Denon's "Free Edge" drivers are tuned for powerful, well-rounded sound Sustainable bamboo earcup housings for natural sonic warmth Designed and hand-crafted in Denon's Shirakawa Audio Works facility in Japan The AH-D9200, Denon's flagship headphones, boasts proprietary 50mm FreeEdge drivers, Neodymium magnets, and Japanese bamboo wood housing for natural dampening. Experience crystal-clear, distortion-free sound in a design that's both elegant and ergonomic.