Premium model with Japanese Cherry Birch housings finished by Japanese traditional "Urushi" lacquer and silver foil.
The highest model of Fostex open-back headphones. Aluminum photo-etched parts are integrated into the housing, which is made of high-grade Japanese Cherry Birch finished by Japanese traditional "Urushi" lacquer Bordeaux and silver foil inherited from the TH900. Equipped with our own 1.5 Tesla Biodyna diaphragm driver unit, each unit is carefully assembled one by one at our domestic factory with precise acoustic tuning.
"Urushi" lacquer and Bordeaux-finish housing that satisfies the pleasure of ownership along with high quality sound
The surface of the wood part is finished with a lacquer craft originally developed by SAKAMOTO Otsuzo Shoten, a company founded in 1900 (Meiji 33rd year) that applies traditional Japanese crafts to today’s industrial products. The lacquer used is black lacquer for the base and adhesive lacquer for the foil application. In order to express a prestigious sense of depth, various kinds of colored silver foils are smoked with sulfur and pasted like chigiri-e (tear-off pictures).
Wood quality: Mizume cherry
A variety of birch (Betula maximowicziana) native to Japan. The wood is hand-finished by skilled craftsmen exclusively for TH909.
Uses BioDyna diaphragm made of ultra-fine bio-cellulose fiber material
Utilizing know-how accumulated over many years, bio-cellulose fibers are blended with other fibers and other materials under optimal conditions. Low specific gravity, high Young’s modulus and high internal loss are realized. In addition to reproducing delicate, high-resolution and beautiful mid-high frequencies, the free edge with good linearity faithfully reproduces low mid-range frequencies with large amplitude.
BIODYNA” and “BIODYNA” are registered trademarks of Foster Electric Co.
What is Biocellulose Fiber?
Bio-cellulose fiber is made by advanced biotechnology and is an ultrafine fiber with a thickness of 20 to 50 nm (nanometer), about 1/1000 of natural plant fibers (such as cotton). These fibers are extremely pure α-cellulose, with almost no harmful impurity components, and exhibit the highest level of crystallinity. The ultrafine bio-cellulose fiber has excellent reproduction ability in the mid and high frequencies. When various fibers are combined with this fiber in an appropriate blend, a sound quality that combines the characteristics of each fiber can be obtained, enabling sound creation of a higher level. We have established a technology for mass-producing high-performance diaphragms by blending bio-cellulose fibers with other fibers under optimal conditions, utilizing the know-how we have accumulated over many years.
Magnetic circuit employing a repulsive magnetic field is equipped with an ultra-strong driver unit with a magnetic flux density of 1.5 tesla
A low distortion, ultra-strong, high-performance magnetic circuit with a magnetic flux density of 1.5 tesla using neodymium magnets provides a vast dynamic range.
Housing opening with double-layered etched aluminum parts
The aperture has an ingenious design with a double arrangement of etched aluminum parts that give a different impression depending on the light and accuracy of the light. The aperture ratio and the numerous fine-tuning of each internal part reproduce a natural sound field that is comfortable and comfortable to listen to.
Includes 7N grade high-purity OFC unbalanced cable (ET-H3.0N7UB)
The unbalanced cable comes with 7N (99.999999%) grade high-purity OFC (Oxygen Free Copper) unbalanced cable, which is essential for achieving high resolution and expressing this sense of luster, and has high transmission capacity by eliminating impurities to the utmost limit. The plug sleeve is made of highly durable duralumin.
It has a detachable connector port and uses 7N grade cable for internal wiring.
Features a detachable connector terminal with rhodium-plated treatment for high hardness, abrasion resistance, and corrosion resistance, and a detachable contact terminal on the headphone body side. Balanced connection is also supported with an XLR-terminal cable (ET-H3.0N7BL) (sold separately).
Ear pads with low-resilience cushions to reduce sound leakage
The earpads are specially designed with low rebound cushions that cover the back of the ears to reduce sound leakage, and carefully selected high-grade synthetic leather to provide a pleasant feel and comfortable fit even after prolonged use.
