To be honest, in a setup wit two controllers, there's a small problem with Traktor because the software recognizes only one on booting. Therefore, I must go to the controller manager and reset the mapping to both controllers. I used a mapping downloaded from the Traktor Bible, which is really great because of all the secondary functions the maker of the mapper included. If there are questions, I'll answer! It's a great controller with a extremely sensitive top-platter. Combined with traktor it's even good enough to actually scratch and so forth. The controllers, just like the MM-1 only feel quite plastic and don't look like they're very high quality but the standard of engaged materials is really good in comparison to it's price.