Sennheiser HD-26 Pro - headphone for professional monitoring, ActiveGard (on/off swittch), closed back, on-ear-design, impedance 100 ohms, frequency response: 20 - 18000 Hz, pressure level 105 dB, power handling capacity 200 mW, 1,5 m cable with 3,5 mm plug, incl. 6,3 mm adapter, weight: 180 g