Numark DJ iO2 | USB DJ Audio Interface for Laptop Performers (24-bit / 44.1 kHz) Easily connects to your computer for pro-quality audio output from any DJ software Works with any digital DJ controller, including the Numark Mixtrack II; Enables USB audio-computer recording for recording the mix and microphone signals Studio-grade 24-bit/44.1 audio quality 1/4-inch headphone output with volume control for easy track cueing; 1/4-inch microphone input for MCing, performing, singing, and more USB-powered; no power adapter required; Ultra-low-latency for real-time, responsive mixing Stereo RCA master output; Class-compliant USB connection that instantly works with your Mac and PC; no drivers required