Sennheiser HD 660S2 Open Back Headphones

Enjoy your music on a completely new level. An intimate, relaxed sound signature combines with outstanding precision and exceptional comfort — and now, extended sub bass — for a deeply moving experience.

- Uniquely powerful vented magnet system for minimized distortion
- Ultra-light aluminum voice coil with 300-ohm impedance for excellent impulse response
- Intimate sound with great timbre and deep, accurate sub bass
- Plush ear cushions and open design for maximum comfort