iRig Mic HD - the first high-quality digital handheld mic for iPhone, iPod touch, iPad and Mac
http://www.ikmultimedia.com/irigmichd for more information.
The successor to our highly popular iRig Mic, iRig Mic HD sports a 24-bit audiophile-grade A/D converter, a 44.1/96 kHz sampling rate, and a low noise/high definition pre-amp. You can count on iRig Mic HD to give you professional quality results, anytime and anywhere. It can handle the most demanding professional needs in the field or in the studio, and is comparable in quality to what you'd get in a mic costing three times as much.
Read more at http://www.ikmultimedia.com/irigmichd