prepared a OS for plexamp!!!