There's also a version with a built-in class D amplifier and color display. On the software side it's neatly packaged with a web UI for configuration, as well as support for snapcast (multiroom), airplay and pulseaudio besides spotify.
I'm not affiliated with them, just very tempted to build one.
Overview: https://cast.otter.jetzt/ Sources: https://github.com/Ottercast
There's also a version with a built-in class D amplifier and color display. On the software side it's neatly packaged with a web UI for configuration, as well as support for snapcast (multiroom), airplay and pulseaudio besides spotify.
I'm not affiliated with them, just very tempted to build one.