TASCAM's iU2 is an audio interface for the iPad, iPhone and iPod Touch. It includes all of the features of TASCAM's USB audio interfaces, including a pair of mic inputs. The XLR inputs have phantom power for use with high-quality condenser microphones. These feed an onboard microphone preamp and A/D converter for better sound performance than those built into iPhone and iPad -- true stereo recording with low noise and less tendency to distort. The inputs also accept line-level signals or you can plug a guitar or bass directly into your device.
In addition to compatibility with iOS devices, the iU2 also works with Mac and Windows computers. A zero-latency monitoring path allows musicians to hear themselves directly through the unit; MIDI in and out are provided to interface with synths and drum machines, and a digital output connects to digital mixers or recorders.