Fostex TH610 JPN Closed-Back Walnut BioDyna Headphones

TH610 JPN Closed-Back Walnut BioDyna Headphones — A Japanese-Built Closed Back in Solid Walnut

The TH610 JPN is a limited-production closed-back headphone assembled in Japan. It pairs Fostex’s 50 mm BioDyna driver with solid black-walnut housings for a naturally damped, tactile presentation that sits between studio precision and relaxed long-form listening.

A strong neodymium magnetic circuit drives the low-mass BioDyna diaphragm across a wide 5 Hz–45 kHz range. Detachable two-pin connections support cable service and upgrades, while every natural-wood housing carries its own grain and colour variation.

Every Detail Matters

• 50 mm BioDyna dynamic driver
• Closed-back housings machined from solid black walnut
• Japanese assembly and naturally individual wood grain
• Detachable two-pin cable system

Key Specifications

• Type: Closed-back dynamic
• Driver: 50 mm neodymium / BioDyna diaphragm
• Impedance: 25 Ω
• Frequency response: 5 Hz–45 kHz

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

• TH610 JPN headphones
• Detachable unbalanced 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.