Immerse Yourself in Audiophile Sound with the Sennheiser HD 660 S2 Headphones Experience the next generation of legendary audiophile sound with the Sennheiser HD 660 S2 open-back headphones.Building upon the acclaimed legacy of the HD 650 series, the HD 660 S2 delivers an even more refined and immersive listening experience, perfect for discerning audiophiles and music lovers alike.Unveiling a New Dimension of Detail and Clarity:Prepare to rediscover your favorite tracks with the HD 660 S2´s enhanced transducer technology.A new voice coil design and lighter diaphragm deliver improved impulse response, resulting in breathtaking clarity and detail across the entire frequency spectrum.Experience the nuances of your music like never before, from the subtlest whispers to the most powerful crescendos.Crafted for Comfort and Durability:The HD 660 S2 headphones are engineered for long listening sessions and lasting enjoyment.The open-back design provides a natural and spacious soundstage while ensuring optimal ventilation for comfortable wear.High-quality materials and robust construction guarantee exceptional durability, making these headphones a worthwhile investment for any audio enthusiast.Features:- Open-back design:Creates a wide and natural soundstage for an immersive listening experience.- Improved transducer technology:Delivers enhanced detail retrieval and clarity across all frequencies.- Lightweight diaphragm:Enables faster impulse response for a more dynamic and engaging sound.- Comfortable fit:Velour earpads and adjustable headband provide lasting comfort for extended listening.- Durable construction:High-quality materials ensure long-lasting performance.Technical.Specifications:- Impedance:300 ohms.- Frequency response:8 Hz.- 41.500 Hz.- Sound pressure level (SPL):104 dB.- THD (total harmonic distortion):< 0.04%.- Connector:6.35 mm stereo jack & 4.4 mm Pentaconn balanced jack.- Cable length:3 m.- Weight:260 g With Cable:Yes.