Cheapaudioman recommended the WiiM Mini Airplay 2.
I have this little streamer connected to my Denafrips Pontus 2 DAC via Toslink cable and the sound quality is amazing.
Compared to my previous set-up with my PC to the Denafrips Iris to the Pontus via I2S I'd say it's about the same, possibly even better.
But I have ordered a PI 2 Design Mercury which I believe should be even better.