Fostex - TH910 Closed Back Dynamic Headphone Premium headphones that harmonize traditional lacquer craftsmanship and unique acoustic technology at a high level have been completely redesigned and evolved into the next generation. Since its release in 2012, the TH900 series has been Fostex's flagship model, captivating many audio enthusiasts with its unique BioDyna driver's superb sound quality and the unparalleled texture of its beautiful lacquered housing. The TH910 inherits these charms of the TH900 series while completely revamping everything from the driver and housing to the structure, evolving into the next generation. Newly developed 50mm BioDyna driver Adoption of lightweight magnesium alloy mechanical parts Japanese traditional craft “Urushi” lacquer finish hard maple housing Newly shaped ear pads with new materials Flexible fitting head pad and headband Comes with a proprietary high-purity OFC unbalanced 2-pole 3.5 mm Y cable. Type Closed Dynamic Driver Φ50 mm neodymium magnet / BioDyna diaphragm Impedance 25 ohm Sensitivity 100 dB/ mW Maximum input 1,800 mW Frequency Response 12.5 – 45,000 Hz Weight Approx.385 g (excluding cable) Cable Φ3.5 mm(2-pole)x2 to Φ6.3 mm(gold-plated 3-pole) 2 m 7N (99.99999%) grade high-purity OFC unbalanced cable x 1 Accessories Synthetic leather pouch, Safety precautions