Fostex TH909 Headphones - Unboxing

Fostex TH-909 Premium Headphones

In Stock

Fostex TH909 stereo headphones maintain the sound characteristic of the TH900mk2… More details

Fostex TH909 stereo headphones maintain the sound characteristic of the TH900mk2 with the expanded sound field of an open-back design and an adjusted acoustic circuit.

Main Features

The TH909 offers a wider dynamic range and low distortion, utilizing a 1.5 Tesla 50mm driver with repulsion magnets.

The diaphragm is constructed from Biodynina, a material composed of bio-cellulose and inorganic fiber admixture. This diaphragm design accomplishing rich low-end frequencies, natural mid-range, and an especially excellent presence in high-frequency production.

The housing features a double-layer structure composed of etching metal, diversifying the resonance points and presenting a gorgeous appearance. It is finished with a Japan Lacquer in Bordeaux manufactured by the Sakamoto Urushi factory, established 110 years ago.

The TH909 includes a detachable 7N grade (99.999999%) high-purity OFC (Oxygen Free Copper) unbalanced cable (ET-H3.0N7UB) featuring a plug sleeve made of durable duralumin and rhodium-plated connections. Interior wiring is also constructed from 7N grade materials.

The newly-designed earpad uses a low-resilience cushion for a more comfortable fit.

Detachable connection parts use rhodium plating finish offering high hardness and excellent resistance to abrasion and corrosion.

Press and Reviews

Headfonics Review

by Michael
Mar. 2020

Headfonia Review

by Matty Graham
Aug. 2020



Dynamic, 50mm
Operation Type
Open back
25 ohm
100dB/mW (at 1kHz, 1mW)
Freq. response
5Hz – 45kHz
Max Input Power
390g (excluding the cable)
Detachable 3m 1/4” unbalanced stereo phone (model ET-H3.0N7UB)

Included in Package

  • Headphones
  • Detachable cable
  • Headphone Stand (model ST300)
  • Carrying Bag


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