The Anthem MRX 710 is not a receiver to be trifled with. More like a set of high-end separates than a receiver, the MRX 710 delivers sound that is as musically satisfying as it is cinematically energizing. Expect eight HDMI inputs and dual HDMI outputs, along with 4K upscaling and pass-through. The 7.1-channel receiver also comes bundled with the Anthem Room Correction System, aka “ARC,” allowing you to professionally calibrate the receiver’s output using an independent USB microphone, microphone stand and a laptop computer. It’s even adorned with a slew of great speaker configuration options and a robust power supply that delivers 120 real-world watts per channel. While not compatible with Dolby Atmos, the MRX 710 remains one of the most sonically-satisfying receivers we’ve ever experienced. —Caleb Denison, Digital Trends Superb high-quality amp performance includes Anthem’s Advanced Load Monitoring to keep a constant eye on output. ARC® 1M, an enhanced version of Anthem Room Correction ensures the speakers’ award-winning sound isn’t lost in a less-than-perfect room situation. Outstanding power – 7 channels in MRX 710 and MRX 510; 5 channels in MRX 310 (see Technical Specs section for power output). More HDMI inputs! 7 + 1 = 7 rear inputs and one front-panel input on MRX 710 and MRX 510. 7 rear inputs on MRX 310. Dual HDMI outputs. 4K Upscaling and Pass-Through. HDMI Audio Return Channel Excellent cosmetic and functional condition. Remote, power cord, room correction microphone, original box and manuals included. Stand (pictured) not included.