Fostex TH808 Open-Back Walnut BioDyna Headphones

TH808 Open-Back Walnut BioDyna Headphones — Japanese BioDyna Craft in Solid Black Walnut

The TH808 is an open-back premium headphone assembled one at a time in Japan. It combines Fostex’s 50 mm BioDyna driver and 1.5-tesla magnetic circuit with housings machined from solid black walnut and a dedicated acoustic tuning derived from the TH909 platform.

The BioDyna diaphragm balances low mass, stiffness and internal damping for fast response across a wide bandwidth. Machined aluminium openings and the naturally variable walnut housings give the TH808 both its open spatial character and its individual appearance.

Every Detail Matters

• 50 mm BioDyna driver with 1.5-tesla magnetic circuit
• Open-back housings machined from solid black walnut
• Low-rebound synthetic-leather ear pads
• Detachable rhodium-plated two-pin cable system

Key Specifications

• Type: Open-back dynamic
• Driver: 50 mm neodymium / BioDyna diaphragm
• Impedance: 25 Ω
• Sensitivity: 100 dB/mW
• Maximum input: 1,800 mW
• Frequency response: 5 Hz–45 kHz
• Weight: Approximately 400 g, excluding cable

System Pairing

These are revealing full-size headphones. A capable headphone amplifier will provide the current reserve, control and low noise needed to hear their full dynamic range. Contact PPA if you would like help matching them to your source or amplifier.

What’s in the Box

• TH808 headphones
• 3 m detachable OFC cable
• Synthetic-leather pouch
• Manufacturer documentation

Authorized Canadian Fostex Dealer
Princess Pasta Audio supplies genuine Canadian-market Fostex products with authorized dealer support. Available on order; ships within 10 business days.