The Fostex TH909 Premium Stereo Headphones have been meticulously designed for the studio engineer and the fashion-savvy music enthusiast. Its 1.5-tesla 50mm driver provides unmatched sound quality. The Japan Lacquer Bordeaux finish housing cover for the earcups provides a sleek and fashionable appearance. The double-layer structure and etching metal grills are used as housing openings and will diversify the sound, creating a speaker-like, more natural listening experience.