Hello,
Here is my latest toy, an RPi with HifiBerry AMP2, in a box, with connectors and added volume/mute button and IR remote with volume/mute as well as Roon play/pause/next/previous. The IR receiver is at the end of a long cable and in a strategic position while the box is semi-hidden under the bed.
Full build documentation here, including the use of the Roon API for the remote control:
http://www.youplala.net/2018/03/17/packaging-our-bedroom-raspberry-pi-for-hi-fi/
Nico