How to change the crossfader to do cut or scratch mode ?
Sometimes some DJ use the crossfader to cut one track for scratching, or
Mixing. For example in virtual dj you can set the mode of the crossfader, where can I do that in traktor pro 2.5 ? Is such mode available for the crossfader ?
I don’t have Traktor fired up, I believe if you hold shift and hit the channels FX buttons (! for left 2 for right) it assings a channel to the crossfader. if you hit the same button twice it removes it from the crossfader.
It has been a while since I have used my s4, but I think that was how i did it.
Hey, this response is pretty late, so I don’t know if you’ve already got the answer or not, but there’s an option in preferences under the Crossfader Section of the Mixer panel with parameters “Smooth” and “Sharp”. These will affect the rate at which the volume for each track will be lowered using the crossfader. Set the bar all the way to “Sharp” and it will only cut as opposed to fade.
Hope this helped 
that is correct…BUT don’t expect a super sharp cut…i’d compare it to be a little sharper then a stock vestax pmc mixer without the lag spacers
You can also map the cross fader curve to a knob or fader and change it on the fly.