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| Tenure | Interest% | Installment | Interest |
| 3 | 14% | ₹ 13,642 | ₹ 937 |
| 6 | 14% | ₹ 6,940 | ₹ 1,649 |
| 9 | 14% | ₹ 4,707 | ₹ 2,369 |
| 12 | 14% | ₹ 3,591 | ₹ 3,097 |
| 18 | 14% | ₹ 2,476 | ₹ 4,578 |
| 24 | 14% | ₹ 1,920 | ₹ 6,091 |
| Tenure | Interest% | Installment | Interest |
| 3 | 13% | ₹ 13,620 | ₹ 870 |
| 6 | 13% | ₹ 6,920 | ₹ 1,530 |
| 9 | 14% | ₹ 4,707 | ₹ 2,369 |
| 12 | 14% | ₹ 3,591 | ₹ 3,097 |
| 18 | 15% | ₹ 2,495 | ₹ 4,916 |
| 24 | 15% | ₹ 1,939 | ₹ 6,546 |
| Tenure | Interest% | Installment | Interest |
| 3 | 13% | ₹ 13,620 | ₹ 870 |
| 6 | 13% | ₹ 6,920 | ₹ 1,530 |
| 9 | 13% | ₹ 4,687 | ₹ 2,197 |
| 12 | 13% | ₹ 3,572 | ₹ 2,872 |
| 18 | 15% | ₹ 2,495 | ₹ 4,916 |
| 24 | 15% | ₹ 1,939 | ₹ 6,546 |
| Tenure | Interest% | Installment | Interest |
| 3 | 13% | ₹ 13,620 | ₹ 870 |
| 6 | 13% | ₹ 6,920 | ₹ 1,530 |
| 9 | 15% | ₹ 4,726 | ₹ 2,541 |
| 12 | 15% | ₹ 3,609 | ₹ 3,323 |
| 18 | 15% | ₹ 2,495 | ₹ 4,916 |
| 24 | 15% | ₹ 1,939 | ₹ 6,546 |
| Tenure | Interest% | Installment | Interest |
| 3 | 15% | ₹ 13,665 | ₹ 1,004 |
| 6 | 15% | ₹ 6,960 | ₹ 1,768 |
| 9 | 15% | ₹ 4,726 | ₹ 2,541 |
| 12 | 15% | ₹ 3,609 | ₹ 3,323 |
| 18 | 15% | ₹ 2,495 | ₹ 4,916 |
| 24 | 15% | ₹ 1,939 | ₹ 6,546 |
| Tenure | Interest% | Installment | Interest |
| 3 | 12.50% | ₹ 13,609 | ₹ 836 |
| 6 | 12.50% | ₹ 6,910 | ₹ 1,471 |
| 9 | 13.50% | ₹ 4,697 | ₹ 2,283 |
| 12 | 13.50% | ₹ 3,581 | ₹ 2,984 |
| 18 | 13.50% | ₹ 2,467 | ₹ 4,409 |
| Tenure | Interest% | Installment | Interest |
| 3 | 12.99% | ₹ 13,620 | ₹ 869 |
| 6 | 13.99% | ₹ 6,940 | ₹ 1,648 |
| 9 | 13.99% | ₹ 4,706 | ₹ 2,367 |
| 12 | 13.99% | ₹ 3,590 | ₹ 3,095 |
| 18 | 14.99% | ₹ 2,495 | ₹ 4,912 |
| 24 | 14.99% | ₹ 1,939 | ₹ 6,541 |
| Tenure | Interest% | Installment | Interest |
| 3 | 13% | ₹ 13,620 | ₹ 870 |
| 6 | 13% | ₹ 6,920 | ₹ 1,530 |
| 9 | 13% | ₹ 4,687 | ₹ 2,197 |
| 12 | 12% | ₹ 3,553 | ₹ 2,647 |
| 18 | 12% | ₹ 2,439 | ₹ 3,906 |
| 24 | 12% | ₹ 1,882 | ₹ 5,189 |
| Tenure | Interest% | Installment | Interest |
| 3 | 12% | ₹ 13,597 | ₹ 802 |
| 6 | 12% | ₹ 6,900 | ₹ 1,411 |
| 9 | 14% | ₹ 4,707 | ₹ 2,369 |
| 12 | 14% | ₹ 3,591 | ₹ 3,097 |
| 18 | 15% | ₹ 2,495 | ₹ 4,916 |
| 24 | 15% | ₹ 1,939 | ₹ 6,546 |
| Tenure | Interest% | Installment | Interest |
| 3 | 13% | ₹ 13,620 | ₹ 870 |
| 6 | 14% | ₹ 6,940 | ₹ 1,649 |
| 9 | 15% | ₹ 4,726 | ₹ 2,541 |
| 12 | 15% | ₹ 3,609 | ₹ 3,323 |
| 18 | 15% | ₹ 2,495 | ₹ 4,916 |
| 24 | 15% | ₹ 1,939 | ₹ 6,546 |
| Tenure | Interest% | Installment | Interest |
| 3 | 14% | ₹ 13,642 | ₹ 937 |
| 6 | 14% | ₹ 6,940 | ₹ 1,649 |
| 9 | 14% | ₹ 4,707 | ₹ 2,369 |
| 12 | 14% | ₹ 3,591 | ₹ 3,097 |
| Tenure | Interest% | Installment | Interest |
| 3 | 13% | ₹ 13,620 | ₹ 870 |
| 6 | 13% | ₹ 6,920 | ₹ 1,530 |
| 9 | 14% | ₹ 4,707 | ₹ 2,369 |
| 12 | 14% | ₹ 3,591 | ₹ 3,097 |
| Tenure | Interest% | Installment | Interest |
| 3 | 13% | ₹ 13,620 | ₹ 870 |
| 6 | 13% | ₹ 6,920 | ₹ 1,530 |
| 9 | 14% | ₹ 4,707 | ₹ 2,369 |
| 12 | 14% | ₹ 3,591 | ₹ 3,097 |
| 18 | 15% | ₹ 2,495 | ₹ 4,916 |
| 24 | 15% | ₹ 1,939 | ₹ 6,546 |
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Designed in
Germany
Balanced Sound
Signature
2 Years of
Warranty
Ideal for
Audiophiles
Ideal for
Movies and TV
Open-Back
Design
Dynamic
Drivers
Needs
Amplification
Replaceable
Cables
The Sennheiser HD 660S has an eye catching new matte black and anthracite design. It looks classically elegant with some hints of contemporary influence. It is truly a symbol of sophistication.
With High Quality Sound, the HD 660S also gives you High Comfort. In spite of its strong build, this pair is very lightweight. The elliptical ear cups are shaped according to the anatomy of the ear and sit perfectly over your ears giving you superior comfort. With comfortable earpads and its open construction, you can listen to music on these for hours on the trot.
The HD 660S has exceeded its predecessor HD 650 in terms of the sound output. With a crisp and defined bass, clear mids and pleasantly natural treble, it offers an exceptional soundstage response. You hear every detail and expression of the songs you play that takes you on a completely different journey full of emotions altogether.
Built with the new Transducer Design, The HD 660S offers a much better performance as compared to the HD 650. It is engineered with a specially manufactured stainless steel fabric attached to the diaphragm that facilitates better control of the diaphragm movements. Moreover, extremely light aluminum voice coils ensure the highest impulse fidelity. The transducers are carefully selected and paired by hand to ensure consistently narrow (±1 dB) tolerances.
The HD 660S is much more versatile as it can deliver reference-class sound when connected to hi-res mobile players even with its lower impedance.
| TRANDUCER PRINCIPLE | Dynamic, open |
| IMPEDANCE | 150 Ω |
| SENSITIVITY | 104 dB |
| THD | < 0,04% |
| FREQUENCY RESPONSE | 9 – 41,000 Hz |
| CONTACT PRESSURE | 6.0 N ± 1 N |
| WIRED CONNECTIVITY | 3.5mm Input |
| CONNECTOR | 6.35 mm / 4.4 mm Pentaconn |
| MICROPHONE | No |
| COMPATIBILITY | Universal |
| WEARING STYLE | Over-Ear (Circumaural) |
| COLOR | matte black |
| CABLE LENGTH | 3m |
| WEIGHT | 260 g |
| BOX CONTENTS | 1. Sennheiser HD 660s Headphones |
| 2. 1 x 1/4" (6.35mm) Stereo Jack Plug | |
| 3. 1 x 4.4mm Pentaconn Stereo Jack | |
| 4. 1 x 1/4" (6.35mm to 3.5mm) Jack Adapter | |
| 5. Storage Box | |
| 6. Instruction Manual |
Sennheiser - HD 660 S
₹ 39,990/- |
Shure - SRH 1840
₹ 41,999/- ₹ 47,500/- |
Beyerdynamic - DT 1990 PRO
₹ 47,990/- ₹ 59,389/- |
iBasso - SR2
₹ 39,999/- |
|
| Warranty |  |
|
|
 |
| Sound Signature |
 Balanced |
Balanced |
 Flat |
Balanced |
| Design | Open Back | Open Back | Open Back | Open Back |
| Wearing Style | Over-Ear | Over-Ear | Over-Ear | Over-Ear |
| Frequency Response | 10Hz-41kHz | 10Hz-30kHz | 5Hz-40kHz | 3Hz-40kHz |
| Cable | 3m straight cable | 2m straight cable | 3m straight cable | 1.8m straight cable |
| Replaceable Parts |  |
|
|
|
| Impedance | 150Ω | 65Ω | 250Ω | 24Ω |
| Best for | Studio Monitoring/Casual Listening | Studio Monitoring/Casual Listening | Audiophiles | Casual Listening |
| In The Box | 1x Sennheiser HD 660s Headphones 1x 1/4" (6.35mm) Stereo Jack Plug 1x 4.4mm Pentaconn Stereo Jack 1x 1/4" (6.35mm To 3.5mm) Jack Adapter 1x Storage Box |
1x SRH1840 Headphones 1x Two Detachable Cables 1x Replacement Velour Ear Pads 1x Threaded 1/4" Gold-Plated Adapter 1x Hard Zippered Case |
Beyerdynamic - DT 1990 PRO Headphones Two Pairs Of Velour Ear Pads Two Pairs Of Cables(3 M Straight And Coiled Cable) Premium Hard Case |
IBasso - SR2 Headphones Jack 3.5mm Cable Jack 3.5mm To Jack 6.35mm Cable Earpads Carrying Case |
| Experts Verdict |
"Sennheiser has created an entirely new transducer for the HD 660 S, which is said to have lower harmonic distortion and produce an even more natural, uncolored sound." The Verge |
"Shure has a winner on its hands; we can’t praise the 1840s enough. This is a wonderfully musical pair of headphones that comfortably justify their price." What Hi-Fi |
"Beyerdynamic’s implementation of their Tesla design also shows technical prowess. The DT1990 PRO kick fast, woo with speed and attack and top it off with great separation and fine details." Headfonics |
 |
Don't sweat it, this Sennheiser HD 660 S comes with a 2 year warranty from Sennheiser that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.
Read more about Sennheiser's warranty in India.
"According to Sennheiser the new HD660 S features a new transducer design, resulting in improved control of the diaphragm movements thanks to specially manufactured precision stainless steel fabric."
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"Were it any other maker producing the HD 660 S I would have been quite impressed with how close they managed to get to the sound of the legendary HD 600/650."
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"The Sennheiser HD 660 S are high-end open-back headphones.These are the kind you might use to listen to music at home, or to watch a movie late at night when you don’t want to disturb anyone else."
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"Sennheiser has created an entirely new transducer for the HD 660 S, which is said to have lower harmonic distortion and produce an even more natural, uncolored sound."
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"The HD 660 S is usable with portable devices, but to hear this headphone at its best use it at home or with high-quality portable players."
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"With 150-ohm impedance, the HD 660 S are also determined to be just as easily used with smartphones and portable music players as with hi-fi components."
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"Offering a lower impedance of 150 ohms, the HD 660 S can be enjoyed with HiRes mobile players or when directly connected to high-quality, stationary HiFi components."
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"The Sennheiser HD 660 S are good open-back critical listening headphones. They have a good audio reproduction and are comfortable enough for long listening sessions."
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"As we feel that most people will find HD660S the more versatile, better sounding headphone than either of its beloved predecessors. The sonic performances of HD660S are quite impressive"
Read MoreWatch the most popular YouTube reviews for the Sennheiser - HD 660 S
Once again thanks to Headphone Zone. Loving this very much. More clarity after 6 months. Great Head Phones SENHEISER. What a natural Sound. If you got a proper DAC & AMP it will be more fun with natural instrumental sounds and thumpy Bass (not much but enjoyable). Worth the Headphones.
I reviewing this once again after unboxing. Really a good package, for this thanks to Headphone Zone for a good package and very fast delivery. I am not a audiophile, but these headphones are rocking. Without DAC/amp its sounds good when connected to my TV & PC. With mobile it's really needs a DAC/Amp. Waiting for my XD-05, after that I will mesmerize with these headphones. Without thinking go for these. These are good Headphones. And Headphone Zone, you are awesome. Go Ahead
Hey Syed, we're so glad to know that you loved the product. Thank you so much for the detailed review this will surely be a great help for the others!
These headphones from Sennheiser are totally worth the asking price. Vocal and Imaging kings. If you are looking for a lot of bass, I think you should look at the DT 1770 PRO probably. But for vocal focused music there's nothing that comes close in this price range.
These can be run from a good laptop and even a good high end phone in my opinion. They reach a suitable volume at 80% on my Samsung S10+. But I am sure that a good DAC/AMP will increase the capability of these headphones. An amp might even increase the bass response of these headphones. I didnt take them off on the first 4 days after I got them!!!
Straight fire headphones for Rock and Pop
Oh, thanks Headphone zone, just received my order within 2 days, I am in journey excited to see the product, after unboxing I update my review. Waiting for my Headphone ampp xd-05 now. Great delivery thank u so much. Giving stars without seeing the package. Call received that my package arrived at home.
Hey Syed, we hope that you will love the product even more and we know you will for sure!
Well, i have so many things to say about the HD660s. It has an immersive sound experience where it is also easy to drive. The inclusion of a 4.4mm balanced cable is a icing on the cake in the package. The sound has a deep quick bass, lush vocals with beautiful natural tonality, and brilliant staging too. Previously I had owned hd6xx and was not satisfied with its veiled dark signature. Believe me as a user of both, the HD660s is a brilliant pair and will satisfy your needs easily.
Sennheiser - HD 660 S
Sennheiser - HD 660 S
In short, these are amazing Open Back Headphones that blew my mind when I purchased them long back. It was my second open back headhone after a Grado that I purchased long back in 2010.
Open back headphones may not be the best for daily usage and you need to be a quiet environment to really enjoy so I did not plan to buy anymore but after a friend gave me a demo of these headphones in his house, I took the plunge to buy them. I purchased them pre-pandemic and in a way, I managed to get most of them as its an ideal headphone for home usage and long hours without any strain.
These headphones sound amazing in every Genre of music you throw and its will not disappoint you come what may. This is the headphone that I can assure will make your listening experience shift to a new dimension. The immersion you get with these headphones will just keep you hooked to these pair of cans.
The sound signature that you get can be what is slightly on the darker side and may not sound as bright as many headphones but in no ways it causes any issues as with some time, you find a charm in the sound signature.
The only issue that I can indicate is that you need a proper Amplifier to really get the best of these headphones. Plug it to your phone or laptop, you will still enjoy it 95% but to get the best, a good amplifier is needed. I use with a DAC/AMP combo and once you give it the power, these will just blow you away.
If can afford just one good pair of headphones, then buy these and its hard to go wrong with these
We are incredibly grateful that you took the time out to leave us this detailed review!
Delivery: Amazing, got the package 1 day before.
Headphone Packaging: The HD 660 S comes in a premium box.
Headphone Sound: 10/10 Would recommend for gaming, songs, movies, etc... pretty much anything. For serious gamers, the only tweak I would suggest is to tune the EQ to reduce the lower frequencies <30 to 500 Hz> by a couple of points and leave the rest of the mid and upper frequencies as it is.
Only Con: This is rather a minor nitpick. The clamping force is slightly on the higher side, but it gets reduced over time.
Hey Mohit, we are pleased to see your positive feedback! thanks for sharing this honest and detailed feedback with us.
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