Without a doubt, you will not get the full 4k spectrum with an HDBaseT balun. Maybe a crippled, version. HDR 10 bit requires a full 18Gbps, which is IMPOSSIBLE with HDBaseT. Impossible. Someone (most likely a salesman) will tell you otherwise, but it's not true. The ONLY WAY you will get the best possible image is to use an 18Gbps certified cable from receiver to display and 18Gbps interconnects.