Fostex EX-EP-99 are OEM replacement ear pads made exclusively for the TH909 and TH808 — Fostex's flagship open-back dynamic headphones with urushi-lacquered housings and bio-cellulose diaphragms. The pads use high-grade synthetic leather over low-rebound foam, matching the factory specification exactly. At this price and performance tier, fitting non-OEM pads carries a real acoustic risk; EX-EP-99 removes that variable entirely.
Acoustic integrity in an open-back design
Open-back headphones are often assumed to be acoustically indifferent to pad geometry — they are not. The pad profile on the TH909 and TH808 directly affects bass coupling and stereo image coherence at the ear. Low-rebound foam of the correct density maintains even contact between the cup and the head without excessive lateral pressure, which is critical for preserving the tonal balance these drivers were voiced for. Aftermarket pads with different foam density or contact geometry shift this balance in ways that are audible and difficult to quantify without measurement. EX-EP-99 retains the factory mechanical parameters, keeping the driver's frequency response consistent with its published specification.Long-session comfort on reference-grade headphones
The TH909 and TH808 are built for extended critical listening and mastering work. The ear pads need to sustain hours of skin contact without generating pressure points or retaining heat. The high-grade leatherette used in EX-EP-99 is more resistant to abrasion and sweat-induced degradation than generic aftermarket materials. Installation follows the original TH909/TH808 mounting system — no adapters or modifications required.KEY FEATURES
- OEM Fostex replacement — exclusive fit for TH909 and TH808
- High-quality low-rebound foam — precise lateral pressure, no concentrated pressure points
- Premium synthetic leather outer cover — durability and consistent ear coupling
- Preserves factory acoustic characteristic of the dynamic driver
- Direct-fit installation using the original TH909/TH808 cup mounting system
- Sold as a matched pair
TECHNICAL SPECIFICATIONS
- Model: EX-EP-99
- Outer material: High-grade synthetic leather (black)
- Cushion type: Low-rebound foam
- Color: Black
- Compatible models: TH909, TH808
- Package contents: 2 ear pads (one pair)
