I got the Dolby passthrough to work on 5 skyworth android tv boxes all working with 5.1 home theater system with kodi plex and cyberflixDon't buy this box for a home theater application. It's fine for you average Joe who just wants DSTV and Youtube but I couldn't get passthrough to work correctly with Plex or Kodi to my Marantz receiver (not via HDMI or optical). It also doesn't support 24p switching and will struggle with high bitrate files due to its 100Mbit ethernet port.
There is only one Android box to get if you want a good experience with everything and that's the Nvidia Shield (except their remote, their remote is crap).