Tascam iUR2 USB Audio/MIDI Interface for iPad, Mac and PC USB 2.0 Audio/MIDI interface that works with Mac OS and Windows (supports WDM as well as CoreAudio and CoreMIDI) Can also be used with iPad/iPad 2, iPhone 4/4S or iPod touch 4G TRS balanced mic/line input (up to 24 dBu input level) Phantom power for condenser microphone (needs external USB power) Left channel switchable to instrument level