B-Stock: Fostex TH616 Premium Limited Edition Headphones

The Fostex TH616 is a limited-edition headphone created to celebrate Fostex’s 50th anniversary. Hand-assembled in Japan, it features a unique open-back housing crafted from solid black walnut, carved in a design inspired by the luminous glow of sunlight filtering through trees. Each pair showcases its own natural wood grain, making every unit one-of-a-kind.

Equipped with a 50mm dynamic driver featuring a 1 Tesla magnetic circuit and Fostex’s proprietary BioDyna diaphragm made from ultra-fine bio-cellulose fibers, the TH616 achieves rich bass, detailed mids, and beautifully extended highs with high resolution and low distortion. The open-aperture design not only provides a natural and spacious sound but also minimizes resonance by using apertures of varying sizes, reducing unwanted vibrations.

Lightweight aluminum mechanical parts and high-density resin baffles enhance durability while suppressing resonance for clean audio reproduction. The detachable 3m HiFC pure copper cable with rhodium-plated connectors ensures high conductivity and reliable performance, while the soft artificial leather pads with low-resilience cushions offer long-lasting comfort and effective sound insulation.

Winner of the Gold Award at the VGP 2024 Winter Awards in Japan, the TH616 is a rare fusion of Japanese craftsmanship, premium materials, and world-class acoustic design.

B-stock may have minor cosmetic scratches or dents and furthermore B-Stock is not covered by full manufacturer warranty.  Please call for details.

Product Specifications:

Type: Open-back, dynamic

Driver: 50 mm neodymium magnet with BioDyna diaphragm

Impedance: 25 Ω

Sensitivity: 96 dB/mW

Maximum Input: 1,800 mW

Frequency Response: 5 Hz – 45,000 Hz

Weight: Approx. 370 g (without cable)

Cable: 3 m Y-type HiFC pure copper, detachable 2-pin rhodium-plated connector

Plug: 6.3 mm gold-plated stereo standard plug

Accessories: Leather pouch, instruction manual, warranty card