Peavey AmpKit LiNK audio interface for the iPhone.

The AmpKit LiNK audio interface for the iPhone platform. AmpKit LiNK is a high fidelity iPhone, iPod touch* and iPad interface for electric guitar, bass, or any line level source, with an output that can be connected to headphones, powered speakers or a PA. AmpKit LiNK's revolutionary CrossTalkEliminator solves the feedback problem inherent in existing unpowered iPhone interfaces. The interface can be used with any recording, processing, or tuning application, including Agile Partners' GuitarToolkit, one of the highest-rated applications in the iTunes App Store. (*Excluding first-generation iPod touch)

The AmpKit app is free to download from the App Store.