"This progressive 4 -channel DJ mixer is designed for DJ's of all abilities and experience from top pro DJ's to bedroom enthusiasts who want a compact quality mixer with pro features to mix any source - whether vinyl, CD or MP3. The USB port allows easy connection to a computer and the integration of digital media, which can be used to play back music files from a laptop, record mixes, or used with music software. The revolutionary 'X-FX' control allows easy signal routing to external FX in combination with the Xone VCF filter system. Brimming with features, this compact mixer is a favourite in many DJ studios, bars and clubs."