Want to mix and scratch like a professional DJ? To be a good DJ you need to understand the concepts of mixing tracks, adding cool effects, and of course you need a good sense of rhythm to line up the beats. This how to video explains the difference between the Pioneer CDJ400 and the CDJ800 mixers. Is there a difference? This video shows you the two CDJ's side by side to try to see if there is any difference between the two regarding the use of the platter for scratching. Watch this DJ tutorial so you can learn which mixer is better to use for scratching: the Pioneer CDJ400 or the Pioneer CDJ800? You decide.