Sennheiser - HD 660S2 Open-Back Wired Headphone

Sennheiser brings its engineering legacy to this refined open-back headphone, featuring advanced 38mm drivers with 300Ω impedance, ultra-light aluminium voice coils, and a vented magnet system for deeper bass, cleaner transients, and low distortion. Its warm, balanced sound signature delivers rich mids, smooth treble, and an airy, spacious soundstage ideal for audiophiles, music lovers, and studio work.

Designed for long comfort, it features plush velour pads, a lightweight 260g build, and breathable materials. The dual detachable cables—6.3mm and 4.4mm—plus a 3.5mm adapter offer full connectivity for DACs, amps, and interfaces. Engineered in Germany and made in Ireland, it ensures premium durability and reliable performance.