Ah, I think he must have been using the iPad to control the sound board.
http://www.presonus.com/products/StudioLive-16.4.2
Even better: wireless control!
You’re mixing a live show with an old-skool mixer—make that any mixer other than StudioLive—and you need to check the sound underneath the balcony—or in the balcony, for that matter. Or you’re sound-checking and want to hear the stage monitors for yourself. If you can’t leave the mixing station, you have to rely on someone else’s ears. If you don’t have a reliable crew, you don’t have a chance.
You can say goodbye to that problem if you use a 16.4.2 and an Apple iPad®! With StudioLive Remote for iPad—available free from the Apple App Store—you have complete, real-time, wireless remote control over Virtual StudioLive, which in turn offers real-time control over the StudioLive mixer. As long as you have a wireless connection between your iPad and computer (and are connected via FireWire to the 16.4.2), you are in control of the console. StudioLive Remote is easy to use, provides control of almost every feature of the StudioLive, and looks and feels like an iPad app should.
Around $1800...
http://www.musiciansfriend.com/pro-audi ... ital-mixer