TRRS Guitar Interface with Stereo Headphone Return, Switchable Return/Thru 1/4" Output, Input Volume Control, and Mic Stand MountK Multimedia's iRig 2 is a simple guitar interface for your iPhone, iPad, iPod touch, or Android gadget, and it also works with most Mac computers. This adapter plugs into the 1/8" TRRS jack on your device, sending your guitar or bass signal to your favorite effects or r..