Sonos CONNECT:AMP (ZP120) - 
Download the App, (ios,android, windows, or mac os)  Connect to your network router, Add your own speakers , and Stream.  
I'm using 3 Sonos units in my house alongside my traditional 2 Channel System and they've been great.    The unit in my dining area is powering a set of A/D/S L300's  but I've used it with other speakers without issue.
$390 
Shipping is within the CONUS