Fostex TH900 MK2 Premium Closed-Back Dynamic Headphones

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TH900 MK2 by Fostex is the second generation of their brilliant TH900, one of the most renowned premium dynamic headphones on the market.

TH900 MK2 features the Fostex Biodyna diaphragm, made by bio-cellulose fibre featuring low specific gravity, high Yang's modulus and high internal loss - all at the same time - achieving twice the high propagation velocity and five times high rigidity against the conventional plastic film based driver unit.

This MK2 version also features detachable connectors for quick & easy replacement or upgrade of the standard unbalanced cable (equivalent to model ET-H3.0N7UB).

An optional balanced cable (model ET-H3.0N7BL, sold separately) has been designed to meet growing demands for balanced connections with various headphone amps which support balanced 4-pin XLR out.


  • Detachable cable with optional 4-pin XLR balanced cable (ET-H3.0N7BL) available for balanced connection.
  • Cable made of 7N grade (99.99999%) OFC with highly durable duralumin plug case, with rhodium-plated 2-pin ear cup connector.
  • Unique neodymium magnetic circuit adopting the magnetic repulsion system.
  • 1.5 tesla (15,000 gauss) magnetic flux density to achieve wider dynamic range.
  • Proprietary Biodyna diaphragm for detailed, high resolution sound reproduction.
  • Traditional Japanese Urushi lacquer finish in Bordeaux on Japanese Cherry Birch Ear pads made from protein leather for maximum comfort.


  • Driver: Dynamic, 50 mm
  • Operation type: Closed
  • Impedance: 25 ohm
  • Sensitivity: 100 dB (at 1 kHz, 1 mW)
  • Frequency Response: 5 Hz – 45 kHz
  • Maximum Input Power: 1,800 mW
  • Weight: 390 g (excluding cable)
  • Cable: Detachable 3 m 1/4-in unbalanced stereo 6.35mm / 1/4-in
  • Available Accessories: Headphone stand, Carrying bag

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Headphone Features

Dynamic Driver Size:
Transducer Type:
Ear Cup:
Closed Back
Black / Red
Headphone Type:
  • HiFi Headphones
  • Over Ear Headphones
Frequency Range:
5 - 45,000
Cable Length (m):


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