BluOS has Kindle OS software and is the only streamer I know that does. You could use the "connect" API with Spotify tidal Qobuz from the native app with compatible streamers, but I believe the Node is your clear choice here..
Streaming recommendations
I am looking to add a streamer to my home system. I want to connect it to my Emotiva ERC-4 via the TOSlink. I would control the device via my Fire tablet or iPad 3 (both are pretty good with my Visio Smart TVs.) or my android phone. What is a good unit that is budget friendly?