I'm thinking of stepping into 4K, but not sure what is happening when HDR is added to the content and how video/audio is passed (and what level audio) when streaming from Apple TV or Directv or my 4K Oppo. I have a 1080 TV, soon to be projector with 4k HDR and a 4K(non HDR preamp). Let's say I watch Directv content that is 4K, but this show has HDR. What happens to the signal? Can I set my Directv to stream 4K, but non-HDR with full DSD audio? It seems the latest Apple TV can do that now. What if I have a 4K HDR movie in my Oppo. Will it output 4K non-HDR or do I have to go straight to source with HDMI? If not, are there now HDMI switches that can take up to 4K HDR content and send out 4K HDR to sources and HDMI DSD to preamp? I've seen where they do the coax out digital, but that is not the HD audio. I also assume I need the matrix to be able to send a separate 1080 signal to the TV for that viewing.