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Sennheiser HD660S2 Open Back Headphones

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$607.97 $949.95 In stock

Dive deeper into legendary sound.

Nothing makes the music feel dramatic like powerful bass.
The extremely precise yet non-fatiguing sound of the Sennheiser HD 660S2
now delivers even more impact with extended sub-bass.

More impact and emotion
Breathtaking resolution and precision take you closer than ever to instruments and vocalists. Yet the sound is natural and balanced, never harsh or brash.

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.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Julian ★★★★★

The lower bass extension on these really adds weight to rock tracks without muddying the mids. Listening to old favorites feels like hearing them fresh again, and they stay comfortable for hours.

Violet ★★★★★

I’m not usually a bass-head, but the extra punch in the low end here makes my old jazz records feel alive without drowning out the mids. Wearing them for a full work shift is totally comfortable thanks to the plush ear pads.

Brian ★★★★★

The treble stays clean even during long listening sessions, which I appreciate since my ears get tired easily with other headphones. The added bass punch makes orchestral tracks feel properly cinematic without muddying the mids, and it’s exactly the dramatic energy I was hoping for.