"The Behringer Pro Mixer DX2000USB Professional 7-Channel DJ Mixer is a professional-quality 7-channel mixer ideal for DJ applications. The mixer features 5 dual stereo inputs, plus 2 mono mic/line channels with ULN preamps, phantom power for condenser mics, gain control and clip LEDs. It also has a 45mm Infinium ""contact-free"" optical crossfader with adjustable friction to provide seamless track transitions and years of reliable use. The mixer offers a built-in USB interface for recording and playback of digital files. It supports plug-and-play operation with Mac and Windows computers with no drivers or setup required. A large software bundle is included for creating and manipulating tracks, including energyXT2.5 Compact Behringer Edition production software with an audio/MIDI sequencer, as well as Audacity vinyl restoration and recording, Podifier and Golden Ear podcasting software. Other features of the DX2000USB include a musical 3-band kill EQ with an on/off switch on all stereo channels, plus a headphone output with level and balance controls, a switchable split mode and a level display. Long-wearing 100mm faders and sealed rotary controls on all of the input channels provide smooth and reliable operation. An auto-talkover function offers separate sensitivity, time and damping controls, while main dim, main boost, punch and cut functions deliver a variety of mix options. An XLR sub output lets you connect a subwoofer, while a zone output lets you send a"