Pioneer's cdj400 is a flexible, affordable feature-packed performance dj cd player. The cdj400 features full mp3 playback, and playback direct from usb devices, such as usb keys, external hard drives and mp3 players. The cdj400 can also be used as a midi controller via the usb output, making it possible for the decks to control dj software and other applications, such as pioneer djs or serato scratch live etc. Inspired by the cdj1000, the cdj400's jog wheel features unique illumination with six different patterns so you can even personalise your own cdj 'slip mats' or jog sheets. In addition to the jet, wah and roll digital jog wheel effects, the cdj400 features the worlds first scratch effects in vinyl mode. Bubble simulates a scratch technique and is great for spin backs, while trans is like rhythmically transforming with a mixer's cross fader and wah resembles the guitar wah pedal. Furthering your creative potential, a new beat loop divide facility rhythmically dices loops to fashion beats with drama, intrigue or whatever your desired effect. It is easily adjustable using its (- and +) buttons during loop playback, thereby creating loops with mind-melting, dancefloor-destroying twists. Besides the beat loop divide, the cdj-400 lets djs create flawless four-beat beat loops and hot loops. For the latter hit the hot loop (in/out point) buttons during a loop to re-trigger the loop. Up to 10 cue/loop points per disc, for up to 920 discs, can be stored in memory and transferred by usb key between cdj-400s.