Whaa? One could plug his hifi streamer into his big TV or projector, sit back with a wireless keyboard/mouse and watch Netflix too??? HBO Max too??? Watch music videos and concerts with hifi audio on a streamer??? Play games??? Send emails??? The streamer (pc) can do that??? Whaaa???
I’ve been doing just that for the better part of, oh, 20 years and I honestly cannot fathom why anyone would set up their home cinema otherwise. In the past I would fish CAT cables through the walls to my media room, but nowadays you can easily stream perfectly steady 4K video over a garden-variety wifi connection. I am not using this setup for 2-channel audio listening though. One small caveat is that HTPCs often don’t play well with ARC / eARC. Mine sure doesn’t. But that’s a minor nit.
@deep_333 One thing I would add to your PC list is cooling fans. You don’t want them, and that can be a little tricky. CPUs and GPUs run hot. Liquid cooling works but will rule out most ITX-class enclosures because it's bulky. The good news is that audio processing is not CPU-intensive so you can run any number of low-power chipsets yet have power to spare. Seems like manyaudiophile streamers run ARM processors.