Hi there and a Happy New Year for everybody!
First of all, I`m sorry for my bad English for the reason it`s not my native language

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So ... in the near future, I`ll purchase a Denon AVR-X4500H in order to have a 7.1.4 Dolby Atmos setup.
Here at this site, I`ve read an article about how to do the above setup on the X3600H model and the author said it`s best to reroute the front L/R channels via and external amplifier.
Now I have two questions:
1. Could I do the same front channels reroute on the X4500?
2. Could I use my old Denon AVR-X2000 model from 2014 as an external amplifier or I must purchase one from another brand, just not ending with the same commands on both AVR`s when I operate the remote control? ... In case I need another external amplifier could you please recommend some models bearing in mind I have a 215 square feet room?
I wish you could understand what I was trying to say and hope you are keeping the good work you are doing!
Best regards,
A.