What is cdj 400?

The CDJ 400 is a professional-grade digital media player used for DJing. It was first introduced by Pioneer Electronics in 2007.

Features of the CDJ 400 include:

1. CD and USB playback: The CDJ 400 allows DJs to play music from CDs or USB storage devices.
2. Beatmatch and BPM sync functions: The player has the ability to automatically match the tempo of two tracks using the BPM Sync function.
3. Advanced loop functions: DJs can set loops (repeated sections of a track) in various lengths and also use the "Loop Cutter" function to create new loops on the fly.
4. Vinyl mode: The CDJ 400 can simulate the feel of vinyl by allowing DJs to scratch and cue tracks.
5. Cue point memory: DJs can set and store multiple "cue points" (points in a track where they want to start playing from) for each track.
6. Jog dial: The player has a large, high-quality jog dial for precise control over playback.

The CDJ 400 is widely used by DJs around the world due to its reliability and high-quality features. It is often seen in clubs and at music festivals.