[wesk05]

Have you tried Minix U1?. Still not sure whether it can do Dolby Atmos passthrough.
If Minix U1 can do Atmos/ HD Audio passthrough for sure, then I will skip Himedia and will go for Minix U1.

Have I tried Minix U1? Yes, I have had it from the week it was released. Does it do Dolby TrueHD, Atmos passthrough? Yes, it does, but Minix will not officially claim support for Atmos. I was only making a suggestion based on what you mentioned your requirements were. Both Minix U1 and HiMedia Q10/5 will suit your needs. HiMedia has a couple of features like HDR10, full HD3D playback, VP9 codec, hi-res audio output that the Minix U1 will never have.