The iRig is a revolutionary product that allows you to connect your guitar/bass to your iOS device. From there, your signal travels through the wonderful world of AmpliTube iOS software to give your guitar sound life and meaning. To use the iRig, you simply plug the 3.5mm TRRS end into the headphone jack of your iOS device. Then plug your guitar into the 1/4" jack using a standard guitar cable. To monitor your sound, plug your headphones/line out into the 3.5 mm headphone jack on the iRig. That's all there is to it. Now you're ready to Jam!