Pro-Ject Audio Stream Box S2 Ultra Network Audio StreamerDesigned by hi fi legend John Westlake, the Stream Box S2 Ultra is a simple, effective way to link your traditional hi fi with your digital music, adding a host of features and sources that come neatly packaged in a palm sized chassis. Connect the Stream Box S2 Ultra to your system via USB to enjoy all the quality and convenience of high resolution audio streaming. The Stream Box S2 Ultra has everything you could want ready to go: listen to Tidal,