The Numark CD MIX USB is a modern update of one of Numark’s most popular product configurations of the past two decades – the CD MIX. CD MIX USB builds on its predecessor with the addition of dual USB drive playback capability so it can accommodate the DJ’s music collection on USB drives (in addition to CDs), making their collections far more portable and convenient. The CD MIX USB is essentially two complete CD/USB controllers in a single compact chassis. Each ”separate” controller is a full-featured unit, complete with jog wheel, built-in effects, microphone input, aux input, balanced output, mixer, fader and cueing function. There are also two headphone jacks for monitoring.