B-Stock: Fostex TH900MK2-OB Premium Reference Headphones - Onyx Black

The Fostex TH900MK2-OB Premium Reference Headphones - Onyx Black with a lacquer coating that reveals the grain of beautiful mizuame cherry wood by Sakamoto Otozou Shoten, a company that has been in business for 110 years.

BioDyna Diaphragm Made of Ultra-Fine Bio-Cellulose Fiber Material Is Used

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 ultra-fine 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 at 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 with 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.

Lacquer-Finished 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

Mizume-zakura is a variety of birch, a specialty of Japan. The wood is hand-finished by skilled craftsmen exclusively for the TH900 series.

7n Grade High-Purity Ofc Unbalanced Cable (ET-H3.0N7UB) Included

The unbalanced cable comes with a 7N (99.999999%) grade high-purity OFC (Oxygen Free Copper) unbalanced cable, which is essential for achieving high resolution and expressing the glossiness, and has high transmission capacity by eliminating impurities to the utmost limit. The plug sleeve is made of highly durable duralumin.

The Unit Is Equipped with A Detachable Connector Port and Uses 7n Grade Cables 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.

B-stock may have minor cosmetic scratches or dents and furthermore B-Stock is not covered by full manufacturer warranty.  Please call for details.

Product Specifications:

Type: Closed dynamic

Driver: φ50 mm neodymium magnet / Biodyna diaphragm

Frequency response: 5 to 45,000 Hz

Impedance: 25 Ω

Sensitivity: 100 dB/mW

Max input: 1,800 mW

Cable: 3 m Y-type 7N-OFC wire (detachable)

Detachable terminal: 2-pin (Terminal: gold-plated base, rhodium-plated specification)

Plug: 6.3 mm diameter gold-plated stereo standard plug

Accessory: Headphone stand, leather pouch

Weight: 390 g (excluding cord)