I have a 2015 model AV receiver that I bought mostly to be able to stream music from my local area network. As it turns out, it can't navigate my network. Otherwise, it does nothing meaningful that my 2004 model AV receiver did. It has whiz bang 2.2, Atmos and a host of other things that I really don't care about. It turned out to be a waste of money. Every year there are new codecs. Frankly most of them are worth ignoring.