Some of my favorite features:
HDMI v1.4 allowing for compatibility with 4K,1080p 3D content and displays▲
High Definition Multimedia Interface (HDMI) v1.4
The HDMI v1.4 connections on the DENON AVR-4520 allows for the transmission of 1080p 3D content between a 3D-compatible Blu-Ray Disc player and a 3D HD display. It also brings in an audio return channel allowing for two-way transmission of audio. This allows your television, for example, to send audio back...