The DJM-2000's "ProDJ Link" set-up enables LAN connection for up to four CDJs or turntables and two laptops at the same time. So music files stored on USB/SD cards can be shared among multiple players and DJs can easily switch sets.
Also, you can quickly sample live recordings and see status information (like live on-air status, channel number and more) on connected decks. Pioneer's DJM-2000 uses a balanced output amp, curve assignable, field replaceable faders and a Neutrik combo mic connections, with a two band EQ on the mic input.