Pioneer Dj DDJ-FLX10 4-Channel DJ Controller for rekordbox and Serato DJ Pro (Black) - Manual (Page 56)

Part names and functions
56
En
11 SOUND COLOR FX buttons
Turn Sound Color FX on/off.

Read: Using Sound Color FX (page 99)
 Using Serato DJ Pro
1 FX PART SELECT (VOCAL, DRUMS, INST) buttons
Press:
Select a Stem to be applied with an effect when using Beat FX or Sound Color
FX.
The effect applies to the Stems which are lit.
• For sound from the external inputs, microphone sound, and sampler sound,
the effect applies to all Stems, even if the buttons aren’t lit.
2 Effect section display
Displays the effect name, BPM, parameter, etc.
3 BEAT  button
Press:
Decreases the number of beats for synchronizing the FX sound each time the
button is pressed.
[SHIFT] + press:
Sets the FX Tempo mode to BPM Auto mode. The track’s BPM is used as the
basis for the FX tempo.
4 BEAT  button
Press:
Increases the number of beats for synchronizing the FX sound each time the
button is pressed.
[SHIFT] + press:
Sets the FX Tempo mode to BPM Tap mode. The BPM used as the basis
for FX is set in time with your tapping of the button.