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94% would recommend to a friend 
Sennheiser HD 660S Headphones
01 / 07
Sennheiser HD 660S Headphones
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Product Description
An audiophile standard in the world of open-back headphones, the HD 660S from Sennheiser all but eliminates the barriers between listener and music. Improving on the acclaimed HD 600 and HD 650 models with an all-new transducer and specially ventilated drive unit to consistently control air displacement, the HD 660S takes a step forward in both detail and dynamics Read More
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Customer Reviews
4.6
(18 reviews)
5star(13)
4star(3)
3star(2)
2star(0)
1star(0)
By Feature
Build Quality
5.0
(2)
Sound
4.0
(2)
Comfort
5.0
(2)
Music GenresPopular among reviewers
ActivitiesPopular among reviewers
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keyboard_arrow_downdm94aq7
0
Jul 17, 2024
checkVerified Buyer
Surprisingly closed open back headphones
These sound objectively better than the 6xx, but.
These do not sound like $300+ headphones. They should be priced < $200 like other entry level Sennheisers.
These definitely aren't flagship headphones.
Everything else is Sennheiser standard: Stellar build quality and perfect comfort.
Recommends this product? No
l_SilentPoet_l
3
Oct 31, 2023
Activities:Casual Listening, Critical Listening, Gaming, Movies & TV
Music Genres:Classical, Electronic, Hip-hop, Jazz, R&B
checkVerified Buyer
Need to be in your arsenal.
These are my first pair of headphones getting into the Audiophile hobby. It's been a year now that I have had them. Where do I start.
First all. These are definitely my go to reference headphones. Very neutral sound. Clean bass. Clarity towards the top but not too bright. Mids are not pushed forward.
I have gotten a pair of Beyerdynamics and a pair of Hifiman Planars in my headphone rotation. The Sennheiser HD660S always seem to surprise me even after a year. I got into tube amps as well and been a blissful journey so far.
In summary, I would definitely recommend these if you are looking for quality sound. The only con is the bass can have a little bit more punch but a little EQ can fix that.
Recommends this product? Yes
grodz
0
Jan 3, 2023
checkVerified Buyer
Better than pricier cans.
These will cost you less than for example a neumann nd20 for just as good a performance.
Recommends this product? Yes
OTC1001C
2
Dec 7, 2022
checkVerified Buyer
Spectacular for the price and paires perfectly with ES100
These are a nice upgrade to the previous lined of Sennheisers, superb detail and clarity. Works as a perfect match with ES100. Listening to various genres works great with rock and pop and jazz. Very comfortable as well.
Recommends this product? Yes
abokaky
0
Nov 14, 2022
checkVerified Buyer
waiting to arrive
I am new to the world of professional headphones, and there are people who advised me to buy the HD58X, and there are those who advised me to buy 660s, so I decided to buy this if its price was 329 and I am waiting for it to reach of Saudi Arabia 🔥
Recommends this product? Yes
Gurbakhshish
214
Oct 16, 2022
checkVerified Buyer
Really, reallllyyyy good
I have both HD58x and these. There is definitely an audible difference there. I have been daily driving these in my office setup with Dekoni pads. If you have to pick one headphone while stuck on an island, ill take these
Recommends this product? Yes
akuei1976
20
Jul 5, 2022
checkVerified Buyer
Simply classic
Nice build, balance sound, great vocal
Recommends this product? Yes
OOAOOOO
3
Jul 1, 2022
checkVerified Buyer
It’s all about preferences.
Some say that amongst the HD600, the HD650 and the 660s, the differences are mostly of their tonality.
Totally agree. As a person who’s tried all three of them, I find the 660s more enjoyable to me. It’s got slightly more bass than the 600 and the 650, with a dimmer treble response also.
I still strongly recommend that you go try them in person before you buy these headphones. They’re all nice headphones, and with similar prices (at the time I purchased the 660s it was like $400), you gotta let your ears tell you the story.
Recommends this product? Yes
Hammer93X
1
Mar 21, 2022
checkVerified Buyer
Awsome Headphones
Great headphones. My favorite so far.
Recommends this product? Yes
wallawalla
21
Oct 30, 2021
checkVerified Buyer
My new workhorse
In terms of sound, the HD660s offers me the same sound signature that I've missed from my sold HD600 but with a little more bass. The imaging is also excellent.
As for comfort, these headphone are incredibly light BUT the clamping force is immense if you have a big head. But after using a yoga block to stretch them for a couple of nights, they are much more comfortable.
Recommends this product? Yes
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