Introduction :-

The Sennheiser HD 660 S Wired Over-the-Ear Headphones (Black) are a reference-class masterpiece designed for audiophiles seeking exceptional sound quality. Featuring improved open-back dynamic transducers with low harmonic distortion, these headphones deliver unmatched audio precision. Each pair undergoes meticulous hand-selection to ensure precise left/right channel matching for superior stereo spatial accuracy. With a 150-ohm impedance, they are compatible with both home and portable Hi-Res audio devices. Reinforced para-aramid detachable cables with OFC copper ensure excellent signal integrity and minimal handling noise. The package includes two versatile cables – a 6.35 mm stereo plug and a 4.4 mm Pentaconn balanced stereo plug – along with a 6.35 mm to 3.5 mm adapter for added convenience.