TH909LE
Premium Headphones-
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Premium open-back headphones featuring a proprietary bio-dynamic diaphragm, with acoustic tuning that unlocks its full potential.
Based on the TH900mk2, Fostex's highest-rated headphones ever, this newly developed open-back high-end headphone model.
This product is the [Simplified Packaging Version] of the TH909.
※ This product does not include a headphone stand.
※ This product features simplified packaging.
※ The included cable is 2m long with PVC sheathing (same cable material as the TH910, etc.).
- Body Color:
- Bordeaux
© 2014 Sakamoto Urushi Manufacturing. All rights reserved.
The Making of the TH900 Lacquer-Finished Housing
Features
A lacquered Bordeaux finish housing that delivers premium sound quality and the joy of ownership
The surface finish of the wooden parts is achieved using a lacquer craft technique uniquely developed by Sakamoto Otosho Shoten Co., Ltd., a company founded in 1900 (Meiji 33) that applies traditional Japanese craftsmanship to modern industrial products. The lacquer used consists of a base black lacquer and an adhesive lacquer for applying the foil. To express a sophisticated sense of depth, several types of silver foil, smoked with sulfur, are applied in a torn-paper-like manner.
Wood Type: Mizume Cherry
A premium wood species native to Japan, derived from a variety of the birch tree (Betula). Known for its fine, dense grain and hardness, Mizume Cherry yields a beautiful surface finish, making it ideal for furniture manufacturing. For the TH909, skilled artisans meticulously hand-finish each piece.
Features a BioDyna diaphragm utilizing ultra-fine bio-cellulose fiber material
Leveraging expertise accumulated over many years, we blend bio-cellulose fiber with other fibers under optimal conditions. This achieves low specific gravity, high Young’s modulus, and high internal loss. Alongside delicate, high-resolution reproduction of beautiful mid-to-high frequencies, the adoption of a free edge with excellent linearity faithfully reproduces even large-amplitude low-to-mid frequencies.
*”BIODYNA” is a registered trademark of Foster Electric Co., Ltd.
ー What is Bio-Cellulose Fiber? ー
Bio-cellulose fibers are produced using advanced biotechnology. Each fiber has a thickness of 20 to 50 nm (nanometers), making it an ultra-fine fiber approximately 1/1000th the thickness of natural plant fibers (such as cotton). This fiber is highly pure alpha-cellulose, containing almost no harmful impurities and exhibiting the highest level of crystallinity.These ultra-fine bio-cellulose fibers possess exceptional capabilities for reproducing mid-to-high frequencies. Combining them with various other fibers in appropriate blends allows for the creation of sound quality that integrates the characteristics of each fiber, enabling the production of sound at a significantly higher level. Leveraging our expertise accumulated over many years, we have established technology for mass-producing high-performance diaphragms by blending bio-cellulose fibers with other fibers under optimal conditions.
The magnetic circuit employing a repulsive magnetic field incorporates an ultra-powerful driver unit with a magnetic flux density of 1.5 tesla.
Featuring a neodymium magnet with a magnetic flux density of 1.5 tesla, it delivers an expansive dynamic range through a low-distortion, ultra-powerful high-performance magnetic circuit.
The housing opening incorporates a double-layered aluminum etched part.
The openings feature a unique design with double-layered aluminum etched parts that change their impression depending on light intensity and angle. Furthermore, through the opening ratio and repeated fine-tuning of each internal component, it reproduces a natural sound field that is comfortable and fatigue-free.
Includes high-purity OFC unbalanced cable
It comes with a 7N (99.99999%) grade high-purity OFC (Oxygen-Free Copper) unbalanced cable, which maximizes transmission capability by eliminating impurities to the utmost degree.
Ear pads featuring low-rebound cushioning to reduce sound leakage
We have specially designed ear pads that fit snugly around the back of the ear to minimize sound leakage. Featuring low-rebound cushions and premium synthetic leather, they provide a comfortable feel against the skin and a pleasant wearing experience even during extended use.
The surface finish of the wooden parts is achieved using a lacquer craft technique uniquely developed by Sakamoto Otosho Shoten Co., Ltd., a company founded in 1900 (Meiji 33) that applies traditional Japanese craftsmanship to modern industrial products. The lacquer used consists of a base black lacquer and an adhesive lacquer for applying the foil. To express a sophisticated sense of depth, several types of silver foil, smoked with sulfur, are applied in a torn-paper-like manner.
Wood Type: Mizume Cherry
A premium wood species native to Japan, derived from a variety of the birch tree (Betula). Known for its fine, dense grain and hardness, Mizume Cherry yields a beautiful surface finish, making it ideal for furniture manufacturing. For the TH909, skilled artisans meticulously hand-finish each piece.
Leveraging expertise accumulated over many years, we blend bio-cellulose fiber with other fibers under optimal conditions. This achieves low specific gravity, high Young’s modulus, and high internal loss. Alongside delicate, high-resolution reproduction of beautiful mid-to-high frequencies, the adoption of a free edge with excellent linearity faithfully reproduces even large-amplitude low-to-mid frequencies.
*”BIODYNA” is a registered trademark of Foster Electric Co., Ltd.
ー What is Bio-Cellulose Fiber? ー
Bio-cellulose fibers are produced using advanced biotechnology. Each fiber has a thickness of 20 to 50 nm (nanometers), making it an ultra-fine fiber approximately 1/1000th the thickness of natural plant fibers (such as cotton). This fiber is highly pure alpha-cellulose, containing almost no harmful impurities and exhibiting the highest level of crystallinity.These ultra-fine bio-cellulose fibers possess exceptional capabilities for reproducing mid-to-high frequencies. Combining them with various other fibers in appropriate blends allows for the creation of sound quality that integrates the characteristics of each fiber, enabling the production of sound at a significantly higher level. Leveraging our expertise accumulated over many years, we have established technology for mass-producing high-performance diaphragms by blending bio-cellulose fibers with other fibers under optimal conditions.
The magnetic circuit employing a repulsive magnetic field incorporates an ultra-powerful driver unit with a magnetic flux density of 1.5 tesla.
Featuring a neodymium magnet with a magnetic flux density of 1.5 tesla, it delivers an expansive dynamic range through a low-distortion, ultra-powerful high-performance magnetic circuit.
The housing opening incorporates a double-layered aluminum etched part.
The openings feature a unique design with double-layered aluminum etched parts that change their impression depending on light intensity and angle. Furthermore, through the opening ratio and repeated fine-tuning of each internal component, it reproduces a natural sound field that is comfortable and fatigue-free.
Includes high-purity OFC unbalanced cable
It comes with a 7N (99.99999%) grade high-purity OFC (Oxygen-Free Copper) unbalanced cable, which maximizes transmission capability by eliminating impurities to the utmost degree.
Ear pads featuring low-rebound cushioning to reduce sound leakage
We have specially designed ear pads that fit snugly around the back of the ear to minimize sound leakage. Featuring low-rebound cushions and premium synthetic leather, they provide a comfortable feel against the skin and a pleasant wearing experience even during extended use.
Bio-cellulose fibers are produced using advanced biotechnology. Each fiber has a thickness of 20 to 50 nm (nanometers), making it an ultra-fine fiber approximately 1/1000th the thickness of natural plant fibers (such as cotton). This fiber is highly pure alpha-cellulose, containing almost no harmful impurities and exhibiting the highest level of crystallinity.These ultra-fine bio-cellulose fibers possess exceptional capabilities for reproducing mid-to-high frequencies. Combining them with various other fibers in appropriate blends allows for the creation of sound quality that integrates the characteristics of each fiber, enabling the production of sound at a significantly higher level. Leveraging our expertise accumulated over many years, we have established technology for mass-producing high-performance diaphragms by blending bio-cellulose fibers with other fibers under optimal conditions.
Featuring a neodymium magnet with a magnetic flux density of 1.5 tesla, it delivers an expansive dynamic range through a low-distortion, ultra-powerful high-performance magnetic circuit.
The housing opening incorporates a double-layered aluminum etched part.
The openings feature a unique design with double-layered aluminum etched parts that change their impression depending on light intensity and angle. Furthermore, through the opening ratio and repeated fine-tuning of each internal component, it reproduces a natural sound field that is comfortable and fatigue-free.
Includes high-purity OFC unbalanced cable
It comes with a 7N (99.99999%) grade high-purity OFC (Oxygen-Free Copper) unbalanced cable, which maximizes transmission capability by eliminating impurities to the utmost degree.
Ear pads featuring low-rebound cushioning to reduce sound leakage
We have specially designed ear pads that fit snugly around the back of the ear to minimize sound leakage. Featuring low-rebound cushions and premium synthetic leather, they provide a comfortable feel against the skin and a pleasant wearing experience even during extended use.
The openings feature a unique design with double-layered aluminum etched parts that change their impression depending on light intensity and angle. Furthermore, through the opening ratio and repeated fine-tuning of each internal component, it reproduces a natural sound field that is comfortable and fatigue-free.
It comes with a 7N (99.99999%) grade high-purity OFC (Oxygen-Free Copper) unbalanced cable, which maximizes transmission capability by eliminating impurities to the utmost degree.
Ear pads featuring low-rebound cushioning to reduce sound leakage
We have specially designed ear pads that fit snugly around the back of the ear to minimize sound leakage. Featuring low-rebound cushions and premium synthetic leather, they provide a comfortable feel against the skin and a pleasant wearing experience even during extended use.
We have specially designed ear pads that fit snugly around the back of the ear to minimize sound leakage. Featuring low-rebound cushions and premium synthetic leather, they provide a comfortable feel against the skin and a pleasant wearing experience even during extended use.
Specifications
Main Specifications
| Model | Open-type / Dynamic-type |
|---|---|
| Driver | φ50mm Neodymium Magnet / Bio-Dynamic Diaphragm |
| Playback frequency range | 5 to 45,000 Hz |
| Impedance | 25Ω |
| Sensitivity | 100 dB/mW |
| Maximum input | 1,800 mW |
| Weight of main unit | Approximately 390g (excluding cord) |
| Cable | 2-pin, rhodium-plated specification x2 (L, R) ⇔ 6.3 mm gold-plated stereo plug / 7N (99.99999%) grade high-purity OFC 2 m ×1 |
| Accessories | Leather-like pouch |
Attention
● After use, wipe sweat, sebum, styling products, foundation, etc., from the ear pads and headband with a dry cloth.
● Ear pads are consumable items. They deteriorate with daily use and long-term storage, so replace them as needed.
※This product complies with the European RoHS Directive.
