One thing to check in settings is that bit perfect is “on” not “when possible”. That way it’ll alert you if it can’t play bit perfect.
When you are playing music you can see the data rate on the screen, and should indicate format in and format out.
In general I use default settings, turn on bit perfect, and enable use with Bluetooth (minimizes resampling for Bluetooth playback.). Other settings I don’t change much.
Another question: I tested it with Spotify on the smartphone but the volume is quite low even pumping it up to the max on the smartphone: is there something that I’m missing?
Actually it is almost useless with Spotify.
Working perfectly with Tidal Hi-fi plus and MQA files.