Model TH900mk2 is the second generation of the TH900, one of the most renowned premium dynamic headphones in the market, which newly features detachable connectors for replace-ment of the standard unbalanced cable (equivalent to model ET-H3.0N7UB).  The optional balanced cable, model ET-H3.0N7BL will also be sold separately to meet growing demands for balanced connection with various headphone amps offering balanced 4-pin XLR out. Unique designed Neodymium magnetic circuit adopting the magnetic repulsion system with 1.5 tesla (15,000 gauss) magnetic flux density to achieve wider dynamic range. The detachable unbalanced cable is made of 7N grade (99.99999%) OFC and highly durable duralumin plug case. Proprietary ''Biodyna'' diaphragm for fine and high resolution sound reproduction. The housings are finished by Japanese traditional ''Urushi'' lacquer by a 110 years old artisan group in ''Bordeaux'' finish on Japanese Cherry Birch. The ear pads are made of protein leather made from eggshell membrane for maximum comfort. Biodyna diaphragm is made by Bio-cellulose fiber featuring low specific gravity, high Yang's modulus and high internal loss at the same time to achieve 2 times high propagation velocity and 5 times high rigidity against the conventional plastic film based driver unit. Driver: Dynamic, 50mm. Operation type: Closed. Impedance: 25 ohm. Sensitivity: 100dB (at 1kHz, 1mW). Frequency Response: 5Hz – 45kHz. Maximum Input Power: 1,800 mW. Weight: 390g (excluding the cable). Cable: Detachable 3m 1/4” unbalanced stereo phone (model ET-H3.0N7UB). Accessories: Headphone stand, Carrying bag