COS Engineering, founded by three close friends serious about audio entertainment, is dedicated to developing gear for the digital era, that renders music listening a sheer pleasure. D1, COS Engineering's first product, made its debut in 2014.
Make sure your device is updated to the latest firmware by checking the COS Engineering web site. Next sign up for a Roon subscription and download and install Roon on your Mac, PC, or Linux NAS. Connect your device via network or USB, and launch Roon to get going.