Sennheiser HD660S2 Open-Back Headphones Headphones Two Knowles 32873 drivers manage

Two Knowles 32873 drivers manage the low mid integration

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

point-to-point Ground 1 x 11

designed to extract everything from a reference-grade source while preserving the musicality the brand is known for

single-ended RCA Digital inputs USB

Sennheiser HD660S2 Open-Back Headphones Headphones Two Knowles 32873 drivers manageThe 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