Building on the success of its IN-Command X Series AV Receiver range, both new models combine compatibility with the latest home cinema sound and vision formats, including Dolby Atmos and DTS:X, 4K Ultra HD with HDR (High Dynamic Range) Dolby Vision, and HLG (hybrid Log Gamma) along with Audyssey MultEQ setup and optimization. They are also compatible with the newly introduced Audyssey MultEQ Editor app. For whole home audio, the new AVR’s also bring HEOS multi-room wireless music streaming. The HEOS system allows the receivers to interact with the HEOS line of products to create whole-house entertainment systems, all under app control. This unit is like new!