Fostex TH909 audiophile open-back headphones
The Fostex 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.
- Offers a wider dynamic range with low distortion using 1.5 Tesla 50mm driver with repulsion magnet.
- Proprietary “Biodyna” technology (bio-cellulose and inorganic fibre mixture) 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 Urushi Factory” established in 1900.
- Custom made7N grade (99.99999%) high purity OFC (Oxygen Free Copper) unbalanced cable (model ET-H3.0N7UB equivalent) is included as standard.
- Equipped with detachable connector which supports the balanced connection with optional XLR cable (model ET-H3.0N7BL). Internal wiring also uses 7N grade cable.
- Detachable connection parts use rhodium plating finish offering high hardness, excellent abrasion and corrosion resistance.
- Newly designed ear pad adopts a low-resilience cushion to achieve comfortable fit and best audio performance.
Driver: Dynamic, 50mm
Operation Type: Open back
Impedance: 25 ohm
Sensitivity: 100dB/mW (at 1kHz, 1mW)
Freq. response: 5Hz – 45kHz
Max Input Power: 1,800mW
Weight: 390g (excluding the cable)
Cable: Detachable 3m 1/4” unbalanced stereo phone (model ET-H3.0N7UB)
Accessories: Headphone Stand (model ST300), Carrying Bag