SENNHEISER HD 660S2 Wired Audiophile Stereo Headphones

Sennheiser HD 660S2 Wired Audiophile Stereo Headphones Headphone with intimate sound, great timbre, deep sub bass and optimized design, with a design vented magnet system for optimal airflow and minimized distortion. What #39;s inside the box? HD 660S2 headphones 6.3 mm cable (1.8 m), 4.4 mm cable (1.8 m) 6.3mm to 3.5mm adapter Carry pouch Features - Audiophile sound: The natural, relaxed, high-fidelity sound (8 Hz-41500 Hz) offers an intimate listening experience with great timbre and deep, accurate sub bass. - 42mm high-performance transducers: Steel mesh damping follows the drives geometry to control air displacement for precise sound. - Vented magnet system: The magnetic yoke includes milled air vents for optimal ventilation to minimize distortion - Aluminium voice coil: Specially developed ultra-light voice coil with 300-ohm impedance for excellent impulse response - Open-back earcups: open elliptical earcups provide breathability and luxuriously comfortable velour pads provide hours of fatigue-free listening Specifications Transducer principle dynamic, open Transducer size 38 mm Frequency response 8 41,500 Hz Impedance 300 Sound pressure level (SPL) 104 dB (1 kHz, 1 Vrms) Total harmonic distortion (THD) lt;0.04% (1 kHz, 100 dB) Ear coupling Over-Ear Weight 260g Adapter 6.3 mm (14 inch) to 3.5 mm Connector 6.3 mm (14 inch) jack plug, 4.4 mm balanced plug Cable length 1.8m Country of origin Ireland Magnetic field 4.5mT