I have a Roku 4801x device connected to a TV that accepts only stereo PCM audio. Everything works fine for all the sources I currently use. I am considering the purchase of an ATSC 3.0 receiver that would play through my Roku, but I understand that ATSC 3.0 stations are broadcasting their audio using AC4 encoding and the receiver does not transcode AC4 audio. I have seen an announcement that model 4800 handles AC4 audio. Is that feature also included in my 4801x?
I think it's safe to say that the 4801 (and 4802 for that matter) is identical to the 4800. I think the 4801 was a Walmart exclusive and doesn't have a USB port, but is otherwise the same.