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What The FLX4 & FLX2’s Smart Fader Button Does

12 Oct 2026
What The FLX4 & FLX2’s Smart Fader Button Does

Smart Fader is a button on the Pioneer DJ DDJ-FLX4 (and the DDJ-FLX2) that takes care of matching the speed of your tracks for you as you move the crossfader. Slide from one deck to the other and the tempo changes gradually so the two tracks stay in time, and by the end you&#8217…

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