The Numark 4Trak offers four decks of software control, a four-channel mixer and total command over all effects. This is the ultimate controller for Traktor DJ software. 4TRAK lays out a vast assembly of tactile controls in front of you, putting a playground of capability at your fingertips. Mix anything: 4TRAK's built-in four-channel mixer allows you to bring turntables, microphones, MP3 players and more into the mix. Tweak everything: High-resolution platters, exclusive Strip Search needle-drop technology and an expansive 12-knob FX KOMMAND CONSOLE give you more precise control over Traktor than ever before.