There’s alsoanauxiliaryjack that letsyou use the iMainGoXasan externalstereospeaker system for anydevicewith a 3.5 mmconnection -- laptop, cell phone, electric guitar, you name it.
The front of controller features bass, treble and volume knobs, a power toggle, LED indicator and a 3.5mm auxiliaryjack, while the back features a secondary 3.5mm jack, a powered USB port (allowing for the hookup of Bluetooth-enabling dongles, for example) and a toaster slot for the current and previous generation of AirPort Express routers.
That iOS app, Cube Jam, allows you to record and play along with tunes from your iDevice and connects via the i-Cube Link stereo auxiliary input from the headphone jack of a slate or handset.