Sonos connect or DAC?

[medoc92]

A Raspberry PI with a decent DAC board (e.g. http://www.hifiberry.com), and a bit of appropriate software (e.g. Volumio http://volumio.org/ or Pete Manchester's MediaPlayer http://petemanchester.github.io/MediaPlayer/) may fit your purpose for a very limited budget and with no need to fidget with devices which may not be well adapted to what you want to do.