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Sennheiser HD 660S Wired Over Ear Headphones Without mic(Black)
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Last Amazon price update was: May 16, 2024 12:51 pm
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com (Amazon.in, Amazon.co.uk, Amazon.de, etc) at the time of purchase will apply to the purchase of this product.
- Reference class open back, dynamic headphone employing new and improved transducers delivering low harmonic distortion
- Transducers are hand selected for precise (1 dB) left and right matching tolerance insure exceptional accuracy and presentation of stereo spatial characteristics
Sennheiser HD 660S Wired Over Ear Headphones Without mic(Black)
Sennheiser HD 660S Wired Over Ear Headphones Without mic(Black) Prices
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Specification: Sennheiser HD 660S Wired Over Ear Headphones Without mic(Black)
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Reviews (9)
9 reviews for Sennheiser HD 660S Wired Over Ear Headphones Without mic(Black)
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Pawan Kumar –
In short:
The HD660s sits right in between relaxed, euphonic HD6-series and the technically better, better soundstage Beyerdynamic DT1990, costing with grainness/unnaturnalness/fatigue.
Long story:
After several hours of watching reviews on Youtube and reading Head-fi about the HD660s and having HD58x, have had HD600, I decided to take the chance ordering HD660s without listening first.
This is an OK headphone, with good extension in both ends, technical and clear, no doubt about it.
I have amped it well (THX aaa 789) fed balanced by a not bad r2r DAC, also tried directly from my Samsung phone.
Stock tuning is pretty good, but I preferred Oratory1990s eq-settings for Harman-curve.
HD660s feels like an all arounder, does everything pretty well.
The thing is, regardless of eq or sources tried, its is just a little fatiguing and unnatural.
The 6-series is known for not beeing just that (they also have a different driver).
I feel the HD660s is trying to be a litte more like Beyerdynamic DT1990 (similar price in EU).
However this “costs” the smoothness and euphony the other HD6-headphones are known for.
For what the HD660s is trying to be, the Beyerdynamic DT1990 is just downright better in my regard.
There is like, no contest.
I think I have finally got to the point where I understand what I want: 2 headphones.
EQ-ed Beyer DT1990 for days when I want to feel all the instruments and listen more actively, and a more relaxed HD58x or HD600/HD650/HD6xx for days when I just want to relax with music.
PS. Equalized to Harman-curve Beyerdynamic DT1990 is VERY good, does not feel unnatural, sibliant or fatiguing.
coiler –
Ho letto molte recensioni prima di acquistarle.
Sono cuffie “divisive”, o le ami o le odi.
Se cercate il suono con la botta dei bassi e gli alti sibilanti e accentuati, se amate la musica techno o elettronica, se vi piace ascoltare con la cuffia per brevi periodi ma a volume da spacca timpani beh… cercate altrove.
Queste 660S sono l’evoluzione delle 650 che già conoscevo, con un vantaggio non trascurabile e cioè il dimezzamento dell’ impedenza che passa da 300 a 150 Ohm rendendole di fatto pienamente utilizzabili anche senza un ampli cuffie dedicato.
La resa sonora è piuttosto neutra, piacevole per lunghe sessioni di ascolto. Le frequenze medie e le voci sono rese molto bene, le alte frequenze leggermente morbide e i bassi veloci e ben definiti senza essere roboanti. Sono cuffie ottime per ascolto di musica jazz, rock classico, musica sinfonica, concerti per piano e orchestra.
Sono leggere e non stancano anche dopo molte ore di ascolto grazie ai pad molto grandi.
Sono cuffie aperte, quindi aspettatevi di usarle in un ambiente silenzioso e senza persone intorno a cui potrebbe dare fastidio il suono che si diffonde.
Come resa spaziale degli strumenti mi aspettavo qualcosa in più, la separazione dei canali è ottima ma il sound stage non è larghissimo per essere una cuffia aperta.
Aggiornamento: dopo circa un centinaio di ore di ascolto si sono rodate e quindi nettamente “aperte”, migliorando notevolmente la risposta ai bassi e alle medio alte frequenze.
Cinque stelle meritate.
Pro:
– qualità del suono
– Comfort
– cavi sostituibili
– connessioni standard e bilanciata
Contro:
– leggermente carente nella fascia bassa sotto i 100Hz
– alte frequenze sopra i 5Khz leggermente sotto enfatizzate
Vikas Mehta –
I’m not an experienced reviewer, and still fairly inexperienced with this tier of headphones. But maybe my experience with these headphones as an average audio enthusiast might help some likeminded individuals decide if these are worth checking out or not.
The setup and sources I use
Primary Source/DAC/Amp: Fiio X5 mkiii
Music sources: Spotify Premium, HiFi, Flac, 320 kbps
Build quality
No complaints here. Even though the exterior is mostly plastic, the frame of the headband is made from aluminum, and does not feel cheap or vulnerable at all. The plastic allows these headphones to be very light, which contributes greatly to the comfort. The HD 6– series have been known to endure for decades when properly taken care of, and I have not found any reason to doubt that.
Comfort
This might be the most significant selling point for me. They are definitely not very comfortable right out of the box, since the clamping force is initially quite prominent. Also the pads are fairly stiff, which in combination with the clamping force, puts a fair bit of strain on the arms of my glasses. They still were more comfortable than many headphones I’ve owned before though.
As time progressed, the headband loosened up, and the pads had worn in, forming to the shape of my head. Since then, they haven’t been uncomfortable at all anymore, and I’ve been able to keep them on for endless hours without feeling strained. Like many others have said, you just forget that you’re wearing headphones after a while.
Power requirements
They are rated at a nominal impedance of 150 ohms, and are advertised to not require a dedicated amp for good results. While I do agree that these sound absolutely fine with my iphone X and galaxy s9+, but i primarily use a Fiio X5 mkiii player and that has definitely shown a worthwhile improvement. Not only to achieve satisfactory levels of volume, but also to remain free from distortion at much higher volume levels than my on-board audio. It just sounds more effortless and linear overall.
Sound
Bass
The bass on these is tight, quick and punchy. Without EQ, the amount of bass is leaning more towards being bass-light, which isn’t optimal for bass-heavy genres like modern hip-hop and various electronic subgenres. There is still a decent amount of mid-upper bass, which is sufficient to nicely complement instrumental/vocal focused genres like rock, jazz, soul, classical etc. With EQ, the bass can be elevated quite a lot without sounding distorted or awfully off. Also, with tracks that have a lot of loud bass going on, the bass does start to audibly struggle quite a bit, and can at times sound a bit distorted. Overall, it’s not capable of being a bass-cannon, but for my likings, it’s capable enough.
Midrange
This is regarded to be the main reason why the 6– series has been so popular for over 20 years, and rightfully so. Vocals sound impressively clear and forward, definitely the most realistic representation of vocals I have heard on any headphone. Even realistic to a degree where you can almost feel the breath of the singer. Intrumentals are also presented with magnificent detail and separation. Opposed to the HD 600 and 650, these don’t sound veiled at all. Vocals are very much in-your-face, instrumentals right behind it, without feeling like anything overshadows anything. Very impressive!
Treble
I am quite treble-sensitive, which contributed greatly to why I like the 660 S more than the 600 or 650. To my ears, the treble is already leaning towards the brighter side, but the EQ conveniently smoothens it out just enough to hit the sweet spot for me. The slightly recessed treble does translate into a mild loss of fine details and sparkle in that area, but for my own listening enjoyment, this tradeoff is worth it for me.
Soundstage
The soundstage on the HD 660 S is decent, but not impressive. It’s still wider than any closed back headphones I have tried, and there is enough width to get a proper sense of separation and distance. It sounds a bit wider than the 600/650 to my ears, but this might be because there appears to be a bit more air in between different sounds. On the 600/650, adjacent sounds can sound a bit more like they are transitioning into one another, while the 660 S sounds like there is much less of a transition, and more air in between sounds.
Final verdict
The HD 660 S does a lot of things exceptionally well, and has not revealed any major flaws. The combination of comfort, the beautifully balanced sound signature that never fatigues, the resolving capabilities, the flexibility to EQ this to a wide variety of different sound signatures all make this a headphone that is very difficult to criticize.
Vikas Mehta –
Sennheiser’s most celebrated 600 series has been here for a while ( few decades ) now.
Much about it has already been said & reviewed.
A well tried and tested Headphones by many audiophiles and sound professionals.
HD 660s
Great build quality, sexy open back design , awesome comfort and great fit.
Let us come to the Sound part now.
This one can be classified as a midrange king in the price segment.
The Midrange frequencies sound so fabulous on these , Especially the Vocals.
It keeps the overall clarity , the highs , the lows , the mids and enhances and isolates the vocals.
Highs are tweaked precisely to a point where it’s perfect and not too sharp to give you an ear fatigue.
Lows are quite present and the base response is punchy ( even being open back which is quite a surprise )
And the base doesn’t mingle with any other frequencies.
Soundstage is minimal, yet present. But not that wide.
Yet the sound seems to come from multi directions , and that’s what I love about these headphones. The sound doesn’t just come from left or right. But it’s left, far left , below left , above left. Etc.
And that gives you an immersive musical experience.
Last but not the least. The acoustics Sound so awesome on these headphones that you can listen to Acoustic guitar etc on them for hours and hours. Crystal clear.
It has a impedance value of 150 ohms thus you need a good amplification to drive them properly.
For me Fiio Q1m2 Drives them in a good way. But amps like xduoo etc drives them to their full potential, So Buying one soon.
My search for perfect sounding headphones has stopped for few years now after i got the 660s. And they will stay with me for years now.
PS
The seller appario retailer didn’t ship them properly, the box corners we’re quite damaged also it took around 8 days to deliver them to me. I didn’t return as the headphones inside weren’t harmed.
Yet Not a good experience from the seller. So be cautious.
Update – September 2020( 4 months later )
After comparing same 660s that my friend had, I found out my earpads we’re almost 50% flatter and looked like they had been previously used even being brand new.
Don’t know whether it was manufacturing defect from Sennheiser side or is it something to do with the seller ( as I previously mentioned that my box wasn’t completely sealed while I received the package. )
That’s generous of Sennheiser that they have promised me new pads as the product is under warranty.
Ps again be cautious while buying from appario retail.
Update after 3 Years of regular usage- the drivers are opened up on an elite level & that gives an immersive experience. Have recently paired them with Sonata E44 Tempotec DAC Amp- & with the balance cable it is delivering a Sound quality at an astonishing level.
For me ( 660s with balanced cable using E44 DAC amp & with apple music lossless ) this has become an end game for my audiophile journey. cheers!
Kindle Customer –
Only con there is no short cable in the box
Harshad Lamrood –
Owned hd 598 for 2 years . Loved it . Thought hd 660s would be much better but couldn’t find anything by using it for 2 days. I still prefer 598 more due to comfort and sound is almost similar to 660s. couldn’t believe it. Used it with fiio k5 pro
Amazon Kunde –
Sennheiser claims the HD 660S is worth 499 EUR. Meanwhile, the AKG K712 Pro has been around for 220 EUR since more than three years. The fact that the HD 660S is sold at 389 EUR instead of 499 EUR is no surprise.
Let me begin by stating the obvious: the HD 660S is a five-star 300 EUR headphone. Above 300 EUR, the HD 660S starts to struggle. At 400 EUR, I would give it four stars. At Sennheiser’s asking price, I would give it three stars.
SOUND
The K712 Pro has better extension, especially in the lower end: the bass has more texture and is more dynamic. The soundstage is also larger on the K712 Pro, allowing for more space between instruments and better 360° positioning. This can be especially important in a recording with many instruments, like a symphony orchestra. Overall, the AKG is brighter, thinner and larger sounding. It is brighter because there is more treble, thinner because there are dips in the midrange and less high-bass, and larger because the soundstage is bigger. So brighter, thinner, larger and a bit more dynamic.
The HD 660S comes in now. It exhibits a more natural timbre because there are less dips and peaks throughout the frequency range (more neutral). In comparison to the K712 Pro, the HD 660S sounds smoother and fuller: smoother because there is less treble (plus a slight veil) and fuller because there is more midrange. The soundstage is more intimate, albeit the instrument separation (layering) and right/left imaging are superior. The bass does not reach as low and does not punch as nice as in the K712 Pro, and the soundstage does not surround you either. Nevertheless, because there are no notorious dips throughout the frequency range, the resolution (detail retrieval) is better throughout the midrange, low-treble and mid-treble (the high-treble is rolled off on both headphones). The “Sennheiser veil” is still present and it is part of what makes the sound smooth and silky. Because of the tuning though, the higher resolution means you can hear more details even if the sound is less clear. Confusing, I know.
So which headphone sounds better? The AKG has superior extension, dynamics and soundstage; the Sennheiser has better layering, resolution and timbre across the midrange and treble. Even though the AKG sounds brighter, it is still dark and relaxing (far from Beyerdynamic brightness). The HD 660S might lack energy with some songs, especially if they rely on low-bass “punch”. Nevertheless, because the HD 660S has more high-bass and midrange, it sounds fuller (less thin).
POWER
You will need a powerful external amplifier to run the K712 Pro to its full potential. Otherwise, it might not sound good. I use a JDS Labs “EL AMP II” connected to “EL DAC II”. This Amp/DAC stack has plenty of juice and can run the K712 Pro without a problem on low gain. The HD 660S is more efficient and won’t need so much power to sound good. I do not recommend any of these headphones, however, if you plan to plug them directly to your laptop (they won’t sound good and you won’t get enough volume).
COMFORT
Going to comfort, the AKG K712 Pro is more comfortable overall. Although the design of the headband is questionable (no padding), the light weight of the headphones does not generate any real hot spots on your head. The main reason for the superior comfort though lies in the low clamping force, memory foam earpads and huge earcups. The clamping force of the HD 660S is strong and the foam of the earpads is harder and does not feel like memory foam. The headband of the HD 660S, however, is better designed.
DURABILITY
Because the AKG K712 Pro relies on thin elastics to suspend its headband, the durability of the construction might not be as good as with the more traditional headband found on the HD 660S. Another reason to bet on the durability of the HD 660S is the fact that you can find replacement parts for every component of the headphone with Sennheiser: headband, grills, earpads… you can replace every part of this headphone without a problem. With AKG, now Samsung, it’s a different story. Therefore, in terms of build quality and durability, the winner is clear: Sennheiser.
CONCLUSION
Should the HD 660S be twice as expensive if it does not sound better? I do not think so. Even if the build quality and durability are superior on the HD 660S, the K712 Pro is more comfortable. It is a tough choice and I think at the end it all comes down to sound preference. If you value more bass, soundstage and dynamics, you will very likely prefer the sound of the K712 Pro. If you prefer a more intimate, smoother and fuller sound, then go with the HD 660S. Both headphones are excellent but I do believe you get more value for your money with the K712 Pro at their current prices. It would be easier to recommend the HD 660S if the price difference would be around 80 EUR, mainly because of its durability. Otherwise, it feels overpriced (in comparison to the K712 Pro).
Amazon Kunde –
There were several reasons to add these “Sennheiser HD 660S Over-Ear Open Dynamic Headphones – Black” to a small but growing personal mini-collection.
The packaging is essentially to expectations, card sleeve enclosing a solid box in which are the ‘phones, cables and data booklet. The only issue is that the box is a VERY TIGHT fit in the sleeve and difficult to remove without damage to the sleeve, not that all will care about that! Once extracted, a thick lump of dense foam packaging within the box pushed its two sections outwards and the cause of the difficulty.
Included cables are a 4.4mm balanced and a 3.5mm unbalanced, both 3m long and rubberized. There is an option for a balanced XLR cable should that ever be needed. As best known, coiled versions are not available as potential alternatives to those provided as they have a reputation for kinking. Rather than the gold-plated brass headphone adapter most manufacturers include, there is a short adapter cable ending in a plastic-bodied socket. The connectors linking with the earpieces are not obviously keyed other than being labelled L and R, respectively, on the outside.
The earpieces lack any obvious labelling for side (L or R). The cable connectors are marked but the lettering is small, black on black and barely rise beyond the general surface. The key is the gold S logo on each unit which should be oriented to the rear.
The headband is the expected thick, broad band with deep velour-covered foam pads to either side of centre with sufficient adjustment for different head sizes, hairstyles etc. The ear-pads are also velour-covered which should be longer-lasting than the ‘leather’ found on lesser models and that usually need replacing within two years; these should last several years. Both sets of padding are sufficiently thick and comfortable.
While immediately comfortable to wear, and likely to be just as comfortable after several hours, they are quite lightweight as plastics are used extensively, a significant surprise at the price paid. Were construction of carbon-fibre, glass-fibre or a honeycomb composite as used in the aviation industry (subject to suitability); the weight would be similar but perception of construction standards would probably be higher. Regardless, construction is to an adequately high standard although a hard case may be desirable should they need to be transported between home and studio or between venues; the ‘phones are not designed to fold so is likely to be large and preferably internally sculpted to fit. At home, a suitable headphone stand (a polystyrene head?) could be a worthwhile addition.
Designed for audiophile, professional studio or monitoring purposes the HD660s’ perfectly flat mid-range and lower-treble – the portion of the audio range most relevant when monitoring or producing – is outstanding and probably exceeds almost everything within their price range. Overall frequency response is quoted as 9 Hz to 41500 kHz but without a specified variation at the extremes. Sub-bass performance out-of-the box is less impressive.
The HD660s generally requires a headphone amplifier and that is how it will be later used; a burn-in period using a radio’s headphone socket as a source will follow almost immediately with the ‘phones buried under a pile of cushions to deaden the leaking sound over the minimum of two or three days’ continuous play it involves – it isn’t necessary to listen, especially if in a bedroom at night!
The amplifier owned offers two functions dedicated to an older Sennheiser model that is now manufactured by another company and rebranded. That model has widely recognized performance issues that the amp can resolve. Although not specifically intended to support them, it was suggested by an independent professional audio lab that there is a shortlist of Sennheiser models that each benefit when partnered with the amp; the HD660s is one, supported not equally but even better! That information was previously unknown.
Having purchased the amp to use with other owned headphones, it was initially thought not to be fully functional as its benefits were not audible with either. Questions were raised with the manufacturer and some clarification followed but additional questions were raised but not yet resolved. Once support for the HD660s was known via another source, their purchase was initiated.
Personal curiosity about the amp’s benefits needed to be satisfied and results for both functions are highly favourable, very evident even for older ears. With both working in consort, low-bass performance is improved, the sound rounder and more characterful helped by a slight rise and smoothness in the high-treble area while the expanded sound-stage is dramatic having eliminated the sense from the HD660s alone that performers who previously appeared to essentially be shoulder-to-shoulder were now spread across a wide area with a well-defined left, right and centre, not each in a single location but with individual isolation. After burn-in, performance should be smoother and more impressive.
As a headphone amplifier is almost indispensable, purchasers should undertake their own research to ascertain which best meets their budget and usage requirements as prices range from sub-£100 to low-thousands! Personal choice, initially incidental and with no expectation that the HD660s were soon to be purchased, may have resulted in the perfect partner without breaking the bank!
Without doubt, these are the best headphones ever heard although not the first to be of a professional audio standard. There was unsatisfied expectation that there may be an individual performance print-out of the actual unit’s audio spectrum, distortion levels etc to demonstrate just how closely the two ear units matched; a similar chart was provided with professional ‘phones purchased in the ’70s and binned when its gel-filled, non-replaceable ear-cushions solidified over several months one summer.
Harshad Lamrood –
I have used several headphones. I have a Bose QC 35. But none is close to this. Stupendofabulous!! 3 cheers!