Fostex TH-919 Premium Open Back Headphones

Fostex TH-919 Premium Open Back Headphones.

The Fostex TH919 elevates Fostexs flagship TH900 series into the next generation, pairing traditional Japanese lacquer craftsmanship with advanced BioDyna driver technology. Featuring a newly developed 50 mm BioDyna driver, the TH919 delivers tight, well-defined lows, smooth and transparent mids, and lustrous highs. Its open-back design and exquisitely crafted hard maple housing with lacquer and Kumiko-inspired aluminum mesh create a natural, spacious soundstage with minimal listening fatigue.

Key Features

• New 50 mm BioDyna Driver: Optimized amplitude for precise low-frequency control, natural midrange, and clear, extended highs.

• Lightweight Magnesium Alloy Mechanical Parts: Reduced weight by 20% while minimizing vibration for enhanced comfort.

• Urushi Lacquer Hard Maple Housing with Kumiko-Inspired Mesh: High-density wood and precision two-layer aluminum mesh offer a luxurious aesthetic and natural sound reproduction.

• Redesigned Ear Pads: Dual-layer low-resilience urethane with silk protein synthetic leather for comfort, durability, and optimal fit.

• Flexible Headband and Head Pads: Natural sheepskin material ensures long-term listening comfort.

• High-Purity OFC Cable Included: 2 m unbalanced 2-pole 3.5 mm Y cable; compatible with optional 4.4 mm balanced cable (ET-TH4.4BL2Y).

Specifications

• Type: Open-back dynamic

• Driver: 50 mm neodymium magnet / BioDyna diaphragm

• Impedance: 25

• Sensitivity: 100 dB/mW

• Maximum Input: 1,800 mW

• Frequency Response: 12.5 45,000 Hz

• Weight: Approx. 385 g (excluding cable)

• Cable: 3.5 mm (2-pole) 2 to 6.3 mm (gold-plated 3-pole), 2 m unbalanced cable 1

• Accessories: Leather pouch, safety precautions