Hi there!
Somehow I can’t use any device with Airplay 2 when streaming from Vox. The music is out of pitch with lots of clicks and static noises.
The problem does not occur with Airplay 1 though (tried it with an AirPort Express gen 1 using spdif)
The airplay devices tested were: Apple TV 4K gen2, Samsung q800, wiim mini spdif out.