Alesis iO Dock Audio Interface for iPad The world's first pro audio dock for iPad; use the power of your iPad to record audio, compose music and perfect your mix Simultaneously connect microphones and instruments including guitar, studio monitors, PA speakers, headphones, and MIDI controllers Universal device works with virtually every audio and MIDI app in the App Store; Core MIDI compliant Input channel gain controls and switchable phantom power on (2) combo (XLR+1/4-Inch) inputs; mic/line and HiZ (guitar) switchable Outputs: (2) 1/4-Inch and 1/4-Inch headphone with separate volume controls Control inputs: MIDI In, MIDI Out, USB MIDI, and assignable 1/4inch footswitch Video output can send visuals to a projector, TV or monitor