Apogee JAM Interface (previously owned/used)

Apogee's Jam is an audio interface designed to connect a guitar to an iPad, iPhone or Mac. Unlike most such devices, which utilise the bi-directionality of the headphone socket for input and output, and rely on the A-D converters in the host device, the Jam uses the dock port to connect and has its own on-board A-D converters. A further important distinction between the Jam and its competitors is that it has no audio output, so you'll need to connect headphones or speakers to the jack socket of the host device. The Jam requires iOS 4.3 or later and a Core Audio-compatible app, or Mac OS 10.6.4 or later if it's being used with OS X.