Experience high-fidelity listening with the Fostex TH900mk2 Onyx Black, a premium closed-back reference headphone tailored for audiophiles who demand exceptional sound and elegant design. With a stunning Urushi lacquered housing in Japanese cherry birch, proprietary 50mm biodynamic drivers, and 1.5 Tesla magnetic flux, the TH900mk2 delivers a wide dynamic range and remarkable sonic precision.
Designed and manufactured in Japan, this headphone includes detachable connectors for balanced or unbalanced operation and comes with a 7N oxygen-free copper cable, headphone stand, and protective carrying case. The protein leather earpads ensure lasting comfort during extended listening sessions.
Key Features
- 50mm Biodynamic diaphragm for accurate, wide-range sound reproduction 
- 1.5 Tesla magnetic flux (15,000 gauss) for ultra-low distortion and extended dynamics 
- Onyx Black Japanese Urushi lacquered housing on cherry birch wood 
- Detachable connectors support balanced and unbalanced cable options 
- 7N oxygen-free copper cable with gold-plated 1/4" TRS plug 
- Protein leather earpads derived from eggshell membrane for supreme comfort 
- Includes stand and carrying case 
Technical Specifications
- Driver: 50mm dynamic biodynamic driver 
- Frequency Response: 5 Hz – 45 kHz 
- Impedance: 25 Ohms 
- Sensitivity: 100 dB/mW @ 1 kHz 
- Maximum Input Power: 1800 mW 
- Cable: 3 m detachable 7N-OFC, 1/4" TRS plug 
- Weight: 390 g (13.8 oz) 
- Earpads: Protein leather 
- Connector Plating: Gold 
- Open/Closed: Closed-back 
Applications
- High-end home audio systems 
- Audiophile-grade music listening 
- Studio mastering reference 
- Premium headphone amplifier setups 
- Personal high-resolution DAPs 






















