In addition to Stream Unlimited, another swiss outfit
My Signature Rendu (spdif) streaming module identified itself as a MR-MOD formerly produced by ABC-PCB now Engineered Electronics and still supported with newer firmware. I can say the Sonore unit is an exceptionally good sounding unit using this module. I've been through various streamers up to a DCS Network bridge and the Sonore is right up there with it but the DCS and Blue sound Node 2 is just so much more convenient as one box w/native android app solutions, no server needed to stream Tidal/Qobuz and radio. With the Sonore I did have to add an SOTM Neo 200 to use Bubbleupnp server & app and was worried about leaving the SOTM on 24/7 (w/SD card hosted software). I may actually put them back into service at some point for variety. I have not compared any Raspberry PI or similar mini computer board based solutions or Lumin/Aurender/Auralic who probably develop their own.