Sennheiser HD 660S2

DIVE DEEPER INTO YOUR MUSIC

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, our engineers doubled the sound pressure at the lowest octaves. You can feel the lowest note on the piano (27.5 Hz) or the kick of the bass drum (45-60 Hz) as if you were there.

The relaxed tone and open-back design make this extremely comfortable headphone great for long sessions. With warm tuning, smooth treble, and strong bass, the standard-setter for extended listening is now the standard-setter for extended bass as well.

SUB BASS EXPANDS THE ENTIRE SOUND

In doubling the sound pressure at the lowest frequencies, we’ve retained extraordinary precision and balance throughout the sub-bass, mid-bass, and beyond. Extension on the low-end changes everything by creating more space for the sound. Against a deeper backdrop, highs feel more brilliant, the soundstage deeper, and emotions stronger.

IMPROVEMENT OF A LEGEND

The revised coil of the HD 660S2 matches the 300Ω impedance of the legendary HD 600 and HD 650. This new coil also provides higher magnetic force and electrical dampening for cleaner impulse response.

The surround is also more compliant, dropping the resonant frequency from 110 Hz to 70Hz. All together, these measurements result in even greater precision, speed, and resolution with double the sound pressure at the lowest frequencies.