Numark, the world’s leading manufacturer of DJ technology, introduces the MIXDECK QUAD, a professional-grade DJ controller and player with integrated effects, direct connection for iPad or iPod touch, and inputs for CD and USB flash drives. Numark will unveil the MIXDECK QUAD at Hall 5.1 Stand #B45 of the 2011 Musikmesse show from April 6-9 in Frankfurt, Germany.