Liquid, sharp action. HDMI 2.1a supports a range of higher video resolutions and refresh rates, including 8K/60 and 4K/120, as well as dynamic HDR formats. The combined refresh rate of 60 Hz allows for smooth and sharp representation of high-speed action. Dolby Vision and HDR10+ technology enhance your favorite content with crisp, clear images and dynamic colors. Perfect positioning made effortless with AccuEQ room calibration. This simplifies the initial setup of your home theater by ensuring that your receiver and speakers are correctly calibrated to the room they are in. This technology compensates for differences in speaker size and distance, so you can enjoy excellent audio playback regardless of the room you are in. An outstanding combination for surround sound. The Dolby Atmos and DTS:X formats allow sound engineers to position sound anywhere in 3D space. When playing back any Dolby format, activating the Dolby Atmos Height Virtualizer creates an even more immersive listening experience by generating a virtual surround and height effect from conventional speaker arrangements, without the need for additional surround or height speakers.