Banggood has the IK Multimedia AmpliTube iRig Guitar Interface for iPhone, iPod Touch, and iPad, model no. 631639, for $1.99 (regularly $39.99) with Free Shipping for a limited time. Deal ends January 27, 2015 at 11 am est.

The iRig interface adapter is the easiest way to get your instrument’s signal into iPhone/iPod Touch/iPad. Simply plug iRig into your mobile device, plug your instrument into the iRig, plug headphones or amplifier to the output and you are ready to rock! The iRig is the ideal companion not only to the mobile AmpliTube app, but also works with any other recording, processing or tuning app, including Garage band for iPad. Plus, you can also use the iRig with line level signal sources such as synthesizers, keyboards or mixers.