Front & Rear panels

MASTER OUT (TRS). Connect this output to a PA system or powered monitors. The level of this output is controlled with the Master knob (42) on the top panel.
MASTER OUT (RCA). Use standard RCA cables to connect this output to a speaker or amplifier system. The level of this output is controlled by the Master knob (42) on the top panel.
MIC IN/VOL. Connect a 1/4" microphone to this input and use the knob to adjust its input signal (dB)
INPUT SELECT. Put the switcher to the MIC position if you wish to use the Microphone Input as the Input Source of the built in audio Interface of the DDJ-Ergo. Put the switcher to the AUX position if you wish to use the Auxiliary Input as the Input Source of the built in audio Interface of the DDJ-Ergo (See Advanced Audio Setup)
AUX IN/VOL. Connect an external audio source (CD player, media player etc.) to this input and use the knob to adjust its input signal (dB)
ON/OFF. On/off switcher. The DDJ-Ergo is USB powered.
USB. Connect a USB cable with your computer. This USB connection sends and receives audio and control information from a connected computer.

HEADPHONES. Connect your 1/4" or 1/8" headphones to this output for cueing and mix monitoring. The Volume of the Headphones Output is controlled by the PFL VOL (36) knob at the top panel.