The chromecast audio sounds like a good idea,good price,but if you prefer a hard wired option, I haven't found anything as yet better than the amazon fire tv box,yes you hook it and set it up with the tv but once it's running,you're device finds it and phone or tablet becomes the remote for spotify with the actual aftv receiving the music hard wired to the net .so you can use it without needing the tv on,but it still needs to be connected via hdmi to the tv and the optical out to the dac,but it has to be the last model as the new one...like the new Apple TV has no optical out, and I really don't know what there thinking about with the omission of a digital out on these devices.So if you already have a decent dac and want to stream music to a two channel amp without spending on a dedicated streamer that will have it's own dac,then the options seem to be...chromecast audio,last gen Amazon fire tv or maybe an older Logitech squeezebox,but I'm not sure if there is any support for them anymore,and if you're in apple world then stream music you already have on iTunes from your pc to a last gen(3rd)Apple tv,apples music streaming service is not available on the 3rd gen atv in case your thinking of that option (i have one)it's available on the new version i believe,but that ain't got any digital out capabilities,unless you use a digital reciever via it's hdmi socket. If anyone has anymore options I'd be glad to hear them.oh,also the ps4 can use Spotify connect,but would you really want to be using that for Spotify plus gaming.I'd rather keep my ps4 for just it's gaming and maybe movie playing abilities to keep the hrs use down.if you know what I mean?