26-Nov-2021, 20:27
Looks like the DDJ has only USB and no dedicated audio output, so I agree that a computer or something is probably necessary to get the sound to your Phantom. Some Macs have a built-in optical output (as part of the regular headphone/audio out jack.) If yours does, then a cable with a "mini TOSLINK" plug on one end and a regular TOSLINK plug on the other would work. If not, then you'll need a USB-to-TOSLINK converter (or an external audio interface with TOSLINK out). No idea about the precise latency, other than to say that my Mac Mini-->TOSLINK-->Phantom setup had much lower latency than AirPlay.