Native Instruments TRAKTOR DUO DJ Software Feature-rich, 2-deck music mixing software based on the world's leading DJ software TRAKTOR PRO 2 playback decks with auto beat-gridding, advanced beat detection and SYNC LOCK for perfect mixing 6 first-class DJ effects: delay, flanger, reverb, filter, beatmasher, gater Auto Loop makes it easy to create synchronized loops on-the-fly with precise control over loop in and out points 2-channel mixer, emulating Allen&Heath filters as well as 3-band EQ and key control