Refined Fostex proprietary Regular Phase (RP) diaphragm driver using copper foil etched polyimide film and powerful neodymium magnet;Maximum input level of 3000mW to comply with various professional uses;Semi-open for flat and clear sound;Low repulsion ear pad and head pad for maximum comfort;Comes with 3m 1/4-inch plug detachable cable for best serviceability and 1.2m mini plug cable for portable audio use