The iFi SPDIF iPurifier is your least expensive option and may be all you need to elevate the Sonos sound (should you decide to keep it). It sells for about $150.
http://http//ifi-audio.com/portfolio-view/accessory-spdif-ipurifier/
IMHO if you are only going to be streaming Apple Music and/or internet radio, spending $1000 is kind of overkill even for audiophiles.
http://http//ifi-audio.com/portfolio-view/accessory-spdif-ipurifier/
IMHO if you are only going to be streaming Apple Music and/or internet radio, spending $1000 is kind of overkill even for audiophiles.