IK Multimedia has introduced its new AmpliTube iRig interface and software solution for the iPhone, iPod touch, and iPad. The solution includes the iRig dongle, which connects to the device’s headphone port and offers a headphone monitor port as well as a port for connecting electric guitars, bass guitars, or other instruments using a 1/4-inch output. Once connected, the dongle interfaces with the company’s line of AmpliTube apps for…