Experience pure perfection! Whether you prefer the holistic approach or like to listen analytically, the K 701 will turn perception into pure enjoyment. Features: Revolutionary flat-wire voice coil technology. Patented AKG Varimotion ultra-precision two-layer diaphragm. Self-adjusting cushioned genuine-leather headband and specially shaped 3D-Form ear pads. Bi-wiring, high-performance cable with 1 4 jack plug. Individually tested and numbered.