Pioneer Dj DDJ-200 SmDJ Controller for WeDJ and rekordbox - Manual (Page 157)

rekordbox
157
En
 Monitoring the master sound with the headphones
1 Mark the [MIXER] check box at the top of the rekordbox dj screen.
The [MIXER] panel is displayed.
2 Press the [MASTER CUE] button.
3 Adjust the [HEADPHONES LEVEL] knob on the [MIXER]
panel to adjust the volume for monitoring with headphones.
Quitting the system
1 Quit rekordbox.
2 Disconnect the USB cable to turn off the unit.