OtterCast is an open-source audio streaming device running Linux. Based on a Sochip S3 SoC, featuring a Webinterface, shairport-sync, snapcast, Spotify Connect and pulseaudio sink/source.
Why do you think that https://github.com/KCORES/KCORES-FlexibleLOM-Adapter is a good alternative to OtterCastAudioV2