Effects (FX) with upfaders

Hi, yesterday all of a sudden my upfaders began to work with a neat 1/2 beat echo when turning the volume down. I don’t know if I activated that by accident or if it was a surprising yet welcome bug. In case it’s not a bug, does someone know how can I turn it on and off? I would really like to have the option use it frequently.

Djay Pro 5
MacBook Pro M1 Pro with Sonoma
Pioneer DDJ-flx4

Hi @CCuenca, sorry for the late reply. feature is turned on/off using the “smart fader” button.
Pro tip: do shift + smart fader to get a reverb instead.

Thanks a lot @Slak_Jaw. Great feature!

You’re welcome @CCuenca