The RapcoHorizon i-JAM 3-n-1 Device is designed for any performer using electric instruments. It provides the player with 3 interfacing solutions in one small, portable package.
The iPhone Instrument Interface is for use with applications such as amplifier models, recording software apps, or guitar instructional applications, as well as others. The built-in amplifier allows continuous monitoring for the applications that do not provide this function internally.
The Practice Amplifier needs no other interface. You can just plug in your electric instrument, your headphones, and flip on the power, and play. The included 9V battery is replaceable.
The MP3 Play-Along Device uses the built-in instrument amplifier simultaneously with any MP3 player. You can just plug in any MP3 output device, your headphones, and your guitar to play along with your tracked music.