TRN KIRIN Planar Magnetic In Ear Monitors is a brand-new planar magnetic driver and inner acoustical structure in ear monitors. It combines a Nano-grade planar magnetic driver and custom acoustic construction. The design minimizes distortion, gives a precise image, and produces clear sound through the combination of asymmetric magnetic circuits and acoustics that are custom-designed for each enclosure. TRN Kirin Planar Magnetic In Ear Monitor are top-of-the-line and are outfitted with three brass nozzles gold-plated that allow for a change in the audio frequency. The size and diameter of the nozzle influence the overall sound quality. This design is unique and provides listeners with the ability to alter the tone on their headsets.