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Sennheiser Consumer Audio

Sennheiser Consumer Audio HD 660 S - HiRes Audiophile Open Back Headphone

    • Based on 1,960 reviews
Condition: Used - Very Good
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Apr 28
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Features

  • 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

Description

Sennheiser's new HD 660 S is an open back, dynamic headphone designed for the passionate audiophile. Meticulously crafted for the most demanding listeners, the HD 660 S builds on the legacy of the legendary HD 650, surpassing the exceptional performance of its predecessor incorporating a new and improved transducer that delivers lower harmonic distortion producing a more natural, lifelike audio experience. It is exceptionally accurate and transparent, with an expressiveness that immerses the listener in every emotion and nuance of the music. Employing a lower 150 ohm impedance, and supplied with cables using balanced (4.4 mm Pentaconn) and 6.35 mm connectors, the HD 660 S offers connectivity versatility to provide reference class fidelity with stationary and mobile audio players alike.

Brand: Sennheiser Consumer Audio


Model Name: HD 660 S


Color: Black


Form Factor: Over Ear


Connectivity Technology: Wired


Item Weight: 9.3 ounces


Item model number: HD 660 S


Batteries: 1 Lithium Ion batteries required.


Is Discontinued By Manufacturer: No


Date First Available: October 25, 2017


Manufacturer: Sennheiser


Item Weight: 9.28 ounces


Units: 1.0 Count


Number Of Items: 6


Cable Length: 3 Meters


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Apr 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

    • Sends chills down my back, the audio is so good.
Style: Single
I got these instead of getting some ANC headphones, and boy was I happy with the purchase. First off, the packaging made me feel special. These Sennheisers come in a beautiful, stiff box with molded foam in the interior so you can use it again and again (and I did). There are multiple wonderful dongles and adapters for many different use cases, all with their own little place in the box. The headphones are relatively light, and the build quality feels, well, German. Attention to detail and material quality is through the roof. When I put them on, they clamped firmly-but-comfortably to my head, all the way around my ears. Since they're open-back, I can hear everything in my room, which makes it feel a lot more personal, almost more like a concert. I started listening to TOOL, and immediately had to lay down on my bed to absorb the experience. There's no way I can use these headphones casually, they're meant for a focused enjoyment of the songs you play. I went through my library, experimenting with different genres. I found that they reward you greatly for clear, high-end music such as TOOL, Pink Floyd, non-bass-heavy EDM, soundtracks, classical, jazz... the list goes on. What they aren't meant for is bass-heavy rock, hip-hop, edm, pop, etc. Since they're open-back, they really don't resonate well and the bass is quite weak. I found that I could play them fine off my iPhone with a converter dongle and the Dolby-Atmos high-res songs. I was thinking about getting a new DAC to try providing more power for bass, but at the moment, they work fine. Pros: -Sound quality and clarity that hits way above its price point -Great storage case -Multiple dongles and wires for different configurations and uses -Comfortable -Excellent build quality Cons: -Weak bass -Due to the weak bass, doesn't play some genres well, such as hiphop, EDM, etc (but I've found this to be song-specific. It doesn't like Parkway Drive's harder songs, but it loves 'Cemetery Bloom' since it's gentler) Would I buy again? -Yes, but if I want to experience all song genres, I may invest into a headphone DAC. ... show more
Reviewed in the United States on September 1, 2023 by SassySpaceDragon
    • HD 660 S review - Magical legendary-ness - S Tier goodness
Style: Single
Let me start this off correctly. These are the best and closest to perfect headphones you will be able to find overall. The 660 S is pure magic for your ears. It’s worth the price. 💯 We can’t really talk about the 660 S without talking about the 650. I had the HD 650 back from 2013 to 2016 until I finally sold them. The HD 650 are top notch headphones, but I switched over to the X2s at the time. I don’t regret the choice. The HD 650s need a lot of power and the X2s at the time had very little competition in the $300 segment. They had more soundstage and bass. The HD 650s, which the HD 660 S is attempting to dethrone here, is an absolute monster of a headphone. The 650s offer a fatigueless experience and have basically no major flaws. True for it's time. Then I got the 660 S! The 660 S is the better headphone. It’s easier to drive first of all. Many of you may not even know what Ohms and sensitivity are. Let's say the 660 S is in many cases 30-40% louder on the same equipment. The 660 S can do everything the 650 and 600 do much better. Don’t let anyone trick you on this. It’s better – in every way. Through some sort of magical engineering, the 660 S takes the 650s top end veil off, without bringing up the highs. In fact, the highs are even further recessed on the 660 S. Don’t let this pull you back. All the details are there. Unless you’re a huge fan of V shaped headphones, you won’t find something better under $500 than this. That’s just how it is. You have to accept it. This is S tier all over the place. Let’s talk further about sound. I’m going to be brief. The 660 S are the smoothest headphones I’ve ever heard. Highs, bass, and mids are absolutely and completely balanced. Bass is punchy, accurate, and present. Mids are, of course, the highlight of the 600 series and here you are getting the best mids nearly of any headphone unless you step up humongous amounts of $. The soundstage is fantastic. It’s not too wide or too narrow. It’s just right. Where these really shine is the treble for me. These present fatigueless, milky smooth, crystal clear, purely magical, ear soothing, and perfectly accurate highs. These are a 9.5/10 headphone and S tier. You can’t beat these even if you pay $500. If you can get them for less than $500 then you are getting the best deal of your life in headphones. They are significantly better than the 650. We aren’t talking a little here. There’s a huge jump of at least 30% in clarity and imaging. Huge. I bought these and the Fiio K5 Pro. I’ve never heard sound so good in my life and I used the Creative Z with the HD 650s for years. As soon as I put these on and listened even for a little bit, I was floored by what I was getting. I said the highs were the best part right? The IMAGING!! What the heck? Let me tell you I listen to music from video game OSTs more than really anything. Wow. Incredible. This will show you details in something as old as SNES music that you never even knew existed. The imaging on these has to be some of the best in the entire world. Sounds pop up all around you and it doesn’t just sound like two speakers hitting your ears. Phenomenal imaging. They sound so clear. If you’re on the fence like I was, just get these. Do it! They’re glorious. They’re glorious with any DAC assuming they have enough power. Yes, my K5 Pro sounds way better than my other DACs, but stepping down into a lower DAC is not a disappointment at all. They’re still top tier and the best. Yea, I don’t care about all the Sundara & DT 1990 hype. Those two don’t image like these do. If you absolutely must have the bass, then these may disappoint, but if you aren’t a bass head, then these are a no-brainer. I’ll also help you here. If you really can’t justify the pricetag of these, then get the Philips SHP 9500 with the K5 Pro or E10K-TC. This combo will probably be a little cheaper, but it will sound pretty good & similar. The 9500 with the K5 Pro is quite exceptional. You won’t have the milky smooth highs though. But, if you *only* are in need of headphones, then get the 660 S. Do whatever you have to do to get your hands on them. Here's another tidbit. You can repair the HD 660 S easily with spare HD 650, 600, or 660 S parts. Everything can basically be tool-lessly repaired in the 600 line. It’s extremely supported with cables galore everywhere. The issue with the Sundaras and the 1990s is that they’re not going to have the level of support that the 660 S has. There’s a reason that the 600 series have been going strong since 1997. The 660 S is the gold standard now and every headphone should be attempting to live up to their magic. Yes, they’re legendary. Yes, the legend continues. ... show more
Reviewed in the United States on March 6, 2022 by Chase86
    • Great for Gaming & Music
Style: Single
Bought and used these on a daily basis for about a month now, and can comfortably say they're 100% worth the price. I bought with the intention of using primarily for gaming and music and have been left extremely satisfied. I am by no means an audiophile -- my previous headphones were Turtle Beach. But bought these to upgrade to a more focused and enhanced listening experience, and now I don't think I can ever go back. I paired this with a Fosi Audio Q4 DAC, and the sound quality is extraordinary. I am legit hearing different parts/instruments/backgrounds of songs that I had never heard before in previous hearings, even though I've listened to some of those songs hundreds of times. They're open-back, so the audio definitely leaks to the outside, but I just sit in my room in the dark at 3am so it doesn't disturb anyone. Admittedly though, not the most comfortable headsets. They are a little tight, and I thought after a month of use they'd open up a bit and be better. But I also have a rather large head, so I'm not going to remove any points for that. Although compared to my other Sennheiser headsets, definitely more uncomfortable. The only drawback, really. ... show more
Reviewed in the United States on November 8, 2023 by MerchantMarv

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