I set up Volumio 2 RC on my new Odroid C2 and so far it streams fine to a Chord Mojo. The Mojo is capable of PCM up to 768khz.
When I play a 352.8kHz samplerate file, the now playing screen displays 2.82MHz instead of 352.8kHz. At other samplerates, the display seems correct. I have attached a screenshot.
Thanks a lot for taking a look at this.
I also noticed that some (not all) 16bit/44.1kHz FLAC files are reported on the Playback Screen as mp3 (albeit with the correct bitdepth / bitrate.