7.2ch. 8K AV Receiver with 3D Sound and HEOS Built-in Just as you would expect from any Marantz AV Receiver, the SR5015 pays extra special attention to audio quality, and it creates a highly immersive and richly detailed surround sound experience. Moreover, with the latest current feedback topology and the Marantz own-developed high-definition HDAMs, the SR5015 has both the power and the finesse to astonish and astound. Stream music from leading services, and listen to music in your whole home with HEOS Built-in. Enjoy exquisite video performance thanks to the latest HDMI technologies such as 8K/60Hz pass-through and upscaling, various HDR format support including HDR10, HDR10+, Dolby Vision, Hybrid Log-Gamma (HLG) and Dynamic HDR. Game with better immersion thanks to 4K/120Hz** pass-through, Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM). Extensively tuned by world-renowned sound acousticians at the most state-of-the-art facilities, the new Marantz SR5015 leverages decades of experience in Hi-Fi to drive exceptional, audiophile-quality surround sound for all your entertainment.