Detail 01
Smart Fader
Adjusts volume levels, bass balance, and BPM alignment to assist track transitions.

Independent shopping perspective
Built around two channels, the DDJ-FLX4 gives a DJ a compact hands-on layout for blending tracks, working EQs and channel faders, and triggering performance functions from eight pads per deck. Smart Fader handles volume, bass balance, and BPM alignment during transitions, while Smart CFX puts layered effects under one control. USB-C bus power and the integrated audio interface keep the rig direct: connect a computer or compatible mobile device, then route the master output by RCA. A mic can also be mixed internally.


Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.

Detail 01
Adjusts volume levels, bass balance, and BPM alignment to assist track transitions.
Detail 02
Applies layered effects from a single knob instead of requiring several parameter adjustments.
Detail 03
Provides the controller's master audio connection for speakers or an amplifier.
Detail 04
Lets microphone audio be mixed internally with the music signal.
Detail 05
Support bus power and device connection.
Final check

Product questions
Straight answers to the questions shoppers most often ask about this product.
Yes. It supports rekordbox for iOS and Android through USB or Bluetooth, and rekordbox is also supported on PC and Mac.
Supported software includes rekordbox, djay, Serato DJ Lite, Serato DJ Pro, and Traktor Play.
Use the RCA master output to connect the controller to speakers or an amplifier.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.