Premium sound Sound that defies expectations. The 50mm FreeEdge drivers minimize unwanted resonances and distortion in the diaphragm for the most accurate sound reproduction possible. Natural acoustic properties of the real zebrawood housing aid in sound dampening to bring warmth and life to the sound. FreeEdge 50MM drivers The AH-D5200 headphones feature Japanese-made FreeEdge 50mm drivers. Built from materials chosen for rigidity and low mass, the FreeEdge drivers minimize unwanted resonances in the diaphragm to provide detailed, accurate sound. The drivers are mounted on vibration-reducing, resin baffles. These soft, compliant surround materials make it easier for the drivers to move in response to the music signal without flexing or distorting for the purest possible sound. Zebrawood housing Zebrawood has a beautiful, high-contrast, individually unique, and natural wood grain pattern. The exotic, high-density material dampens unwanted resonances for detailed sound reproduction and concert hall quality.