Sennheiser HD 660S2

Sennheiser HD 660S2

Take your music experience to the next level. An intimate, relaxed soundstage combined with unprecedented accuracy and premium comfort - and now extended sub-bass - for a moving experience.

The headphones you can't live without

Have you ever gotten goosebumps from sound so lifelike, it was as if the source of the sound was in the room with you? The HD 660S2 gives people who love music an intimate way to experience their favorite songs and artists on a deeper level. The breathtaking resolution and accuracy bring you closer to the instrumentalists and vocalists than ever before. And yet the sound remains natural and balanced, not shrill or overdone.

This warm signature sound combined with the extended sub-bass makes for a unique, enjoyable and inviting listening experience. And with such a comfortable fit, you'll soon be enticed into hours of listening sessions. Thus, the HD 660S2 combines the best of multiple worlds to give you an intimate experience you can't live without.

Sub-bass for a wider sound

Normally audiophiles don't exactly get hot on sub-bass. That's because it quickly sounds cluttered or overdone and actually distracts the listener. That's a shame, because sub-bass has so much more to offer than just the rousing sound of a bass drum. After all, did you know that a low B note of a five-string bass guitar vibrates at 30.9 Hz? Or that the lowest note of a concert piano has a frequency of 27.5 Hz? But an extended sub-bass also makes genres that bet heavily on the bass sound fantastic.

And that's the magic trick. By doubling the sound pressure at the lowest frequency, Sennheiser has still managed to achieve unprecedented accuracy and balance in the sub-bass, mid-bass and above. Most impressive, however, is its impact on the listening experience. The extra pressure at bass creates more space for the sound and that makes a world of difference. With this deeper reproduction, treble sounds sharper, the soundstage deeper, the emotions stronger.

They feel as good as they sound

The low overall weight and ergonomic headband prevent a potentially uncomfortable feeling on your head. Combined with a strong sample of Irish build quality, you'll soon be wedded to these headphones, whose excellent fit is matched only by the warm, relaxing sound.

How do you surpass legends?

Ever since the HD 580, Sennheiser's high-quality headphones have been an inspiration with their balanced, natural sound reproduction. The HD 600, HD 650 and HD 660S are known as the standard for neutral, premium sound reproduction, and under the hood and in terms of looks, the HD 660S2 builds on its predecessors. For example, the S2's redesigned coil now has the same 300-ohm impedance as the legendary HD 600 and HD 650. This new coil also offers more powerful magnetic strength and electrical damping for a more pure impulse response.

The surround sound has been improved with a lower resonant frequency of 70 Hz. Much effort has also gone into optimizing the airflow around the transducer. Because the air gap at the magnet works more efficiently, sensitivity has been increased within the frequency spectrum. These improvements have resulted in greater accuracy, speed and resolution, with double the sound pressure at the lowest frequency.