The Hybrid 303 seeks to provide digital functionality with digital DJ software, yet also allow analog connectivity for traditional devices. The two Kontrol One units allow the user direct control over digital DJ software via MIDI. The included DJM-303 provides a dual USB soundcard that can be used to output sound from the digital DJ software. Should the user want to add external devices like CD players or turntables, the DJM-303 also has a number of RCA connections for direct input.