Fostex TH-909 Premium Open Headphones


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This is a flagship model based on the closed type TH900mk2. While keeping the same sound characteristic, we further expanded and increased its sound field by adopting open type and adjusting the acoustic circuit.

    • Unique neodymium magnet drive with 1.5 Tesla magnetic flux density for impressive dynamics
    • Foster / Fostex 'Biodyna membrane for fine-grained high audio resolution and sound reproduction
    • Case made of Japanese ornamental cherry birch with excellent acoustic properties

    • Low-resonance dual-layer metal mesh for open design
    • Traditionally handcrafted 'Urushi' lacquer finish gives TH909 a stunning look
    • Synthetic leather earpads with low resilience urethane padding for unparalleled comfort
    • Removable 7N OFC copper cable (99.99999%) to 6.3mm stereo jack (3m)
    • Robust plug housing made of duralumin
    • Optionally balanced 7N OFC headphone cable to 4-pin XLR (3m)
    • All plugs plated, rhodium-plated connector pins
    • Elegant headphone stand included

    • Driver: Dynamic, 50mm
    • Construction: Open
    • Impedance: 25 ohms
    • Sensitivity: 100db (@ 1kHz, 1mW)
    • Frequency response: 5 Hz - 45 kHz
    • Max. Input power: 1,800mW
    • Weight: 390g (without cable)