First, mobile microphone/interface for acoustic guitar. Patented device from IK Multimedia, which allows the acoustic guitar players to use AmpliTube apps. This acoustic pickup can be placed in the circular sound-hole of your guitar in seconds. It provides high quality audio when recording on iPhone, iPad and Android. It has MEMS microphone with an omnidirectional polar pattern and highly detailed sound. The calibration process optimizes the guitar sound as if it has been externally mixed with high-quality studio microphones. The microphone also includes rubberized mounting clip, thin body and female stereo output jack placed on the in-line cable. It is made of soft rubber material that does not damage the surface of your acoustic instrument. It is designed for all stringed instruments with circular sound-hole.