The DDJ-FLX4 makes it simple if you’re keen to MC or sing over the top of your sets because it mixes the audio for you. So, you can connect the controller to a single device and hear the sound of your mix together with the sound from the microphone as long as you don’t have a Bluetooth® device connected. This also makes the DDJ-FLX4 an ideal choice if you’d like to live-stream your sets because you can do it all from one device.