For more information on using FX Units, refer to Working with FX Units.
5.4. Front Panel View
The  front  panel  hosts  controls  for  making  crossfader  assignments,  and  sockets  for  connecting
headphones and a microphone.
Front panel.
(1)  Crossfader  Curve  selector:  Selects  the  curve  which  lets  the  audio  signals  fade  in  and  out
when moving the crossfader from one side to the other. For more information, refer to Assigning
Mixer Channels to the Crossfader.
(2) Crossfader Assignment selectors C, A, B, D: Assigns the individual Mixer channels to either
the left or right crossfader side, or unassigns them when set to center position. For more informa-
tion, refer to Assigning Mixer Channels to the Crossfader.
(3) MIC D: Connects a microphone to Mixer Channel D using an XLR cable. For more information
on adding microphones, refer to Integrating Microphone.
(4)  PHONES  OUT  1/8"  and  1/4":  Connect  one  or  two  pairs  of  headphones.  When  two  pairs  of
headphones are connected, the maximum headphone volume level is decreased.
5.5. Rear Panel
The rear panel hosts all sockets for connecting the device to the computer, for powering it up, and
for connecting external devices.
Rear panel.
(1) MAIN OUT RCA R / L: Connects the S4 to a power amplifier using unbalanced RCA cables.
(2) MAIN OUT XLR R / L: Connects the S4 to a power amplifier using balanced XLR cables.
(3) BOOTH OUT 1/4" R / L: Connects the S4 to a power amplifier for the DJ booth using balanced
1/4" cables.
(4) LINE IN D RCA R / L: Connects a line level audio source, e.g., a CD player to Mixer channel D
using RCA cables.
(5) PHONO / LINE IN B RCA R / L: Connects a phono level device, e.g., a turntable or a line level
audio source, e.g., a CD player to Mixer channel B using RCA cables.
(6) GND: The GND (ground)  screw connects  the ground wire of turntables  to prevent  buzzing in
the audio signal.
TRAKTOR KONTROL S4 Overview
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