Mobile
Two DACs and three companions. Mojo 2 is the pocket one; Hugo 2 is the one that also works as the DAC of a real system. Then the add-ons, and which one you need depends entirely on which DAC you own: Poly clips onto Mojo 2 to make it wireless, 2go clips onto Hugo 2 to make it a streamer and a 4 TB server, and 2yu attaches to 2go to give it ordinary digital outputs for a different DAC. None of the three works on its own.
