You can record stereo using the Idock
The iO Dock transforms your iPad 1 or 2 into a pro recording system! Just get your iPad in place, and get ready to start making great recordings. The Alesis iO Dock offers two XLR/TRS inputs, each with gain, phantom power, and guitar-direct modes. That way, you can record the way you like, and you have a lot of options - record your guitar in stereo, get a stereo capture of band practice, record your guitar or bass directly...whatever you need. However you use it, the iO Dock offers full recording, performing, and playback with virtually all audio/video apps in the App Store.