Notable mentions should also be noted for the Numark Orbit Controller - a new wireless switching controller designed for DJ's but with many other MIDI controller uses too. With 12 backlit buttons and a two plane G-sensor you can join your people in the audience just be free to roam your room you know, doing stuff.
iConnectivity - MIDI+ - great multi-format MIDI interface, the 4+ has RTP MIDI over ethernet, four USB host sockets - which allow you to plug up MIDI controllers or your iPad/iPhone and audio pass through which lets you route your iOS audio as a device directly into your DAW - very nifty.
Designed for dedicated use with rekordbox dj professional performance application
Emulate multiple mics, change proxmity and axis on the fly with UA Hardware