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Very good

Revainrating 4.5 out of 5  
Rating 
4.7
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Details

BrandSennheiser
ColorBlack
Connectivity TechnologyWired 6.35 mm / 4.4 mm Pentaconn
Model NameHD 660 S
Form FactorOver Ear

Description of

Product Description: SENNHEISER HD 660 S - HiRes Audiophile Open Back Headphone

Characteristics:

The SENNHEISER HD 660 S is a top-of-the-line, hi-res audiophile open-back headphone designed to deliver exceptional sound quality. With its reference-class open-back design and new, improved transducers, this headphone offers a remarkable audio experience with low harmonic distortion. The hand-selected transducers ensure precise left/right matching tolerance, resulting in accurate stereo spatial characteristics. The headphone's 150-ohm nominal impedance allows for a direct connection to home and mobile hi-res audio devices, providing a seamless listening experience.

Similar Products:

When it comes to high-quality audio equipment, few can match the performance and reputation of the SENNHEISER HD 660 S. However, if you're looking for alternative options, you may consider exploring other audiophile-grade headphones in the market. These include models from renowned brands such as Audio-Technica, Beyerdynamic, and Audeze. While each brand offers its unique sound signature, the HD 660 S stands out with its exceptional accuracy, spatial presentation, and harmonic distortion reduction.

Problems Solved:

The SENNHEISER HD 660 S addresses the need for audiophiles and music enthusiasts who demand the utmost precision and clarity in their listening experience. With its hand-selected transducers and low harmonic distortion, this headphone ensures an accurate reproduction of sound, allowing users to hear music as intended by the artist. The 150-ohm impedance enables direct connectivity to various hi-res audio devices, eliminating the need for additional amplification or converters.

Important Parameters and Benefits:

The SENNHEISER HD 660 S offers a frequency response range of 10 to 41,000 Hz (±10 dB), allowing users to enjoy a wide range of frequencies with detailed precision. Its para aramid reinforced, detachable cables employ high-conductive OFC copper, ensuring signal integrity and minimizing handling noise. The supplied connection cables, including a 6.35 millimeter stereo plug and a 4.4 millimeter Pentaconn balanced stereo plug, provide versatility in connectivity options. Additionally, the included 6.35 millimeter to 3.5 millimeter adaptor allows compatibility with a wide range of audio devices.

Where Can This Product Be Used?

  • Home Audio Systems
  • Professional Recording Studios
  • Music Production Studios
  • Hi-Res Audio Listening Rooms
  • Audiophile Listening Sessions
  • Podcast Recording and Editing
  • DJ Mixing and Monitoring
  • Film Sound Design and Editing

    • Reference class open back, dynamic headphone employing new and improved transducers delivering low harmonic distortion. Transducers are hand selected for precise (1 dB) left / right matching tolerance insure exceptional accuracy and presentation of stereo spatial characteristics. 150 ohm nominal impedance allows direct connection to home and mobile Hires audio devices. Contact pressure: 6.0 N - 1 N. Para aramid reinforced, detachable cables employ high conductive OFC copper to insure signal integrity with very low handling noise. Supplied with two connection cables: One with a 6.35 millimeter stereo plug, the other a 4.4 millimeter Pentaconn balanced stereo plug. Also included is a 6.35 millimeter to 3.5 millimeter adaptor. Connectivity Technology: Wired 6.35 millimeter / 4.4 millimeter Pentaconn. Frequency response 10 to 41,000 Hz ( 10 dB), Impedance 150 ohm. Note: Kindly refer to the user manual provided as a PDF manual in the product description section.

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    Reviews

    Global ratings 17
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    Type of review

    Revainrating 5 out of 5

    Reliable purchase, guaranteed to be a good purchase.

    These are not the first, my headphones are open, so the comparison will be in the group of open headphones priced from 350 to 500 dollars. About the imaginary stage: the headphones are weak in this, the stage is perceived as smaller than other headphones of this type, all the music is "in the head", there is little air and scale in orchestral compositions. A plus for many will be that outside they give out much less sound than other open-type headphones, with these you can listen to music at…

    Pros
    • Reliable design, excellent ergonomics (you can sit in them at least all day, they don’t press anywhere, sometimes I forget about them), sound is even in frequency response
    Cons
    • For the price, I'd say they don't. If you find fault directly, then you can call it shortcomings: the body is made of plastic and rough, velvet ear pads, but this is taste.

    Revainrating 4 out of 5

    I am satisfied with everything, both price and quality, I advise you to buy.

    Well, the last. Headphones are still "dark". The detail in the upper case is excellent, but the upper case itself is somewhat tidied up. I would like a little more emphasis on it. But in me, apparently, the habit of my old AKG K701 speaks, and if the HD 660S were the same, there would be no need to talk about any neutrality and honesty. Now as for the path and gain. Headphones are serious, so it makes sense to invest in the path. HD 660S drivers are quite capable of showing what is happening…

    Pros
    • Headphones look strict, stylish and expensive. Made excellent. Nothing creaks, does not dangle, they feel securely in the hands. It seems that they can serve for a very, very long time. They disassemble almost completely without tools. Easy to repair and maintain. Spare parts are readily available and are available in a whole bunch of stores. Moreover, these are not Chinese counterparts, but original parts. Very good. They sit perfectly on the head. The range of adjustments is enough, the ear pads are comfortable. Of the shortcomings of ergonomics, only excessive pressure of the rim on the top of the head can be noted. But they say it goes away with time. You just need to wait until the headphones are a little "carried".
    Cons
    • Sound. He's good, but inconsistent. For 8 or even 9 years, I got used to my old AKG K701, which, to be objective, has a rise in the frequency response in the upper mids and the very top itself, due to which their sound delivery can be called emotional and bright. Although, of course, to a large extent not natural. The Sennheiser HD 600S is the complete opposite. I'll start with the pros: 1) The headphones have excellent timbre balance. Instruments, voice, etc. sound very natural. The sound has a physicality that the 701s don't have. Compared to the 660S, the 701s seem to have everything below the middle cut off. There is intelligibility, but there is no that same physicality. 2) They are not demanding to gain. AKG in this regard is much more whimsical. 3) Headphones are extremely detailed and informative. 4) Can play with energy, focus and pressure. 5) Headphones do a great job with such a thing as imaging. You perfectly feel in what place of the stage this or that instrument is located. In games, this works like a compass, you can clearly imagine where exactly they will attack you from now. And now about the cons and features. Scene. It is practically absent, which is why in some compositions, due to a very "warm" middle, it becomes difficult to isolate some details of the phonogram. They are there, but you need to listen to them, because there is not enough air and space between the sounds. Innings. She is dry and neutral. Many tracks from this sound insipid and mean. In addition, the headphones immediately show you which recording is bad and which is good. And now we are not talking about mp3 vs Lossless, in 660S you will immediately hear the difference between these formats. It's about how the record was mixed in the studio. If the sound engineer didn't notice somewhere and forgot to clean up, for example, the bass, it immediately becomes obvious and it becomes hard to listen to poorly produced music. This is both a minus (not all music sounds pleasant), and a plus (you hear what is included in the recording, no more and no less).

    Revainrating 5 out of 5

    Everything in the product suited me, the price is generally perfect.

    The HD 25 and FH3 sound great, but it's hard to compare to the 660s. With the 660s, I understood the term "layered" in the mouths of some audio bloggers. Country of origin - Romania. Arrived sealed. It's definitely worth buying. But focusing on numbers in device parameters is a thankless task. You need a decent source. Everything immediately falls into place. : long 3m balanced cable. I tried to replace it with a short Chinese one, which I bought for hd 25 - I suffer with 3m, especially when…

    Pros
    • 1. Excellent sound. 2. Comfort. 3. Pentacon balanced cable included. (with shorter Chinese speech. M was not close by the sound quality)
    Cons
    • 1. They press at the very beginning of operation. Be patient for a couple of days. 2. No matter how wild it sounds, it is NECESSARY to warm up. Immediately after switching on, I did not understand at all what I gave the money for. Literally in a couple of hours of normal music playback, low frequencies appeared, the dregs on the midrange disappeared, the headphones "sang". Although specialists from a well-known store with the word "head" recommend heating with pink noise for at least 50 hours :) 3. Demanding on the source. I naively thought that Cayin n3 Pro would shake them from the balance hole. How wrong I was! The volume is enough, the sound is kind of wadded. The ifi DAC&CAN Signature kit arrived (stationary DAC and amplifier). Here the ears sounded even without frequency correction in CAN ! True, the DAC had to be reflashed. The entire home collection of headphones instantly settled into place. Marshall Major II (not a fake) retired (handed over to be torn apart by the middle daughter), sennheiser HD 25 sounded more interesting than from the player, fiio fh3 - similarly (by the way, they sang beautifully with Cayin from the balance hole). Before getting the kit from ifi, I drove 660s from fiio A5 - they sounded much better than directly from the player. 4. Neighbors, with all their desire, cannot share with you the joy of owning these headphones. We need to think about a stationary setup with speakers :)

    Revainrating 5 out of 5

    Wonderful quality, one hundred percent satisfied!

    Hi all! I want to tell you about my choice towards Sennheiser! Namely, about the model (Sennheiser HD 660 S) I'll start in order: 1-Very comfortable fit. 2-Do not put pressure on the ears even when new. 3-Good equipment will please you with high-quality wires. 4-Well, of course, this is an amazing sound, it dips you into an amazing world of new sounds and details ! For reference sound, I recommend warming them up for at least two days with pre-downloaded white noise to improve playback! The…

    Pros
    • Great sound Detail to goosebumps Quality equipment For those who are looking for a decent sound, They are worthy Studio monitor headphones
    Cons
    • There are simply no drawbacks to this model It is a fact

    Revainrating 2 out of 5

    It was a bad idea to buy it, the money was wasted.

    After reading reviews on the internet and watching videos on YouTube, I decided to buy ears to replace my Sonya 7605 for listening on the Hiby R5 player. The choice fell on Sennheiser 660s, I did not consider the younger models because they are 300 ohm and it will be difficult for a player of my class to swing them. Just there was a promotion for 660 for 24k. And how did I auel when I heard their sound. There is no upper, sub bass too. The sound is boxed, in general, complete darkness. And this

    Pros
    • thick cord
    Cons
    • Sound and more sound

    Revainrating 5 out of 5

    I can't stop being happy with the purchase, a very good deal!

    It's hard to describe the sound - it' from clical to heavy metal, Flac 1 - Dmitri Hvorostovsky "Where Are You, My Brothers? " 2022 Somewhere far away Cranes 2 - Mozart "The Marriage of Figaro Le Nozze di Figaro" Le nozze di Figaro, K492 - Sinfonia Le nozze di Figaro, K492 - Act I - No. 10 Aria - 'Non piu andrai' Organ Adagio & Allegro in F Minor, K594 - Adagio 3 2022 gateways 4 2022 Her Ghost In The Fog 5 - Everyone, Everything, Everywhere, Ends" 2022 Vilja & drom 6 2022 Kill & Become 7…

    Pros
    • This is a purely personal opinion, not claiming to be the ultimate truth! Excellent product quality, sit comfortably on the head and sound good: expressive, slender and powerful! I listen mainly to heavy metal and this is the perfect model for extreme music styles - smelted from the furnaces of hell 666 all the cleanliness is in its place, nothing "runs" it is neither wide nor narrow, but it feels like you are listening to music in a small club, b drums on high-speed metal are much better, you will feel them with your whole body, clear, how to describe it, soft and natural, no falsity or extra accents are heard in the voices, the mids sound pleasant, characteristic of all Sennheiser headphones, remains, the sound does not cut the ear, Personally, I liked this character, the overall sound has become more detailed, all the nuances of the phonogram are heard in it, but at the same time, the sound of the HD660S is softened, less detailed, but more comfortable.
    Cons
    • I understand those people who did not like this model, and I do not understand people who give negative reviews a thumbs down! Many compare 650 with this model, I think that this is not correct, since they are not the same. 660 after 660, it's as if a veil has been pulled on .

    Revainrating 5 out of 5

    Everything about the product satisfied me, the price is perfect.

    There is Massdrop58 / 650 is the absence of a muddy and slightly raised middle in the region of 2-3 kHz, due to the fact that they removed the overlaps made by the engineer in the 90s in order to pull out the frequency response, at the same time the hump on the midrange went away, there are also Beyerdynamic DT250 / 250 and Etymotic ER4, this is precisely the evolution of the 600/650 models, and not marketing, and it makes sense to take them.

    Pros
    • Evolution of the 600/650 models

    Revainrating 4 out of 5

    The item is of good quality, there is only one minor defect.

    After some hesitation, I did not change the old Sennheiser HD600 for them, With its pros. Detailed high-resolution sound found in all Sennheiser 600 series studio headphones. Balance cable included. They are swayed not only by stationary equipment, but also by players with a strong telephone output (for example, Ibasso DX160), which is greatly helped by a cable with a 4.4 mm balanced plug. Its cons: The difference in sound compared to other Sennheiser 600 series studio headphones is minimal…

    Revainrating 5 out of 5

    Beyond praise! The product definitely deserves your attention.

    Got pros: Very good bass Comfortable . Not tight. The impedance is 150 ohm, but the headphones are taken out by realtek alc 1200 (z490m gaming x) at more than sufficient volume. You can slowly save up for a normal amplifier and DAC Its cons: It seems to be open but jammed like closed. If you turn it on loudly, you also don’t hear yourself as in closed ones, and you speak loudly, disturbing your relatives, especially when you stream

    Revainrating 4 out of 5

    I expected mediocre quality, but the product was pleasantly surprised.

    After some hesitation, I did not change the old Sennheiser HD600 for them, Got pros: Detailed high-resolution sound found in all Sennheiser 600 series studio headphones. Balance cable included. They are swayed not only by stationary equipment, but also by players with a strong telephone output (for example, Ibasso DX160), which is greatly helped by a cable with a 4.4 mm balanced plug. Got cons: The difference in sound compared to other Sennheiser 600 series studio headphones is minimal. The…

    Revainrating 5 out of 5

    The ratio of price and quality is very pleasing, I will repeat the purchase.

    You definitely need an amplifier or, at worst, a good sound card with a headphone amplifier. For the sake of interest, I connected it to the built-in sound system - the sound became flat, and in order to get how acceptable the volume is, you need to turn it up almost all the way Its pros: Great sound, very detailed and rich. After the ACG headphones, at first there are not enough highs, but when you listen closely, you understand that they are just right and they are really very detailed. Fans…

    Revainrating 5 out of 5

    Everything about the product satisfied me, the price is perfect.

    Hello everyone, today I want to tell you about Sennheiser HD 660 Audiophile Headphone. My first open headphones, I really liked it. The sound is excellent, I connect it through an external sound system, as well as to the output from the guitar processor. I am very pleased with the headphones, many songs started playing in a new way, I plan to buy wireless ones for trips (if someday all this covid darkness will end)

    Pros
    • They sit comfortably, long cable, open, the sound is super
    Cons
    • Didn't find it for myself

    Revainrating 5 out of 5

    The price/quality ratio is great, I will buy again.

    All potential users need to pay attention to the marketing tricks of manufacturers. In particular, 150 ohm impedance compatibility. I will give my experience: Fiio X5 III source - the manufacturer claims support for 150 Ohm, Sennheiser also claims support for portable players - in practice, the player with this product plays loudly, BUT the sound is comfortable only up to 1/3 of the volume, then it becomes "hard" and unpleasant due to the growth of distortions generated by insufficient power of

    Pros
    • Beautiful sound (live, dynamic, reliable - of course, my subjective opinion :)). With a good source - goosebumps are provided (it easily plays Rammstein, Scorpions, Queen, Nightwish, Moby, jazz lovers will not be disappointed either).
    Cons
    • Difficult to name, see comment.

    Revainrating 5 out of 5

    The best price for such a product, I will buy more!

    One of the best headphones in terms of technicality / musicality / convenience. More versatile in sound than many top and pre-top headphones, like Beyerdynamic T1, Amiron Home, Sennheiser HD800, HiFiMAN HE-6, Audeze LCD-2, Fostex TH900, X00. Unlike the classic HD600 and HD650, the HD660S is free from their shortcomings: peaks in the upper mids, sluggish bass and muddiness at high frequencies. A big advantage for me is the low weight, you can spend half a day in headphones without any…

    Pros
    • - natural, dynamic and open sound delivery, very good mids - genre universal, high and low frequencies are not overstated, cymbals and sibilants do not stand out, the low-frequency spectrum sounds natural - high resolution and good elaboration of instruments in the sound space - lightweight and comfortable fit, oval capacious ear cushions - relatively easy to swing, require minimal amplification - reliable design, all parts of the headphones are easily replaceable, detachable cable
    Cons
    • - high price - the presence in the kit of an expensive and not everyone needs a balanced cable

    Revainrating 5 out of 5

    Exactly as promised by the manufacturer, high quality.

    Experience of use 2 years. Source Audient id14. On these headphones, I realized that they do not need warming up: your brain needs it to correctly perceive everything that these headphones give. The first 3-4 days I just enjoyed the cool sound, and then I caught euphoria. The sound didn’t change, I just didn’t immediately understand all its informativeness. After that I hear everything differently. After experimenting with various headphones, I easily took the 660S as a standard - exactly as…

    Pros
    • Sound, convenience, reliability, openness - no pressure on the eardrums. You can listen to them all day long.
    Cons
    • Noise isolation - due to the open design, they are suitable for listening only at home and in complete silence. But you can hear the whistle of the kettle or a knock on the door :)