Dive Deeper Into Legendary Sound
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. The extremely precise yet non-fatiguing sound of the HD 660S2 delivers even more impact with extended sub-bass. With an optimized surround, transducer airflow, and coil Sennheiser's engineers doubled the sound pressure at the lowest octaves. You can feel the lowest note on the piano or the kick of the bass drum as if you were there. The relaxed tone and open-back design make these extremely comfortable headphones great for long sessions. With warm tuning, smooth treble, and strong bass, the standard setter for extended listening is now the standard setter extended bass as well.
Uniquely powerful vented magnet system for minimized distortion
Intimate sound with great timbre and deep, accurate sub bass
Ultra-light aluminum voice coil with 300-ohm impedance for excellent impulse response
Plush ear cushions and open design for maximum comfort
This warm, inviting signature combined with extended sub-bass makes listening uniquely pleasant and rewarding. And with comfort this good, it practically begs you to keep going for endless sessions. That’s how HD 660S2 combines the best of many worlds to give you an intimate experience you won’t want to live without.
The low total weight and ergonomic headband rule out any potential discomfort on top of your head as well. Combined with excellent build quality, you’ll quickly grow attached to a listening experience that’s as physically pleasing as the warm, non-fatiguing sound at its heart.