Yamaha home cinema to with Gold Phantoms

[Snoopy8]

So after a bit of more researches, the AVM 70 is compatible 8k upgradeable which is quite important for me, but the JBL SDP-55 is only limited to 4k UHD. 

No doubt AVM 70 will do a good job, so go for it.

Regarding my office, I bought the Leak 130 Stereo Amplifier. I just bought another 2 phantom gold and will try on those. I'll be able to plug in my turntable to the Amp and my computer too (from my office) and I've discussed with Devialet and told me that I can have 1 optical input and use it as a source for all speakers. I don't know if this is a new feature but I'll definitely try and let you know the outcome. 
Box will arrive in 2 weeks... can't wait

The Phanthoms have always been able to take 1 optical input and drive stereo speakers. What is new is driving multiple rooms.

Note that this is different when you set it to low latency optical input, the Phanthom becomes a dumb active speaker. Hence, when using Dante, you will need optical inputs for every Phantom.