The IK Multimedia iRig HD 2 sports a new 1/4" output jack for seamless live performance integration. An added switch allows dual-mode operation: FX lets musicians process and send their signal to an external amplifier without an adaptor. THRU sends a clean signal, letting musicians use their mobile device as a tuner, recorder or other utility. And much like its predecessor, the iRig HD 2 has an input gain control that can be adjusted to provide optimum audio quality with different instruments an