Sennheiser HD660S2 Open-Back Headphones Headphones 78mm 2-pin Hardware Aluminum termination

78mm 2-pin Hardware Aluminum termination housings Designed in Portland

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Proprietary multi-feedback and dual feed-forward error-correction topology using 250W lateral structure high-power MOSFETs

Sennheiser HD660S2 Open-Back Headphones Headphones 78mm 2-pin Hardware Aluminum terminationThe latest evolution of Sennheiser's legendary HD 600 series, the HD 660S2 delivers a tuning refinement over its predecessor with more extended bass and a smoother overall response, while preserving every bit of the midrange magic that made the series famous. Type and Technology Over ear, open back, dynamic. 38mm transducer with Sennheiser's precision engineered aluminum voice coil. Handcrafted in Ireland. Sound Character Warm, refined, and