http://www.ixymic.com/

The RØDE iXY is the ultimate recording microphone for iPhone® or iPad®. With up to 24-bit/96k* recording and on-board high-fidelity A/D conversion, your iXY recordings are rich, smooth and accurate. At the heart of the iXY is a matched pair of ½” cardioid condenser capsules, fixed in a perfect 90 degree ‘near-coincident’ alignment. This results in immersive and true-to-life stereo recordings, captured in incredibly high detail. The iXY is supplied with a foam windshield for outdoor recording as well as a reinforced protective zip case to ensure your iXY is available whenever you need it.