IMO the world of surround sound has been won by PC's long ago. I've never heard anything in any price bracket that can match a cheap 5.1 system and a properly configured onboard soundcard for positioning. And if sound quality is really a massive deal for you then you can replace the cheap system with something with a bit more quality.
Hell these days you can have 3 top of the line balanced output DAC's outputting 5.1, or 4 dac's for 7.1 etc etc all bitperfect whatever encoding you want and 4k video and insane quality audio all reproduced perfectly and can be controlled from an app on your phone or even by your own voice.
Its not magic, and its availiable today.
How do You output surround sound to three separate dacs? Some kind of an S/PDIF breakout board?