The Native Instruments Traktor Kontrol S4 digital DJ controller is equipped with the Traktor Pro 2 software. This controller comprises four full-featured mixer channels, with two FX sends, 3-band EQs, and filter knobs. It features the Stems controls to independently mix various elements, and create mash-ups, a cappellas, and much more. With its wide-frequency response audio interface, the DJs can easily connect turntables, CD decks, instruments, or MIDI gear.