The Fostex TH1100RP are flagship RP headphones that incorporate Fostex's proprie- tary state-of-the-art premium grade RP planar magnetic driver technology in a solid wood hous- ing. Dyed with Aizome from Tokushima, known as Japan's reknowned indigo dyeing method, the headphones are carefully assembled in Japan. This one-of-a-kind texture brings out the beauty of the individually different wood grain that is unique to traditional Aizome. Fostex's 50 years of flat diaphragm RP technology come together beautifully in this model of flagship open type headphones.