The AKG C 411 PP Condenser Pickup Microphone with XLR is a compact condenser pickup microphone that is ideal for on stage capture of acoustic guitar, mandolin, violin and most other stringed instruments. The C 411 PP works by converting the vibrations of an instrument's soundboard into an electrical signal. The microphone is specifically designed for direct attachment to an acoustic guitar, banjo, zither, or bowed string instrument and is tailored for accurate, coloration-free sound reproduction. Furthermore, there is a supplied adhesive compound for attaching the pickup that is intended to leave wooden, plastic and metal surfaces undamaged. Ideal for hardwire installations, the C 411 PP is equipped with a standard XLR termination for phantom powering.