Sennheiser HD 560S, Over-Ear Headphones, Circumaural, Open, Frequency range: 6 - 38,000 Hz, Maximum level: 110 dB SPL (1 kHz, 1V), Impedance: 120 Ohm, Total harmonic distortion at 1 kHz: <0.5%, Velours ear pads, One-sided, detachable 3 m cable with 6.3 mm jack plug, Weight: 240 g