Fostex TH909 Open Back Dynamic Headphones

TH909 is a flagship premium headphones based on the reputed closed type TH900mk2. While keeping the same sound characteristic, we further expanded and increased its sound field by adopting open-back construction and adjusting the acoustic circuit design. The optional balanced cable, model ET-H3.0N7BL is sold separately to meet growing demands for balanced connection with various headphone amps offering balanced 4-pin XLR out. Offers a wider dynamic range with low distortion using 1.5 Tesla 50mm driver with repulsion magnet. Proprietary “Biodyna” technology (bio-cellulose and inorganic fiber admixture) is used as a diaphragm material achieving rich very low frequency, natural mid-range and especially excellent presence in high frequency reproduction. Double layer structure etching metal grills are used as housing opening, which diversify the resonance points and offers gorgeous appearance. Housing cover uses Japan Lacquer Bordeaux finish manufactured by craftsmanship of “Sa-kamoto U