2 Years of
The Sennheiser HD 660 S follows suit with the legendary HD 600 and HD 650 headphones when it comes to audio quality. If you're looking for headphones to explore your Hi-Res music collection then you'll be floored by the detailed sound produced by these stunning headphones.
SENNHEISER PRESENTS THE ALL-NEW HD 660S AS AN UPGRADE TO THE LEGENDARY HD 650 AND HD 600
Sennheiser has a 75-year history, past achievements, and inventions in the audio industry as a third-generation family-run company, as well as their desire to influence its future. Sennheiser's engineers work diligently to provide some of the most audiophile-focused headphones available. The manufacturing process for headphones like the HD 600, HD 650, HD 800 S, and HD 820, to mention a few, involved extensive research and development. With the same approach, the HD 660S was born. The new, high-end Sennheiser HD 660S headset outperforms the iconic HD 650's excellent performance. Sennheiser is attempting to expand its product line with the HD 660S designed specifically for the most demanding listeners. An eye-catching new matte black and anthracite design is featured on the Sennheiser HD 660S. It has a classically exquisite appearance with some modern influences. It truly represents sophistication. The HD 660S headphones provide an audiophile-grade experience that will take your breath away.
42MM DYNAMIC TRANSDUCERS AND OPEN-BACK DESIGN DELIVER LIQUID-SMOOTH RESPONSE WITH EXCEPTIONAL SOUND STAGE AND IMAGING
The Sennheiser HD 660 S is designed with 42mm transducers that deliver a liquid-smooth response. Even at the extremities of the frequency range, the HD 660S surpasses the best of that illustrious DNA with supernatural speed and seamless instrument reproduction and separation. The HD 660S delivers the revealing details that audiophiles seek without losing the engaging dynamics that make music so delightful, thanks to an entirely redesigned transducer and specially vented drive unit. The Sennheiser HD 660S is here to immerse you in rich, towering waves of sonic impact, thanks to its 42mm transducer arrangement. Its outstanding presentation and elegance deliver incredible tonality, scale, and dynamics. Without the use of boosted bass frequencies designed to colour the timbre, it offers a wider vertical soundstage and real-time timbre performance. The HD 660S has good soundstage and imaging capabilities due to its open-back design. You will be able to imagine and place each instrument considering the stage of your recording. The soundstage and imaging will give you the impression that you are watching a live performance while seated in a concert hall. This single-driver structure encourages accurate sound positioning with transparency, wide soundstage and dynamics.
EXPERIENCE HI-FIDELITY AUDIO WITH AN ALUMINUM VOICE COIL AND THE 38MM DIAPHRAGM COUPLED WITH STEEL MESH
An open-back earcup coupled with a new transducer calibrated for the contemporary audiophile produces quick responsiveness. The 38mm diaphragm maintains its flexibility for ultra-quick impulse Hi-Fidelity across the board thanks to an aluminium voice coil. The power to precisely transmit tone and spatial features is unlocked by the voice coil and 38mm diaphragm. Though fascinating in terms of aesthetics, the HD 660S drive unit's steel mesh excels in terms of performance. It completes the ventilated driver and provides reliable air displacement control to lessen turbulence. Diaphragm travel is therefore unadulterated, allowing the music—and only the music—to shine in the ideal harmony of purity and expression. Since the steel composition permits significantly tighter production tolerances, each HD 660S produced has amazingly consistent properties. The sound coming from each transducer is free to expand when coupled with the open-back ear cups, precisely delivering a holographic and airy reproduction of audio.
HD 660S PACK A PUNCH WITH THEIR CAPABILITY, COMPATIBILITY, DURABILITY, VERSATILITY, AND LUXURIOUS COMFORT
The HD 660S is much more versatile as it can deliver reference-class sound when paired with any device. With its sound pressure level (SPL) at 104 dB, it is easy to drive these headphones. The HD 660S's magnet is more powerful than its predecessors, making it easier to drive. To handle the power levels inherent in output amplification circuits, the engineers at Sennheiser developed the HD 660S for efficiency. At 150 ohms, it is the ideal partner for dedicated amplifiers, A/V receivers, and digital audio players (DAPs). These exceptionally tight tolerances, combined with automated assembly procedures, guarantee that your HD 660S experience will be exceptional. The engineers painstakingly built HD 660 S using lightweight materials invisible to the acoustical engineering without sacrificing the toughness necessary for daily, all-day use. With High-Quality Sound, the HD 660S also gives you High Comfort. Despite its sturdy build, this pair is very lightweight. The elliptical circumaural ear cups fit over your ears which provides superior comfort. You can listen to music on these for hours on end because of the soft earpads and open design.
EASE OF CONNECTIVITY WITH A VERSATILE SET OF ESSENTIAL CABLES
Sennheiser is known for designing some of the most versatile cables that are robust and provide exceptional audio transmission. A beautiful cable with numerous terminations is included with the HD 660 S to accommodate your audio configuration. It has no microphonics and achieves a stable connection. The ¼-inch / 6.3mm stereo connector offers the audiophile-standard plug for connecting to devices such as headphone amplifiers and A/V receivers, digital audio players, analogue gear, and more. A balanced 4.4mm connector provides access to a newer generation of balanced output equipment (headphone amplifiers, digital audio players, etc.) that value the improved stability of this small plug over time. When linked to balanced source/amp circuit outputs, a balanced headphone arrangement gives an even lower noise floor and excellent dynamic range. The result is a broader soundstage, precisely controlled transients, and impossibly distinct instrument separation. Each cable is 9.8 feet / 3m long to accommodate unencumbered listening on gear deep within your shelves or favourite listening chair, and a flexible adapter is included to reduce the 6.3mm to 3.5mm.
Regions of the frequency spectrum
(20Hz - 80 Hz)
(80 Hz - 300 kHz)
(300 Hz - 1000 kHz)
(1 kHz - 6 kHz)
(6 kHz - 10 kHz)
(10 kHz - 20 kHz)
|TRANSDUCER PRINCIPLE||Dynamic, open|
|FREQUENCY RESPONSE||9 – 41,000 Hz|
|CONTACT PRESSURE||6.0 N ± 1 N|
|WIRED CONNECTIVITY||3.5mm Input|
|CONNECTOR||6.35mm / 4.4mm Pentaconn|
|WEARING STYLE||Over-Ear (Circumaural)|
|BOX CONTENTS||1. Sennheiser HD 660s Headphones|
|2. Cable with 6.35 mm plug|
|3. Cable with 4.4 mm Pentaconn plug (balanced)|
|4. Adaptor 6.35 to 3.5 mm,|
|5. Storage Box|
|6. Instruction Manual|
|COUNTRY OF ORIGIN||Romania|
|IMPORTER DETAILS||Importers Name: Sennheiser Electronics India Pvt. Ltd.
Address: 104 A, B, C, First Floor, Time Tower, M.G. Road, Sector-28,Gurugram,Haryana-122002
Contact No: 1800 22 3632
2 Year Warranty
Don't sweat it, this Sennheiser - HD 660 S comes with a 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."Read More
"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."Read More
"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."Read More
"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."Read More
"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."Read More
"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."Read More
"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."Read More
"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."Read More
"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 More
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
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!
I narrowed down to the Sennheiser HD 660S after going through a lot of reviews that included Audio Technica ATH-R70x, Beyerdynamic Amiron Home, DT 1990 Pro, HiFi Man Sundara, Meze Liric (I'm curious about planar magnetic drivers, but some other time). I was looking for an open sound that was neutral but not sterile, warm but not too lush, with detailed mids and smooth highs. I think the 660S checks off all the boxes on that list. I've read that these are not great for bass, but I feel bass is tight and textured and plenty for my music tastes - 70s Rock, Soft Rock, Jazz & Classical. I do all my listening on Tidal (with MQA) through an AudioQuest Cobalt DAC. So how's the sound? In one word - glorious! I'd also like to mention that these are very comfortable. I have been using the Beyerdynamic T51i for many years but the HD 660S, despite their bigger size disappear on my head in a way the on-ear Beyerdynamic doesn't. Excellent service from Headphone Zone - headphones arrived just 2 days after placing the order.
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.
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!
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