The Pioneer DJ DDJ-WeGo is the only professional DJ controller with a built-in soundcard that will fit in a laptop bag. I'm a "two turntables and a mixer" kind of guy when I DJ, but taking out my whole rig can take its toll on my aging body. I've tried the other "DJ Controllers" out there and while great, most of them are big and heavy enough to rival my loaded coffin. This is where the DDJ-WeGo comes in. It gives you all of the features of the larger controllers with the quality and legacy of Pioneer DJ all in a portable package!