Fostex Premium Stereo Headphones
Building upon the success of the TH900mk2, the Fostex TH909 are premium reference open-back headphones well suited for professionals and audiophiles. The TH909 feature a remarkably designed driver unit with a 1.5 Tesla (15,000 gauss) magnetic flux density and bio-dynamic 50mm diaphragm. The detachable connectors use a rhodium plating finish, which offers high hardness with abrasion and corrosion resistance. The housing features a traditional Japanese lacquered Bordeaux finish, while the updated earpad design provides a low-resilience cushion to ensure a comfortable fit. The included unbalanced cable is made from 7N grade oxygen-free copper (OFC) with a gold-plated 1/4" TRS plug and can be replaced with optional cables such as a balanced cable with XLR connectors. Additionally, the headphones come with a stand and carrying bag.
- Wider dynamic range with low distortion
- Uses 1.5 Tesla 50mm driver with repulsion magnet
- Diaphragm Material: Proprietary "Biodyna" technology (bio-cellulose and inorganic fiber admixture)
- Provides rich low frequency, natural midrange, and remarkable presence in high-frequency reproduction
- Double-layer structure etching metal grilles are used as housing opening
- Housing cover uses Japan Lacquer Bordeaux finish manufactured by craftsmanship of "Sakamoto Urushi Factory" established in 1900
- Custom-made 7N grade (99.99999%) high-purity OFC (Oxygen Free Copper) unbalanced cable (model ET-H3.0N7UB equivalent) is included as standard
- Equipped with detachable connector
- Supports balanced connection with optional XLR cable (model ET-H3.0N7BL)
- Detachable connection parts use rhodium plating finish offering high hardness with abrasion and corrosion resistance
- Updated earpad design adopts a low-resilience cushion to achieve a comfortable fit and the best audio performance
- Compatible with the optional cables made for the TH900mk2
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Specifications
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Headphone
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Driver Size
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2" / 50 mm
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Driver Type
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Dynamic
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Magnet Type
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Neodymium
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Design
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Over-Ear (Circumaural)
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Earcup Style
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Open-Back
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General
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Frequency Response
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5 Hz to 45 kHz
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Sensitivity
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100 dB at 1 kHz / 1 mW
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Impedance
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25 Ohms
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Maximum Power Handling
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1800 mW
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Connectivity
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Audio Connector
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1/4" TRS
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Connector Plating
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Gold
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Cable
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Cable Design
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Y-Type
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Cable Color
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Black
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Detachable
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Yes
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Cable Conductor Material
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Oxygen-Free Copper
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Cable Length
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9.84' / 3 m
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Physical
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Weight
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0.86 lb / 390 g without Cable
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