Sennheiser HD-650 Stereo Headphones

Features: Top-of-the-range open, dynamic hi-fi stereo headphones Systems with narrow tolerances (± 1 dB), hand-picked in pairs High-quality titanium/silver finish Specially developed acoustic silk for precise, uniform attenuation over the entire area Specially modulated connecting cable (detachable) made from highly conductive OFC copper, Kevlar-reinforced, with very low handling noise, i.e. low structure-borne sound sensitivity Extremely lightweight aluminium voice coils ensure excellent transient response Exceptionally comfortable to wear due to elliptical design adapted to the shape of the ears Can be directly connected to stationary hi-fi components of the highest quality, in particular SACD, DVD-A and CD players Technical Data: Cable length 9.8 ft. (3 m) Contact pressure Approx. 2.5 N Ear coupling Around-the-ear Frequency response (headphones) 10.....39,500 Hz Jack plug 6.3/3.5 mm stereo Nominal impedance 300 Ω Sound pressure level (SPL) 103 dB (1 Vrms) Total harmonic distortion (THD) 0.05 % Transducer principle Open, dynamic Weight w/o cable Approx. 9.2 oz. (260 g)

Original owner. Used about 6 times. Look perfect and sound great. These cans were highly touted in both the Absolute Sound and Stereophile. Comes in original carton, and with adapter plug. I do not charge Paypal fees or shipping. Please ask any questions you have and thanks for looking.