So a week ago after upgrading to an HDMI 2.1 tv I found myself with the conundrum of how to continue getting lossless native Atmos and DTS:X with an HDMI 2.0 limited AVR. I came across this device called the SHARC e-ARC converter from Thena Audio and for $188+$9 shipping I figured I would give it a shot before dishing out $2500+ for a new quality AVR. It arrived today, connecting it is as simple as connecting one labeled input “e-ARC HDMI 2.1 input from tv” and than second labeled “input to receiver” I turned on e-ARC and put it in the pass through mode and Atmos has been working flawlessly from both the Xbox Series X as well as my Apple TV 4K. No issues with lip sync or CEC hand shakes. It’s a neat little device that quite literally saved me thousands of dollars. I should also add that my Xbox Series X has no issues with VRR, 4K@120hz or any other HDMI 2.1 feature.