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Sennheiser HD 650 Headphones

  1. The Fed
    The Sennheiser HD 650 - Greatest Ever... Really?
    Written by The Fed
    Published Apr 30, 2013
    Pros - Smooth Presentation, a linear, stout sound at louder volumes.
    Cons - build quality is meh! Overall sound is too recessed and lacks weight
    The praise that has been heaped upon the Sennheiser HD650 headphone is something that probably every headphone OEM envies. The HD-650 is nearly a decade old and yet is still viewed by many as a top tier dynamic, worthy flagship, and is the benchmark that many measure price to performance ratio against.
    I personally was cruising along quite happy with my set up… Running almost exclusively between Denon D5000’s and Ultrasone Pro900’s. I felt I had the best of both worlds. Since I love the visceral impact of good bass in my music, these two pieces seemed to be perfectly tailored to my listening habits.
    The Denon gave me a little more reasonable treble energy and a little less sibilance when I needed it for something more complex and diverse. While the Pro 900 gave me that sub woofer for your ear feel that just flat out slams your ear drums. With a decent DAC/ desktop amp set up I am usually able to apply a 6kHz to 8kHz cut to smoothly equalizes the sound to eliminate that “ESSS” sounding ear razor that the Pro900 is so infamous for.
    However somewhere along the way the constant gushing over the Sennheiser HD650 got to me. Specifically Mike from Headfonia repeatedly claiming that it was the ultimate king of bass impact…. He never said king of bass quality, quantity…. He always spoke of the HD650 in terms of “Impact”.This should get just about any hard core and well funded bass head’s juices flowing and so I began looking at the viable options for acquiring this apparent low frequency giant. And so after parting ways with most of my portable equipment, I was flush enough with cash to purchase my own set of the venerable HD650.
    I will start out by saying that because of all the talk of the ‘luscious mids’, smooth highs and world class low frequencies my expectations with this headphone were near off the chart…. I have since done the same thing with my first attempt at the  Audeze LCD2. The LCD2 albeit a very good headphone, was so overblown in my mind that by the time I actually listened to it, I was disappointed. That had far more to do with my overblown expectations than anything... because second time around... being aware of how much darker the LCD2 was than its Hifiman counterparts.... I have found a place for the LCD2 in my stable.
    But by the time the Sennheiser headphone had finally arrived, it was competing with dare I say unrealistic and extreme expectations and was pretty much behind the 8 Ball from the start.
    Build & Design
    The Sennheiser HD650 is certainly a dated design. There are dozens of headphones on the market in the same price point that are better dressed. Most $500 headphones have premium materials such as aluminum, leather and wood worked into the build. The Sennheiser headphone is almost exclusively plastic. It is a shiny, cheap feeling plastic on virtually every exterior surface sans the grill, ear pads, retainer ring and bottom of the headband. Detail items like the "Left" and "Right" indicators are simply cast into the grey plastic.... This build quality seems unfit for a legacy flagship.... Obviously its been a long time since this headphone was brought to market and Sennheiser was working in the pre-Beats era, long before headphones were valued as a fashion accessory and long before OEM's thought they could bring flaghips to market with price tags north of $1000. Sennheiser's HD800 and HD700 show they clearly can design a top tier headphone both in sonic character and design quality, but the HD650 is still asking $500 USD and doesn't give you a warm and fuzzy out of the box once you've got it in your hands, at least it didn't for me.
    The headphone is extremely light. Many in the community would give it points for this and they are certainly entitled to their opinion. However I personally see this as a demerit. Speaking strictly in terms of assessing an items value from a subjective/ aesthetic viewpoint, the Sennheiser headphone appears to be made of cheaper, less durable materials. I am not going to strain my neck if a headphone is north of 400 grams. The Hifiman HE400 weighs in at a hefty 440 grams and is perfectly comfortable to me, the Denon D5k weighs in around 360 and is probably the most comfortable headphone I've ever worn. If one is spending $75.00 on a beater set of portable cans, an expendable gamer headset or a cheapie like Superlux or Porta Pros (of which I am a fan)  then by all means they should be and can be as light as a feather and made almost exclusively out of plastic without raising eyebrows. But at $500 out the door for a would be flagship headphone that was intended for listening at home or in a studio through a serious system... I don’t know.... I expected something more substantial.
    The crux of this featherweight value is that in order to keep it properly seated on the listeners head, Sennheiser had to crank up the clamping force. Otherwise the light weight construction leaves it prone to moving too easily as it has little resistive value on its own. The clamping force is something that many have commented through the years as a supposed 'death grip'... Once again just like the HE400 won't snap my neck, the clamping force on the HD650 is not going to crush my skull. It is certainly wound a bit tighter than most, but I personally believing the clamping force has been measured perfectly to counteract the lightweight construction's tendency towards moving easily. It is a goldilocks value.... not too much, not too little... Just right. This is a nod to the design engineers.
    Right off the bat my delusions of grandeur were dispelled. It is certainly nicer looking than its faux marble clad brother the 600 however as a supposed flagship headphone of such universal praise, I was underwhelmed by the look and build quality. Those who think this is immaterial are kidding themselves.... Aesthetics have value to the consuming public and audiophiles are most certainly not immune... The hifi world is littered with glitzy machined aluminum tone arms, satin metal surrounds for tweeters, anodized aluminum face plates with machine metal knobs, high gloss enamel finishes, lustrous wood side panels, frosted glass.. etc....etc...
    The die-hard says that this is simply an indicator that they chose to pour all their cash into sound quality. OK maybe this is true.... lets see. 
    Hook It Up! And Wait.
    I did not want to be hasty with a plug and play attitude as I had heard that the out of the box, plug and play sound of the HD650 was disappointing (I heard this about 10 hours after I purchased it sadly) but that a 100 hours of burn in would get you a somewhat matured sounding headphone, so onto the vintage Realistic 64B it went. This older vintage rig is hooked up in a file cabinet at work and so can burn in a headphone out of site and outta mind while I still enjoy music on my main headphone rig…. A Violectric V100 tethered to a Laptop running JRiver via my Rega DAC with a Wyred 4 Sound uLink handling conversion duties to SPDIF. 
    100 Hours - Impressions
    After it had burned half the day on Thursday and all day Friday, Saturday and Sunday by the time I got in to work on Monday the 650 had clocked roughly 96 hours of burn in time. I plugged it into the Violectric V100 and listened to some newer redbook CD rips. Muse 2nd Law, Foo Fighters Wasting Light, and Gaslight Anthem The 59 Sound. 
    The HD650 is not a bass head can. That is my first impression. Where the hell is this supposed ultimate bass weight?
    A couple of local Head-Fiers down here in the Southland told me the 650 was really amp picky and that I would do better with a tube amp like a Woo WA6 or Bottlehead Crack. However my headphone amp is a Violectric amp which is what Sennheiser uses in their “Hall of Fame” set up and is one of Sennheiser’s Senior Project Manager Axel Grell's favorite amps for his own listening. A couple others mentioned changing the cable to a Cardas one, and one guy said I might need a different DAC to get the most out of it.
    So in order to get the Sennheiser HD650 to sound good what I needed to do was:
    1. Get a different amp
    2. Get a different cable
    3. Get a different DAC

    Maybe I should get a different source, different interconnects, a new power conditioner and stop using CD's while I am at it eh? Mind you I do see where some could see this headphone as all they need and build out their entire system around it.... searching for another .5% of improvement with each piece of the puzzle... but I have already built my system(s) and am not really inclined to do a whole lot of kit rolling in order to optimize the synergy with this lone headphone when I have a half dozen others that sound fantastic through the rigs as is. 
    So my immediate disappointment with the bass could’ve derailed this whole review. I was expecting Pro900 bass or Denon D5k bass without the 7khz ear razors or recessed mids... What I got was an all too polite rendition of EVERYTHING.
    The low frequencies are extended, there is textural information galore, you can really hear the stick or the tom on the drum skins, the full decay of bass strings, mid range is sweet and smooth, and there is plenty, and I mean plenty, of high frequency detail and sonic information. Anyone who says the HD650 does not have enough treble energy or detail is, to these ears, not hearing straight.
    But that ultimate bass weight, that Mike implicates all the time, it is not here IMHO.
    The low frequency, midrange and treble are all recessed quite a bit. They do not hit you in the side of the head with impact. They don't even touch you. If this is what people are speaking of when they say the 650 is veiled then yes, it is veiled, but not in the sense that a certain portion of the frequency range is somewhat blurry or hidden.... Its more about air pressure that makes a headphone felt as well as heard. Open architecture does limit this but I've heard better open backs at giving you punch. 
    I will hop on my soap box right here and say that one part of a headphone experience that is vital to me, is the overall weight of a headphones tone. I am not specifically talking about bass extension or articulation or even the bass frequencies in particular. What I am saying is that headphones with a tonal density to them…. A robust acoustic mass that move some air pressure to bring the music more to life…. That is critical for enjoying music in my book. Otherwise it sounds like music but doesn't feel like it.
    It may not be critical for monitoring, mixing or mastering in a studio, or DJing or even for being an audiophile who wants to sample 24/192 and DSD audio tracks like they are a damn 10 year old Pinot Noir… but for the average Joe like myself who wants to simply strap on a set of headphones, cue up an album, hit play, sit back and enjoy some music…. The overall presentation doesn’t need to be “forward” but it needs to be felt as well as heard.
    Oldies like Buddy Holly, Sam Cooke, and Bob Marley all have strong drums and bass rhythm that is presented most natural when the full weight of the instruments is presented... the kick drum and bass line at the opening of Dock of the Bay sets a strong foundation for Otis and the guitar to build off of. Alternative music like Smashing Pumpkins,  The Pixies, Jawbreaker, Dirtbombs, and Blur all have bass and drums that need punch. Punk rock and other guitar driven music like Social D, Operation Ivy, Van Halen, Bad Religion, The Ramones, Rancid, The Strokes, Vampire Weekend, Weezer, Gaslight Anthem.... they all have rhythm sections, and natural timbre that is presented best when it is presented with a fully developed full bodied sound.
    Most people would rather listen to music through a great set of speakers because the music can be felt in your bones and people go to concerts because the live performance trumps every other experience. I saw Muse at Staples Center a month ago and the bass and drums absolutely rattled my bones.... Just vibrating you right down to your soul. And that is why 50,000 pack stadiums every night to see performances. Because the music overwhelms your senses. I saw the Ramones in Santa Barbara in the early 90's and it was the loudest show I've ever been to... Large Marshall double stack cabinets for both Dee Dee and Johnny and Marky's drums were mic... all in a small club (The Anaconda for anyone who cares) and the Ramones play tight so it was just a full on sonic assault.... transcendental to a young kid and still the best show I ever saw. 
    To me, listening at home through a set of headphones should be a tamed extension of that experience. Obviously headphones can't give you what a live concert can... nor can they give you what well crafted speakers can, and speakers can't give you what amps and guitars and mic'd up drums can.... but each should have a measure of the other. The HD650, although tonally sweet and smooth and carrying some weight in its tone is similar but a bit more recessed than the Audeze LCD2, it just holds you too far back from the music FOR MY TASTE. It left me wanting for something more!
    The HD650 often gets the compliment that "I could fall asleep with these on" and that to me sums up the HD650 perfectly.... It's kinda boring.
    The HE400/ HD650 issue.
    I’ve had a few people ask me which I prefer. The HE400 has a little more low end punch and the extra growl and mid range power makes it a better choice for my taste. Speaking strictly in audiophile terms the HD650 has the better acoustic chops. Its professionally damped driver fills out more evenly and more linearly but this linearity is still comes out anemic compared to the more live sounding Hifiman. . 
    At lower listening levels the HE400 is a far better choice. It gives you a tad more flesh to sink your teeth into. A bit more punch in the low end and a live wire mid range that’s tipped up just enough to make rock music sound amazing. But as we travel up the volume ladder the Sennheiser becomes more stable and stout in its presentation, everything fills in evenly. The lows get stronger as the mids get sweeter etc... The HE400 although good to a point, can get crispy and its budget level planar membrane can start smearing tones and blurring separation on complex electronic fare where 100 or more different sounds are sometimes dubbed over the top of each other. The Senn is more resolving and surefooted through big sonic waves but like said, anemic... I could live with either, but if I could only have one, it’d be the 400. Even though it tends to get a little distorted when it is under powered and doesn't have that furthest reach of resolution. It's rock and roll presentation is more enjoyable.
    Johnny Come Lately – The X1 P
    Phillips open back X1 is priced a hundred short of the 650. But there are obvious similarities. Open back design, midrange price point. But one would assume that its beautiful aluminum cups, velvet ear pads, and leather headband come at a sonic price.
    The X1 is a gorgeous looking headphone. Along with my D5000 and LCD2 it is one of my most sartorially minded. People like to contrast it against the Sennheiser Momentum…. No, the Momentum looks flimsy build and doesn’t hold a candle.
    Next to the X1 the 650 looks very dated. The plastic finish is a glaring shortcoming up front for a headphone asking $200 more. The 650 is the technically superior headphone. For the same reasons the HE400 can't play this game the X1 can’t either… It doesn’t have that same surefootedness and linearity that the Sennheiser does, nor does it scale as well. But the X1 has a more rich and nourishing tone that will appeal to music lovers and bass heads alike. Its bass slams harder, it's musical vibe is just funner. It can also get a little crispy and sibilant in the upper register when volumes start creeping up whereas the 650 never breaks form. The Sennheiser is still the “better” headphone. But for a music lover like me I am not sure how important that is. Lately the X1 has been getting a ton of head time and that speaks to its engaging tone. It gives me that 'felt as well as heard' sound that I crave.
    VS. My Favorites
    Against both of my closed back favorites, the Sennheiser plays the same song. It is linear, well engineered, accurate and anemic. The Denon D5k and JVC DX700 are simply more dynamic more emotionally engaging, and immerse you in the music. They surround you in an envelope of tone.
    The punch is there with both, but the JVC DX700 ups the ante by giving a sound stage worthy of an open back phone and providing not quite as linear but still fairly linear sound as things get louder and louder. I would choose the Denon and the JVC DX700 over the 650 every time. It simply doesn't give you as much of the song as they do. It is truncated in its presentation it sounds thin and lifeless compared to the two Japanese headphones. They are just too well rounded, dynamic and potent for the 650 (IMHO). They don't give anything away.  
    Contrasting against the Japanese duo, the Sennheiser strikes me as the stuffy middle aged guy rocking a corporate polo, khakis and cheap patent leather shoes. He presents well enough in professional circles but doesn't really have the personality to charm. The 650 is the middle aged, mid level cog in the machine. The D5k and DX700 are sharp dressed 20 somethings from Tokyo with Italian cut suits and crepe sole oxfords. Their resume may not be as thick and they may not have the same number of professional accolades but they are dynamic, engaging and charismatic. They offer excitement and future glory that you will not find with the hum drum late 40's something sitting with his shoulders slouched in the lobby.
    In closing the Sennheiser is by most normal youthful standards a little light in the ass. Some would call that a veil or laid back but it’s not laid back to me… That denotes a mellow, relaxing sound and a veil sounds like the treble is shelved down or certain parts are blurry. No this is about sound pressure levels. Air being moved by transducers. This is about 2 dimensional accuracy vs. 3 dimensional involvement. 
    The caveat to that would be in a full size stereo rig.... In those scenarios the 650 sounds a lot better than most modern 32 ohm headphones.... The only 2 in my collection that best it on the integrated amp scene are my planar headphones... both of which have flat phase response and so don't do the poorly damped thing.... But in a typical dedicated headphone setting.... to me, the 650 is a bit boring. You are held back just a bit too far from the song to truly enjoy it. I dare say that the hype may be a bit overblown….. at the very least it does not line up very well with my taste. 
    Mind you I didn't write this review to deride anyone who loves the HD650.... and I'm sure those of you that are fans of it will continue to enjoy it. But I do think there are a lot of people running around this site looking for answers, not wanting to spend their hard earned cash poorly.... and most people use this site to inform their future purchases. Because of some of the descriptive words I have heard people use, I think someone could get the wrong idea about the sound of the 650... when people call it dark, warm and full bodied.... I don't know that these words do the phones tone justice. At least not without building your entire system around the HD650. Contrasted against the greater landscape it is a bit light and lacking in body. Someone needs to say that. 
    So I hope I do not get flamed but I think that someone out there deserves to get a little objectivity on this headphone rather than just more gushing about "greatest ever". No I am not a Beyer or AKG fan boy going subterfuge.. I am just an average consumer with average taste and listening habits trying to give others like me some reasonable perspective. 
    I suppose if you dedicate all your resources to just this one headphone, you can make it sound spectacular.... But to the average head-fier who has the same low riding, subwoofin tendencies that I do. Who listens to Muse, Foo, the Black Keys, Gaslight Anthem, The Strokes.... modern music.... this may not be such a strong fit. 
    Just saying.
    1. View previous replies...
    2. k4rstar
      I agreed with this review, until I heard the HD650. Despite being so similar to the HD600s I had owned extensively before, I actually like the 650s a lot more. I do not feel they are lacking in weight; the "recession" or "veil" can be heard more easily on aggressive rock but these still have no problem running stuff by The Clash beautifully. I can see why these would be end-game for a lot of people.
      k4rstar, May 11, 2016
    3. Uzuzu
      cable change doesn't change the sound of any headphone period, unless the cable is **** quality. basically any 20 dollar cable is going to sound as good as any moon audio 500 dollar one. 
      Also the hd650 is an awesome can despite the aging design.
      Uzuzu, Jun 14, 2016
    4. Uzuzu
      Cable changes do absolutely zero to the sound, unless the cable is of cheap metal. You aren't going to ear a difference at all between 99.9 versus 9.99999 ofc, you aren't going to hear a difference between copper versus silver. Audio engineers agree. Recabling the hd650 does NOTHING to improve it and that is FACT. It also isn't picky and sounds about as good off a 100 dollar amp versus a 1000 dollar one. I run mine through a lyr 2 but was no less happy using it through an e09k.I'm serious. And balance and non-balanced sound exactly the same. Balanced offers zero audio advantages unless your cable is 60ft long.
      The hd650 also needs no foam mods or any mods at all. I only recommend another cable because the stock one is way too long. But even a cheap 20 dollar chinese one will sound as good as an overpriced cardas cable. hd650 is perfect being stock, and still better than any headphone in the 300-500 dollar range.
      Uzuzu, Jun 19, 2016
  2. TwoEars
    Still one of the world's top headphones
    Written by TwoEars
    Published Mar 22, 2011
    Pros - Richly detailed, supremely textured, natural sound that is smooth, effortless and relaxing to listen to. A forgiving allrounder with superb comfort.
    Cons - Open headphone that requires good source and amplification to perform its best
    I've listenend to all the top offerings from Denon, Beyer, Audeze, AKG, Hifiman, Ultrasone & Sennheiser and this is one of my personal favourites. It is a true reference headphone that is very natural sounding, albeit leaning ever so slightly towards a darker tone. The sound is detailed, smooth and richly textured, especially drums and vocals come alive amazingly well. It has no problem spanning all the way from the deepest bass to the highest highs with supreme control and plenty of muscles to spare.
    For the money I think this is a real audiophile bargain; the HD650 exists on that plane of ultimate performance where musical enjoyment no longer becomes a factor of sound quality, but rather personal taste. It really doesn't get much better than this no matter what you pay. The HD800 has better resolution, speed and spacial presentation - but can be a bit cold, analytical and unforgiving. The LCD-3 is arguably a higher-performing heaphone, with amazing resolution, extension and control, but in my humble opinion it can sound a little dry and laid-back compared to something like a HD650, Grado, Hifiman or D7000 which are more "fun" and energetic and with a more "forward" sound.
    So in short - the HD650 I think is truly great, not unbeatable in specific genres but an amazing allrounder. It should however be said that it only truly begins to show what it can do with top notch source and amplification - I wouldn't recommend driving this beauty with anything like a phone or Mp3 player due to its rather high impedance and revealing nature.
    Although "revaling" is also a relative term since they are infinitely more forgiving towards bad recodings than a HD800 or LCD-2/LCD-3. It should also be said that I do think they exhibit a slight veil (this eternal debate) but ONLY at low listening levels - so that those who find themselves always listening at very low volumes might want to also consider something along the lines of a grado reference headphone which are known for their "intimacy".
    All in all the HD650 is a superb headphone that comfortably matches, or beats, competitors at more than three times its price (not joking). A superb allrounder with a fun and energetic play-style, detailed but not too unforgiving - not to be overlooked! Seriously.
    Edit Sep 2016: I've increased these back to 5 stars again. After changing DAC and some other system tweaks I managed to elevate my HD650's to a yet another plane of performance. They just scale like crazy and completely unlike any other headphone in this price range with the exception of the HD600. Sorry for the confusion.
      volly, Dino2000, Pokemonn and 9 others like this.
    1. View previous replies...
    2. Willy 2 Streams
      Yup...these aren't the 'best' cans out there, but for most of us mud people, maybe the best 'real world' cans. For less than 5 clams ($275 for a mint of pr. of used 650's, & $199 for a Schiit Valhalla  on closeout), I feel I have a setup good enough to compare to my 'big rig', with no need to apologize for ANYthing!
      Willy 2 Streams, Dec 24, 2014
    3. spiderking31
      Tell me how you think this will sound....
      Marantz cd5004
      Moon-audio blue Dragon v3 cable
      Little dot mk3 tube amp
      Schiit bifrost DAC

      It's pretty damn impressive! These are a world class headphone!
      The right setup will prove me right
      spiderking31, Dec 24, 2014
    4. spiderking31
      I just wanted to share I'm currently using my HD650's with my Schiit Bifrost, and my little dot MK3 tube amp, with Yugoslavian 6HM5 driver tubes, and a Marantz CD5004 CD transport, and yes, two ears is on the money! The HD650's are still one of the best headphones out there currently. I've demoed the HD800's, and with my current setup, the detail, transparency, and accuracy IMHO, is equal to the HD800's! The difference? No matter what tubes I use, the HD800 has bigger soundstage. Period! I am saying this, as I have compared the two, side by side. Many of you may disagree, but my ears don't lie....so yes, it's personal preference honestly, on which sound signature you prefer....hope this really clarifies things ☺️☺️:blush::blush:
      spiderking31, Mar 23, 2015
  3. MrTechAgent
    Klassische Kopfhörer !
    Written by MrTechAgent
    Published Aug 13, 2014
    Pros - Sensational Excursion Factor , Exquisite Bass Extension , Almost perfect Mid-Range , Classic HE-60/90 Design , Potential Upper Treble Extension
    Cons - Spare Part Cost , Grainy Compared To Beyers and E-Stats, Could Be More Distant
    The one who started it all, the 650s was a unexpected purchase for me, I was 16 back then when I got the 650s , the only nice headphone I had was the v6 and a cheap Supra Sony but since I was building a nice PC at the time, I decided to invest in some Audio , wanted to get the best ....Initially I was gonna get the hd800, the price wasn't a issue since I had a huge budget but I decided to invest that elsewhere and got the 650s instead, these in one word are my "Favourite" Headphone, love them.
    To the sound , I always thought the 650s were a acquired taste until I got AKGs, little did I know what I had there
    The 650s signature is warm, rolled of yet detailed with a amazing bass extension, as far as dynamics go the only headphone I enjoyed the bass on was the Tesla 1, no other headphone has the 650 bass , control is just exceptional , I have test tones which determine the tightness and the 650s are off the charts , no headphone has performed like them , they also have a great excursion factor ...what that means is that they will never rattle, the membrane will never be over-driven, usually a lot of people call it SPL but not all high SPL headphones have a good excursion factor, usually excursion factor affects low frequencies, Output Impedance can minimize it but not eliminate it, more the control less the rattle but the 650s are extremely robust, these will never fail ...just sensational  
    Let's descend this time - 
    Treble - There is no doubt they are rolled off but ...I have heard the 650s on systems where the treble was right there, with all the detail and presence, would I call them veiled or muddy ...absolutely fuc**** not , they have all the detail, but this roll off can be good for some people who like a relaxed sound, they are just luscious and full bodied , they are never thin . As much as I love the treble they aren't grain-free when compared to Ultra-high end headphones, do I care, again absolutely  fuc**** not, musicality wins. 
    Mids - If you are considering buying these, I don't need to tell you about the 6XX mids, imagine a sound which encompasses you in it , that's what the 650s do when it comes to the Mid-Range , they have one of the best Mids I have heard, to this date I have to find a dynamic headphone which has the musicality in the Mid-Range like the 650s do, if you know a dynamic headphone which has what I'm looking for, let me know down in the comments. 
    Bass - The bass man ...I love the bass on these, the extension, tightness and overall sense of impact is top notch, as I said earlier the only dynamic headphone which impressed in the bass was the T1, now of course I know a Planar will kill it when it comes to sub-bass, that metal never rolls off, goes to down 20Hz with a flat line, but these are not a Planar so for a dynamic they are my top headphone, nothing touches the 650's extension and refinement. 
    Build and Comfort - 
    I think they are well put together, Senn is the Samsung of Headphones..all plastic of course.
    But as I said they are well put together and have the solidity I could expect from a decent headphone. The Headband is plastic with two spring steel rails attaching to the ends.
    They can easily be bended to make them clamp less if they bother you initially, I never found the clamp bothersome..at any rate natural break-in is the best of course, my two year old 650 compared to my brand new 600 have a significant difference.
    The Earpads are generously padded and are very comfortable, the 650 happens to be my top headphone for comfort, which is a goof thing of course.   
    Yes of course there are some negative things - 
    1) The dt880 is more refined in the treble, is much less grainy but again it doesn't have the other tonality edge and the excursion factor is not even close to the 650s. 
    2) The Soundstage is not that impressive, a lot of people use the classic term "3-Blob" I still don't know what that exactly means but hey ....The dt880-990 surpass the Senn in terms of Soundstage. 
    3) I wish the Spares weren't so expensive, for a earpad I could buy a entire headphone like a NVX XPT100 , not cool Senn !!!!!
    Some Random Notes - 
    1) Although these are 300Ohms I find them to be fairly easy to drive.
    2) The Stock cable can be easily made balanced.  
    3) I would recommend a nice OTL, I am using the Valhalla 2, in a perfect world I could choose SS, like a Violectric Stack or maybe a HDVD-800 but since it's not a perfect world I have to resort to Mid-Fi/HiFi amps which are fine, they still portray the emotion. 
    I will add more..this is all I can think of right now :p 
    So yeah, love them to death 
    I don't think my opinions will change until I get a 007 from STAX, till then I will enjoy the mids on my 650s 
    The comfort is excellent and so is everything else , if you want some of the best dynamics in the world get the 650s , they will surely make you smile , it doesn't matter if you have the best of the best setup, if it doesn't make you smile, it's a waste of money, take this analogy .....Upgrading a BMW 328i (F30) to make it faster than a RS5 is more fun than getting a RS5 , of course a RS5 is a RS5 but it will not make you smile as much as a upgraded F30 will, that's what the 650 is for me .....a must have headphone, take it easy folks, my Video Review will come in 2 days. 
    Video Review - 
      Essence STX, bpandbass, zanox and 5 others like this.
    1. View previous replies...
    2. AtrafCreez
      Thanks a lot !
      AtrafCreez, Sep 28, 2014
    3. Sennyboy
      Hello sir, thank you for the review.
      I see you mentioned them as grainy, I find them to be offensive and harsh, so is that grain or something else?
      Sennyboy, Mar 16, 2015
    4. huberd
      Compared to the HD-700 they sound distorted and have no treble air or sound stage. I think this is what a lot of people like about this headphone. 
      huberd, Feb 18, 2016
  4. soundstige
    Someone has to stop the cycle of abuse
    Written by soundstige
    Published Nov 23, 2015
    Pros - Comfy; Good-looking; Nice big sound stage
    Cons - The greatest overall disappointment I've ever experienced in audio devices
    I was so excited to finally get my hands on the holy grail of mid-range headphones, the Sennheiser HD650... or so I was lead to believe. 
    Facing facts, we're looking at a relic here. Whether that relic should be viewed through the lens of history as a valuable antique, or as a laughable remnant of a more primitive society, is the question that's up for debate. I vote for the latter. This headphone is soon to celebrate its thirteenth birthday, and in the meantime, the rest of the world has progressed unrelentingly. At one time, the HD650 may have had the chops to compete in the mid-range arena. It was probably viewed as a spacious, warm, bassy "upgrade" to its sterile cousin, the HD600. The fact that it could take a lot of energy from an amp and increase in overall speed and technical precision with the added energy was probably fuel for the fire for gear-collectors and upgrade-addicts.
    The problem is, when you try to polish a turd, you just get a shiny turd.
    Alright, I'll be as neutral as I can be starting now. This headphone is a good technical performer with speed, detail, sound stage spaciousness, instrument imaging, and overall can make anyone go "wow" once or twice in a listening session. For $499 MSRP, it had damn well better. Unfortunately, like a fireworks display, you just spent a ridiculous amount of money on something that made you go "ooooooOOOhhhh!" once and then ceased to impact your life in any way for the rest of eternity -- aside from the lightening of your wallet. The exaggerated warmth in the bass and completely lifeless, sucked-out mid range is as quick to take the wind out of your sails as a punch in the gut. I couldn't believe what I was hearing -- side by side, the HD650's little brother, the HD600, had so much more vibrancy and actually made you pay attention to the music. The HD600 had no problem effecting an extremely tight, natural-sounding bass note. The HD650, on the other hand, bloomed the same note to a point where it was impossible to believe they were built on the same stock. The voice (especially male voices) ability of the HD650 was a total downgrade. It literally put a frown on my face to hear my favorite music rendered in such a dull and distant manner, when retribution was only inches away in the form of the HD600. I played both through an excellent $250 amplifier and I refuse to be lead astray that, if only I put another $1000 into the amp chain, it would have started to sound good.
    Why do people like this headphone? Because it used to be the bassy/warm version of the best headphone going -- the HD600 -- and people like bass? I have no idea how this phone was Sennheiser's  flagship for so long. They completely turned the HD600 on its head and ended up with a monster. It took a pinch of the original technical prowess of the HD600, added a metric buttload of warmth, bloom, lack of intimacy, and sadness; and completely took away the charming and realistic voicing of the HD600.
    The biggest disappointment is the price and the previous flagship status of this headphone. If the HD650's MSRP was $199, it could get a hearty recommendation for people who crave warmth and don't really look for realistic sound. If they called it the HD500 it might have made sense. As it stands, it is a stain on the history of a solid company. Compared to literally every other mid-range headphone that I've tried that is more modern (Fidelio X2, HE400 to name two), the HD650 is an afterthought.
      Khazak, WriterHead, Hal X and 3 others like this.
    1. View previous replies...
    2. Dino2000
      I don't think there is anything wrong with @soundstige giving his reaction to the HD650. It is about 180 degrees from my feelings about this headphone, but that is how things go sometimes. 
      I think emphasizing the $499 MSRP could be misleading. The price of the HD650 (and HD600) fluctuate greatly. I don't think I have seen this headphone offered for $499 unless it is in a bundle/package deal or someone on ebay trying their luck at selling one at that price.
      Right now, on this page, the Amazon price displayed is $339.00 which is about what I paid for my first pair. Recently,I got a new pair (with a damaged box) from Amazon Warehouse Deals for $250.00.
      This is my second pair of HD650. I wanted to keep one pair stock and mod the second pair. The mod turned out very well. But it sounds like a different headphone. I guess that is the point of the mod. So now I have three favorite headphones: Sennheiser HD650, HD650 mod, and Fostex TH-X00 (Mahogany).
      Dino2000, Oct 19, 2016
    3. ObjectVoice
      Having just scored an old and thoroughly burned-in pair of HD650's which I've been listening with over the last week - and that after a straight year of pretty much continuous HD600 use - I feel as though I could make a comment here. I guess the comment is that HD650's certainly do seem to fare rather badly when you A&B them with 600's, yes - but also that that's not the whole story. When I got my pair I did this A&B-ing straight away and my initial reaction was not a million miles away from soundstige's final written review: I though, 'dear god, these are murky, what the hell's going on?'. I resolved to simply sell them and keep using the 600's. Then, instead, I sort of accidentally sat down and listened to some music through them, not comparing them to anything. I haven't really taken them off since then and, needless to say, I'm keeping them. At the moment, in fact, I'm not sure I can see myself picking up the 600's with much enthusiasm any time in the near future. It seems as though, to me at least, if you compare them, they come off worse - in comparison to 600's they sound muddy, veiled and dull - but if you just listen with them, if you don't A/B them - they just quietly take off and start to absolutely soar in ways which aren't terribly easy to quantify or indeed explain but which boil down to things like 'musicality', and 'enjoyability'. They make me, let me, help me simply enjoy the music like nothing else I've ever come across in headphones or IEM's or speakers - and that's with HD600's very much included (although they are a great headphone!). So yes: 'compare them only to themselves' seems to be my motto as regards HD650's.
      ObjectVoice, Oct 19, 2016
    4. sarang-i
      I thought just your preference is not afford to using hd650
      sarang-i, Nov 21, 2016
  5. Army-Firedawg
    The real king of price/quality
    Written by Army-Firedawg
    Published Nov 30, 2015
    Pros - Sound is absolutely unbeatable for the price. Scales better than most any headphone.
    Cons - Built quality & comfort have room for improvement
     The Sennheiser HD650. The #1 overall rated headphone on the most prestigious and well known personal audio website Head-Fi.org. So when I had the chance to trade my most expensive headphone I’ve ever purchased (at the time), the Beyerdynamic T70p, I was definitely interested to see just what everyone was talking about. So I’ve had these headphones for about 6 months now and have put a respectable amount of hours on them considering all the gear I’ve also reviewed during the time frame. So do I think these deserve such recognition? Let’s find out.
    The Opening Experience
        For those who’ve been following me rather on here or on my YouTube channel know that I brag on Sennheiser and their “handshake” they provide their customers with their products, and the HD650 is absolutely no exception. Upon opening the very well built box you’re greeted with a cut out foam plate that surround the outline of the headphones and presents them in a way that just screams ‘listen to me’.  The cord even has its own cut out that isn’t just twisted and placed but instead elegantly laid preventing any kinks or binds. Like all other premium Sennheiser products I’m experienced with, they provide the customer a firm and gratifying “handshake” that gives confidence in their products.
        At the time of this review the Sennheiser HD650 retails for $499.95 on the moon-audio website. So for $500 what do I think of the built quality in respects to other headphones in this relative price range? Well, acceptable is the answer to that. I firmly believe they could’ve been built a little more sturdy but I still have confidence that they’ll last for many years to come. The primary material used is plastic that I’d put as mid grade with aluminum consisting of the grills and the headband inners. A major fault to these I can foresee is that if these get pinched on something, something will snap. Rather it be the headband or driver cups, if one gets careless with these I feel these may break.
        And then there’s the cord, I really don’t have a positive stance on the cord. I don’t believe it’s the cheapest of cables they could’ve made but they seriously could have done a better job at making this feel like a premium cable to a premium product. Now it doesn’t tangle up I will give it that, I’ve never had to worry about knots, but I would still recommend opting in for a 3rd party upgrade cable.  
        Similar to the construction, I rate the comfort of these as acceptable. They provide a nice amount of clamping force that for me is just fine but I can see it being a little much for some. The sizing options are abundant and stay firm. The issue I have is the padding, for my taste, is a bit stiff. They do conform to my head well but it’s not like a warm marshmallow conforming to a stick but rather sand conforming to your hand as you push on it. Both are soft and pleasant but one is notably stiffer and grainier than the other.
        Finally here we are, arguably the most important aspect to an audio piece, the quality of its audio reproduction. Thus far the physical aspects of this headphone are merely acceptable, so, will it’s sound make up for its other faults?
        With an overwhelming as resounding, oh my goodness yes. The positional sound cues are BY FAR the best I’ve ever heard at not just this price range but multiples more. The soundstage is amazingly vast and the layering is breathtaking. While writing this I’m of course listening and I find myself very often drifting of with my eyes being forced closed to enjoy the enveloping sound sweeping over me like a raging wildfire. But for those who’re like myself who find beauty in the flame know that along with its power lies a pure, wild and unearthly beauty that can’t explained. It’s power, like that of the HD650, to draw one in is something that MUST be experienced. Finally before I break it down to the individual aspects there’s one last aspect to discuss and that’s the imaging, When these are paired with good equipment, and if you let them, they can transport you to the performance you choose. The imaging on these are wonderful, now I have heard better at this price point, but it’s nowhere near as riveting as the HD650’s other strengths.
        Also, the equipment I use is the following. Normally I do not post what I test them on but the HD650’s scale better than ANY headphone I have EVER tested regardless of the price.                          
    1. Garage1217- Project Horizon 3                                                           
      1. This amp. definitely gave the HD650 the best sound quality for what I personally enjoy. The warmth of the tube amp., as almost every forum you’ll search, definitely fits the HD650 best. BUT in attaining the warm and relaxing sound quality of the tube, I found that I did lose a little bit of accuracy more so than with my other headphones.
    2. Aune- X1s
      1. My current setup, this amp./dac combo is just stunning. It’s sonically accurate and really brings out the highlights of the HD650. I really have no complaints professionally but on a personal note, after I traded my PH3 I learned I do rather miss the warm sound the tube gave when I want to relax after a long work day.
      2. 20151023_231002_HDR.jpg
    3. LG- V10 (mobile phone w/ ESS Sabre DAC & amp. installed)
      1. I have only had this device for about a week so I will refrain from giving a professional review of its input to the HD650 other than it drove it very competently and sounded similar to the X1s but without the transparency. I still got the strengths mentioned above, just not to the same degree.
        The highs, the energy of the headphone. The ability of a headphone to produce the highest of notes without losing its energy and fading out or sounding weak, all while maintaining the accuracy of the original sound is quite difficult for many to attain. But the HD650 not only rises to that challenge, it meets it with a confident smile and a bring it on gesture. The HD650 produced every super peaking treble testing song I could think to throw at it and never so much as flinched. It took the sometimes ear piercing diva dance and gave her the accuracy and clarity that I’ve yet to hear on a headphone this price. To my ears the treble didn’t roll off but stayed consistent throughout the range.
        Another thing that those who follow me will know I pay particular attention to, for to me the mids are the most important thing for they represent the body and soul of the audio piece. The mids are the artists voice, feelings and emotions; and without good competency to reproduce this range a headphone is left sounding hollow and soulless which in turn leaves the listener feeling empty and without a fulfilling experience.
        In the case of the Sennheiser HD650 I find absolutely no faults in the mids. They give me a wonderful sense of warmth and liveliness to them that really makes way for a very soothing experience (especially with a tube amp.). I don’t think they’re forward that much, if at all, but they definitely stand out.
        The ‘umph’ or heartbeat of an audio piece. This is what is by far what’s in fashion today. Who can produce the deepest and hardest hitting, well my issue with this trend is it completely takes away from the rest of the recording. Often times overly bassy cans give me the image of pacman eating the rest of the audio notes, and that my friend is a no go. So do the HD650’s follow this trend, they are the #1 headphone remember?
        The answer is NO. Though these do have a bass emphasis it is very slight. The bass is fun and gives a nice touch of ‘the feels’ but I don’t have that bad of a note to the bass. And it’s only that the decay is a little drawn out when compared to the overall flawless presentation of the rest of its frequency spectrum.
        So in summary, do I believe these live up to being the #1 overall headphone ever made? Hmmmmm, price/quality ratio yes, absolutely by far. But I’m a firm believer that there honestly is no such thing as “best”.  However, Sennheiser absolutely knows what they are doing in the audio world and have proven they can compete with what the world calls the best with a headphone that is honestly, respectably affordable.
        Despite having some areas that do need some attention, I will whole heartedly put my name behind this product and recommend it to just about anyone to have one in their collection. I listen to these with everything under the moon from hard rock to bluegrass gospel and the HD650 consistently gives me a heartwarming, full and satisfied filling. Goes to show what can be produced when a company spends the majority of the product budget on sound quality over other unnecessary features.
    Till next time my friends. Until then check out my video Unboxing & Review!
      Wildcatsare1, Hal X, Flamess and 2 others like this.
    1. View previous replies...
    2. Uzuzu
      hd650 is pretty darn uncomfortable especially out of box. Once they loosen up or you bend them a bit they are very light and decent (like an 8/10 but still not the absolute best in comfort). Sound wise they destroy anything under 500.
      Uzuzu, Jun 19, 2016
    3. PedroVazquez53
      PedroVazquez53, Apr 6, 2017
    4. PedroVazquez53
      I don't know how to believe in comments when I see totally contradicted arguments from various people. Some in complete awe and rapture and others sayin this is "turd " (hey, I learned a new word here!). Honestly, do you people agree? My skepticism grows as I read and read the comments. For this and these reasons I try to add a little of reasoning for my purchases. It is best to make a survey of comments and then to decide. I have been about 10 years hearing and purchasing earbuds, big and small cans and this has left me only a few mis-puchases. But one thing is true, Sennheisers are not a holy grail. I own the HD800 but the HD599 sounds better to my ears. Grado PS1000e is a superb of a great h-phone. The Grado 325 that I purchased before was not so nice to my taste. Many good headphones lack bass, and I don't mean they have a low quantity, I mean NONE! I am a leftover from the hippie times and we loved that our equipments have a strong bass. I get a rapture every time I hear Hendrix' s concert in Sweden, there is surely a boomy, explosive, foot-rattling bass that makes me crazy. And so, equipments that lowers the bass are a no-go for me. Do you see why I am skeptical of many reports? Some people here criticize a h-phone here that many others dislike. We shold be careful in making our decisions. 
      And, no, I don' t sell my error purchases.
      PedroVazquez53, Apr 6, 2017
  6. bpandbass
    A Headphone That Everyone Must Hear
    Written by bpandbass
    Published Jan 20, 2015
    Pros - full and intimate mids, soft treble, scales excellently, detailed almost every part is replaceable, easy to run balanced, bass warmth
    Cons - slightly soft sounding, some grain in the treble, bass rolls off early in the sub bass, clamp, ear cups aren't deep enough
    I bought the HD650 after owning a number of equally good headphones, including the Beyerdynamic DT880 Pro, DT990 Pro, AKG K702 65th Anniversary, and AKG K612 Pro. I'd have to say that while the HD650 has many competitors nowadays that it didn't have when it debuted in 2003; especially lower than its MSRP of USD 500, it nonetheless holds its own and still offers qualities that many of them do not offer. 
    The HD650 is the most recent incarnation of its family of headphones. The basic driver design and headband design as far as I can tell dates back to the late 1980s-early 1990s with the HD545 and HD565. The design takes inspiration from Sennheiser's volume production version of their 16,000 (1991 money) dollar Orpheus HE-90 electrostatic flagship, the HE-60 "Baby Orpheus". In around 1993 Sennheiser launched the HD580 "Precision", in 1995, they launched the HD580 Jubilee Edition to celebrate their 50 year history. It had metal earcup grills instead of plastic ones, McLaren F1-esque carbon fiber furniture, and was sonically identical to the HD600, which was launched the following year in 1996. The HD600 had blueish granite furniture, and a sound comparatively warm and lush for its time while retaining a good level of neutrality. Then in 2003 came the HD650, retaining its position of Sennheiser's flagship headphone until the launch of the technical masterpiece, the HD800. The HD650 and HD600 are still sold together, with retail prices of 500 dollars and 400 dollars, respectively. While the HD600 earned itself the reputation of being the "Veiled Senn" due to its relatively warmer and more relaxed treble compared to similar flagships such as the Beyerdynamic DT990 and AKG K501, the HD650 has arguably been more deserving of the title. The HD650 was known by detractors for having a veiled, dark treble, a compressed soundstage, and a boosted, almost obese sounding mid bass; while the HD600 was the neutral of the two. However in 2010, Sennheiser retuned and updated the drivers on the HD650 to give it a less thick and a more energetic sound. The bass was lowered, the treble was raised, and the soundstage opened a bit more as a result. 2010 updated HD650s can be identified by their silver diaphragm shields, vs the black shields of the 2003 models. My HD650s are a 2014 model with the silver shields, and mine comes in a black black box and updated slip box, whereas the 2003-2013 pre and post retuning HD650s had a silver box and corrugated outer packaging slip box design. According to some unconfirmed rumors, the HD650 was retuned a second time to sound even more neutral for the 2014 model. I previously owned a 2010 HD650 with a silver box, and while there might have been more darkness and a bit more bass in that previous model, I can neither confirm nor deny this, as it may be a placebo or anecdote.
    Here are some pictures of the 650's family members. The images belong to their respective owners. Just click on the names of the headphones. 
    HE-60 "Baby Orpheus"
    HD565 "Ovation" 
    HD580 "Precision" 
    HD580 Jubilee
    HD650 (black driver)
    HD650 (silver driver)
    Build-wise, the HD650 is a timeless and no-frills modular design of mostly plastic and some metal. The outside headband, the bales and the ear cups are plastic, while the inner headband is spring steel and the outside earcup grill is some sort of metal mesh. The headphone can be disassembled by hand to its component parts and basically every part can be purchased from Sennheiser and replaced. That's something you don't see on many headphones today. The dual sided cable is detachable and has two pins for each side, making the headphone easy to run balanced. Just unplug the included cable and plug a balanced one in. The stock cable has decent enough shielding, is dual channeled, is about 10 feet long, and terminates to a 6.35 mm stereo plug with an excellent 6.35 to 3.5 mm adaptor cable that will not put strain on the 3.5 mm output jack of your source device. The cable doesn't tangle easily and doesn't retain kinks. I would have liked the y-splitter to have been a bit lower but that is all I have to complain about. I have not used a Venus Audio or Cardas Canare cable on the HD650, so I can neither confirm nor deny whether they are worth the purchase. My biggest complaint is that replacement ear pads are 60 dollars from Sennheiser, making them very expensive considering they have a tendency to flatten out after a couple of years. There are third party Chinese made ones on eBay for half the price though. 
    Comfort-wise, I didn't originally like the HD650. I found the spring steel headband, while extremely durable, made it a vice grip on my head, causing a headache. Another side effect of this clamp was that the pressure caused the velour ear pads to prematurely collapse, leading to my ears pressing against the foam driver disks, making them red hot and sore. I find that the HD650 doesn't have deep enough ear pads, and the arey fairly narrow, causing the edges of the pads to rest on the backs of my ears. I found that stretching the headband out (by taking the ear pads off and placing the HD650 over a speaker cabinet overnight) lessened the clamp, and rotating the cup pivots to put more clamp on my temples made the ear pads keep their shape, and now my ears are no longer pressing against the drivers. I find this to be a lot of fiddle work just to make a headphone comfortable enough. Removing the foam driver covers does give a little more depth, though it makes the sound a little brighter. This might be desirable for some people though.
    Personally I would have liked Sennheiser to have stuffed the HD650 ear pads with a denser material like gel or double memory foam to keep the shape for longer periods of time.
    The hand band is a nylon-type material and has plenty of padding. There is an indentation in the middle of the pad so you can rest the headphone on a stand and not dent the padding, and for people with a Sagittal rest in the middle of their heads, this can provide a little more comfort as the headband isn't hanging up on the ridge and causing aches from hot spots.  
    As amplification goes, the Sennheiser HD650 is a headphone like prefers a powerful yet somewhat lush sounding amplifier or tubes on an amplifier. Though it is 300 ohms, the HD650 is quite a sensitive headphone, which means one will not have to crank up the gain on an amplifier to get a satisfying listening level, and will not hear as much amplifier strain. I was able to listen to the HD650 at perfectly satisfying listening levels from the headphone jack on my iPhone 5, and it also sounded good on the FiiO E07K portable amp and DAC I owned. The HD650 is more performance hungry than gain hungry. The better the amp to feed it power, the better it will sound. The HD650 isn't as system-picky as AKG headphones like the K702 or K712 Pro, so it is easier to attain a better sounding synergy with. The HD650 DOES prefer an amp that has a powerful sound to it, so solid state or hybrid amps are more preferable. All-tube amps such as the Woo Audio WA6, WA7 Fireflies and WA6-SE are supposed to sound excellent with the HD650 due to their transparency and power while still being refined. Higher end solid state amps such as the Violectric HPA-V200, Burson Audio Soloist and Conductor, and Meridian Audio Prime are also said to be great with the HD650.
    I personally use my Schiit Audio Lyr 2, which is a powerful sounding yet thick and refined hybrid headphone amplifier with the HD650s. It still doesn't make them bass cannons or treble monsters, as the HD650 will tend to keep its softer sound regardless, but on low gain it has plenty of power and refinement. On high gain, however, the Lyr 2 becomes a bit too gain happy and aggressive with its stock tubes on the HD650, making the midrange and lower treble too forward and splashy sounding. Low gain is the better setting and is more controlled sounding with the gain-sensitive HD650s.
    Now for sound: 
    The HD650 was and still remains unique, as unlike most Germanic headphones, and more similar to Japanese headphones, its sound is definitely tuned by the ear. And what I mean by this is that rather than being tuned to dig from the lowest to highest frequency, HD650's sound is slightly n-shaped with an intimate midrange, a polite treble and warm bass. 
    Treble-wise, the HD650 has very good extension with some elevation in the very top end. I don't consider it to have rolled off treble like newer Sony headphones have, though it's not a highly dynamic and front stage treble like on some Beyerdynamic headphones. It's present, yet subtle. The lack of a ton of lower to mid treble DOES make the HD650 a little less than perfect for orchestral music due to less  airiness, but it still has enough texture for acoustic music. That said, the HD650 will still show sibilances and some grain with poorly recorded music. Extremely sibilant tracks, especially on lower powered systems that may strain somewhat, will still have some harshness, even on the HD650, and the slight graininess to the lower treble can add to this. But it's infrequent enough that I don't consider this to be a deal breaker in any way.
    Mids are the true forté for the HD650. The mids are fairly intimate and forward from the lower midrange to the upper midrange. After listening to the HD650s, many other headphones will often sound "hollow" or "scooped", with some withdrawal or midrange recession in comparison. Female and male singers alike sound equally strong, and instruments have a natural timbre to them. People who love a front and center midrange without the added brightness of the treble will love the HD650. There is little to fault. As I mentioned in the amplification section, though, watch out for amplifiers that are overly forward sounding, as they can make the mid-forward HD650 harsh, brash or blarey. Headphone amplifiers and tubes with a neutral to somewhat soft midrange work best with the HD650. 
    Bass is an interesting point for the HD650s=, and along with treble, is responsible for the HD650's highly enjoyable midrange. Upper to mid bass notes are forward, textured and extremely present on the HD650. It does not have that overly "groovy" sounding bass like the AKG K240 MKII/Studio due to a highly boosted upper bass, but its bass is more upper and mid-focused than say, a Beyerdynamic DT990. This creates the more filled-in sound of the HD650's mid range. Wind instruments and bass guitars are excellent on the HD650. The mid bass has some bloom to it, and while not the tightest, lends well to drums, and synthesized mid bass with house, trance and dance music. The sub bass, however, is the HD650's weakest point in its low frequencies, as it rolls off after the lower mids. This makes it not the best headphone for genres that need a more filled in or neutral low end such as hip-hop and drum and bass, or genres with powerful drumming such as Japanese Taiko drums. Due to the lack of low end bass, but extra upper to mid bass, the HD650 has a somewhat soft or liquid sound to it. The extra upper bass gives the HD650's bass timbre a more chesty or "wooden" sound that lends well to African, Arabian and South Asian genres of music. 
    Soundstage, while being good with depth, lacks the layering and precise imaging of other headphones. This gives the HD650 that characteristic "3-blob" dimension to its imaging. You hear music from outwards, up and down, but instrument placing and layering is not as distinct. I would say that for symphonic and orchestral music this is probably the biggest weakness of the HD650.
    There are a number of alternatives to the HD650 one might wish to consider instead. The obvious one is its older but still produced sibling, the HD600. The two are basically the same headphone design, with the finish of the plastic being different color schemes, the HD600 being a little less expensive, different headband padding, and the HD600 cable being thinner and terminating to a 3.5 mm connector. Both have a similar, mid-prominent lushness to them, but the HD600 gives up some bass energy and trades it for a bit more treble, which gives it a more acoustic and orchestral-friendly sound somewhat closer to neutral. The two from what I heard are similar enough that owning both isn't worthwhile unless collecting is an endeavor. 
    The AKG K702, Q701, and K701 are often compared to the HD650, but they are lean and bright enough that they should be compared more to the HD600 than to the HD650. I owned a Q701, and it is a completely different sounding headphone, with deeper but harder ear pads, lesser grip but a bumpy headband, a zazzy upper midrange, bright lower to mid treble, tight and neutral though dry bass and a soundstage with outstanding airiness, layering, texture, dimension and imaging that made the headphone excellent for jazz, orchestral and symphony, and acoustic music. Though the strong upper midrange made the Q701 a bit too aggressive at anything above moderate listening volumes for trumpets and saxophones, and women singers who sing at high and loud octaves (e.g. Adele, Rebecca Ferguson).
    A fairer comparison would be the newer K712 Pro, or the K702 65th Anniversary Edition, as their sound is more comparable to the HD650. I have compared the HD650 to my brand new AKG K7XX Massdrop Edition that is tuned to sound similar to both the K702 Annie and the K712. Compared to the HD650, the K7XX is more comfortable and less tight fitting. The K7XX has more treble and more sub bass, while being a little more withdrawn in the mids than the HD650. The K7XX like most AKGs is highly source-dependent. It will sound like garbage on garbage recordings, and it will sound sibilant on poorly matched systems, unlike the more source-forgiving HD650. I will be writing a more detailed comparison review of the K7XX and the HD650, so more comparisons will be found there. 
    The closest Beyerdynamic for comparison is the DT990, as the DT880 is flatter and more comparable to the HD600. The DT990 Pro is less expensive than the HD650, and has a prominent u-shape to its sound, with very dynamic and bright treble, deeper and more rumbling sub bass and mid bass, a wider and more open soundstage, and a more scooped midrange. The HD650 is definitely the softer and more laid back of the two, and the DT990 the funner, more exciting sound. Both make excellent complements to one another for different listening moods. The DT990 Premium models are a little more neutral, with the DT990 Premium 600 ohm having the smoothest treble of the 990 models, and being the closest competitor to the HD650 due to its refinement. 
    In the planar range, Hifiman's HE400i is priced at the same 500 dollar mark as the HD650. From what I have read, the HE400i has a strong clamping force, is somewhat heavier, has deeper extending and tighter bass, and the treble is more energetic. 
    Another option to consider is the recently released Philips Fidelio X2, which according to reviews from owners, has a tighter and more present low end than the HD650, a more neutral treble, and a wider soundstage. 
    While the HD650 at times can be soft sounding and isn't the most comfortable for long listening sessions, it nonetheless will remain a staple headphone in my fleet. I'm interested in seeing what upgrades to DACs and better tubes will do to improve refinement. 
    1. Willy 2 Streams
      Excellent review, thanks! Far as the head clamping goes, I agree. I swapped out the clamp set from my old 580's to my 650 earcups, and got a much more comfortable set up now! You hold the two together, you can see that the 580 clamp is about 5mm wider than my 650's. Whether this is by design, or because my big cabeza stretched out the 580's over the years, I'm not sure...but it works!
      Willy 2 Streams, Jan 21, 2015
    2. bpandbass
      Thanks for commenting. I'm actually interested in finding an HD580. I might make a nice vintage complement. I have a friend who has the HD580, silver driver HD650 and HD650, and he mentioned the HD580 not only having thicker, deeper ear pads, but also having less clamping force. Personally I'm trying to look for a better set of tubes for my Lyr 2 since the stock ones tend to lack a little power at that 500 ohm mid bass swing, and tend to make the HD650 sound a little dull there. 
      bpandbass, Jan 21, 2015
  7. IPoopFrootLoops
    You can't go wrong with this timeless classic
    Written by IPoopFrootLoops
    Published Jan 14, 2014
    Pros - Smooth, sweet, loving sound. Comfortable.
    Cons - Nothing to me
    I am by no means experienced in this field. I am a poor 18 year old who spent a lot of time dishwashing in order to support his unreasonable obsession with great sound.
    When searching for my perfect headphone, I narrowed down my choices to two headphones: The Sennheiser HD650 and the HifiMan He-400. I originally picked up the HifiMan He-400s and spent a month with them before parting. They sounded great and were built like a tank, but I knew that the ortho sound wasn't for me. The sound was too fatiguing, and this was exaggerated by the poor comfort that they provided.
    My next step, obviously, was to pick up the Sennheisers. As soon as i put them on my head, i knew these were right for me. Comfort was above (my admittedly high) expectations. I could sleep with these babys on, and the sound exceeds their comfort. The smooth, romantic sound woes me in every time. These are the cans that you could listen to for days. 
    The Sennheisers gave me what I ultimately wanted. And that was to have sonic nirvana poured into my ears for hours on end. I can slip these on and do my homework without being interrupted or l can critically listen to some vinyl.
      TwoEars, SaLX, Pokemonn and 2 others like this.
    1. View previous replies...
    2. Juandv9307
      try a cheap aune t1, they sound really good togheter.
      Juandv9307, Apr 18, 2014
    3. TwoEars
      You have chosen... wisely...
      (Bonus points for knowing the movie without googling it! :wink:
      TwoEars, Nov 7, 2015
    4. Linn9000
      Orthos fatiguing? what crazy talk is this...
      Linn9000, Sep 11, 2016
  8. grizzlybeast
    Massdrop x Sennheiser HD 6XX Headphones / Sennheiser HD650 Tribute
    Written by grizzlybeast
    Published Nov 6, 2016
    Pros - Tonality, Price, Audio quality
    Cons - Needs to be modded and/or amp paired correctly for the best performance


    Massdrop x Sennheiser HD 6XX Headphones


    Let me start of by saying this is not what I would call a real review. This is more like a Tribute to a headphone that, while controversial, has been and is irrevocably deemed a classic reference headphone. Not just my posts but many reviews have referred to it or used as a headphone to compare it to.  The disclaimer is that I have known about this release for a while now and have been sent  a pair. Even so, given my long relationship with several pairs of HD650's I have no reason to shill these along side the fact that they will sell out very quickly anyhow. 

    Tribute / Appreciation
    I have had 6 pairs myself with the HD6XX being my seventh pair. I have bought and sold this headphones for a myriad of reasons. It always seems to end back up in my stable because I have come to know it as consistently more spot on in tonality than just about every headphone I have heard. Some of the reasons for me selling them so many times was because I sold it them to help fund a new piece of gear or was in a honeymoon phase of something new that outperformed it in a particular attribute. Then later when I knew I had lost my bearings on how things were supposed to sound I would repurchase it again. 
    Why were people asking if the Focal Elear was the super 650 they have always wanted?
    Why do people ask if the the new ZMF Atticus are the closed back HD650's they have been longing for?
    Why when the Audeze LCD 2 was released was it called the planar magnetic super HD650?
    Could it be because  they are more expensive headphones with a darker than neutral signature? Well if so then why is it much less popular for someone to ask for a super Beyerdynamic DT880? or a super Hifiman HE-500 even? Such an opinionated and categorically diverse thing as music can't possibly have one tuning unanimously crowned as champion can it? Uhhh... well if it did, love it or hate it, like it or leave it, buy it or sell it, the Sennheiser HD650(or even HD600) is unequivocally the closest thing to having that crown as far as headphones go. Sure the HD800 is technically better but just because the prince is younger, brighter,  and faster doesn't make him king. The king would have to die first and as far as that goes the HD650 is apparently immortal. Relatively, the 600 is the more even tempered queen right by his side. 
    Let's take a look around the web shall we:
    This is without searching specifically for the HD650 but rather "best reference open back headphone". Some have their preferences but there is one consistently present. 

    Studio / Professional usage:


    Thought this one was interesting  on the 600

    A quote from one of all of our favorite sources:
    - "Well...they've changed their tune a bit with the just announced Massdrop Sennheiser HD 6XX because in this case they didn't change the headphone's tuning it at all. (Measurements show the HD 6XX and HD 650 essentially identical within measurement errors.) No, there is really no reason for them to re-tune the Sennheiser HD 650. They've done their homework. They know that this is widely considered amongst headphone enthusiasts the standard by which all other headphones are compared. I've reviewed them and love them. Yes, there are better sounding high-end headphones, but none deliver the price/performance ratio of this icon."

    Read more at http://www.innerfidelity.com/content/if-it-aint-brokethe-massdrop-sennheiser-hd-6xx#qLHs1kALCTYimQT2.99

    Looks / Comfort / Build

    1. Ear pads out of the box are slightly firm but deep and create a healthy distance between the driver and the ear.
    2. The ergonomics have proven to be timeless and are a succession of previous designs used by Sennheiser
    3. I won't mention the names of other manufacturers but I dare you to find a 650 that was delivered broken through shipping. If it does happen it is a lot more rare than with ____. You fill in the blank. 
    4. The clamp pressure can be a bit imposing out of the box. 


    1. Very dynamic and punchy without sounding aggressive. (Amp dependent so results may vary)
    2. Good Microdynamics
    3. Great Details
    4. Non Fatiguing
    5. A chameleon with down stream and upstream gear so heavily manipulatable. 
    6. The treble can be grainy and/ or slightly dark to some but is smooth in balance with good resolution and extension
    7. Wonderful midrange from the lower midrange all the way through to the lower treble
    8. The bass is a bit rounded with a slight mid bass elevation for healthy kick drums
    9. The sub bass can sound ill extended at times but for the most part is capable of handling even sub bass saturated genres(yet not effortlessly)
    10. Can be modded to have very tight and controlled bass, even better clarity and cleanliness (very easy to mod)
    11. Can sometimes sound slow and veiled to some when not properly amped or in stock version. 
    12. Very scalable and reportedly becomes competitive with Top of the Line headphones when used with uber quality amplification
    13. Soundstage can sound narrow to some but maintains adequate depth and layering for  relatively deep insight into recordings. However, in the grand scheme of open back headphones it usually sounds less wide and is said to have a small soundstage. Again, amping really helps the depth of soundstage increase. 
    14. Though some believe it is a darker sounding headphone, It really works well with OTL tube amps and is revealing of system changes and improvements. 




    There is a coin mod to be done by using a quarter to cut out a portion of the foam covering the drive; a removal of the back cover and adding Dynamat in specific places; and a  removal of  the foam from the back of the driver. (please put the cover back on). Be sure to scour the internet for more specific instructions. Rest assure that these mods are all VERY VERY easy. There are all sorts of mods..even some to make it brighter. 
    The mods can give the following improvements:
    1. Increase of bass control and perceived reach
    2. More satisfyingly visceral bass slam
    3. Increased speed
    4. Faster Decay
    5. Crisper and livelier sound
    6. More openness and clarity
    There may be more improvements and mods to do so this is by no means exhaustive, and again just a little boost to get you started. I personally heard the HD6XX and thought that they changed the tuning until measurements confirmed that they actually are the same HD650. I had become acclimated to the tuning of my modded 650 so upon arrival I was very disappointed with the stock bass in comparison as well as felt the headphone sounded slower. For 199 the HD6XX is a no brainer and a modded 650/6XX one will become legend if it already isn't by now...the stock version most definitely is. 


    Amps I have heard the 650 on and personal rankings (of the pairings not the amps themselves)

    • Apex Teton
    • Trafomatic Head 2
    • Ifi iCan Pro 
    • Bottle head Crack and Speedball upgrade/ Schiit Jotunheim 
    • Cayin iHA-6 
    • Airist Audio Heron
    • Nuprime HPA-9 (a bit dark for it but good body)
    • NFB - 28


     HD6XX VS HD650

    The aesthetics and accessories are the only thing to compare here really. But eh..why not?
    1. The 650 comes with a longer cable terminated in XLR and an adapter for 1/8 jacks
    2. The 6XX comes with a shorter cable terminated in 1/8 inch and has a 1.4 inch adapter. Why... possibly to be more compatible with portable amplification and transportable systems. Because by no means is it competitive with 'Beats' since people with those headphones most likely wont be using any amplifier
    3. The 650 will still have the more luxurious or classy paint job as the 6XX is a plain midnight blue that can look black depending on the lighting used. 
    4. Through and through the build quality is the same and they measure the same as well 


    When I started the "Massdrop Collaborations...What If?" thread almost a year ago I expressed how my choice would be for a 650 collaboration. While not quite black, I am sure Sennheiser had their reasons and I am very happy that this headphone is available at price lower than I have ever paid even for a used pair. These are good times to be an audio enthusiast. Not to mention the most recent release of the Schiit Jotenheim, now Music lovers can have a system I used to dream about for a lot less than a new 650 and Bottlehead Crack w/ Speedball upgrade would have costed you back then. I feel very humbled to have been able to witness this re-launching of an industry legend and know tons more people will be smiling from ear to ear as they listen to music "the right way" lol.. just playing anyway you choose is the right way for you.
    1. mynameisdmoon
      Thanks for the great review. 
      I want to pick your brains regarding the Jotunheim vs Bottlehead Crack+Speedball. Are they really that comparable? The consensus seems that with proper tubes, Crack + Speedball is the best setup you can get for the HD650/6xx but it's also rather costly. While I can't imagine the Jotunheim is on par with it, are they really that close in sound that you'd rank them together?
      I'm curious as I also received my HD6xx and thought about upgrading my amp in a few months from my simple magni 2 as they seem to be holding these back.
      mynameisdmoon, Dec 21, 2016
  9. Music Path
    Classic ! Not much to say ! Genre master ! Surrounded by strange, years long myths... End review to clarify things. (White driver version >2012)
    Written by Music Path
    Published Jul 13, 2015
    Pros - Great Sound overall! Durable! Replacement parts! Great price today!
    Cons - Not found any big drawbacks! For the price i payed no complains. Ok, a bit more subass would be cool.
    There is not much to say. Only making this review to help indecided people, and contribute to the forum as a member who was helped too.
    Bought this can second hand for 225 Eur. Practicly new and great price for what it is, i must say.
    I'm no audio engineer, so i will keep things simple. Not a native english speaker, so my english may have some mistakes. It's my first review.
    Hope you enjoy. [​IMG]
    My history: 
    Started not long ago. I was a former basshead, until i discovered the older momentum and open backs. Till then i bought average gear, some i found disapointing. 
    My best basshead cans are the Sony XBA-H3, but i get full of sticking things in my ear. So i started searching and found this forum.
    Which led me to the momentum as i refered, fidelio x2 and hd650. Amps i'm using fiio e12 and ifi idsd micro.
    Sound Caracteristics:
    Bass: It's well defined, extends well and has quite impact. Cool dry bass and transparent. A tad bit subass would better, but i think i still will find a solution for it. [​IMG]
    Mids: Great midrange, nice vocals, not much to say.
    Treble: Not veiled, very detailed and effortless. Not fatiguing. Extended.
    Soundstage: Quite big, bigger then on the Fidelio X2 IMO, which is claimed to have a big soundstage comparable to dt880 and dt990 or even better.
    And now about the myths.[​IMG]
    Veiled -
    Probably one of the biggest myths sorrounding this cans, defenitly to disagree in my experience. Might be true for the older version, but not this one.
    For me they have better highs then momentum, nad 50, fidelio x2, sonys current lines as far i noticed. And they never complain about veiled sound on those.
    The 650 might have one of the best highs around, well detailed and musical. Not easy to achieve. Create bright phones is easier, like boosting bass freq.
    Its a unique phone with unique highs. They say they sound dark. If it is, its in a cool way.[​IMG]
    PS: I'm in my twienties, i dont need that much treble, but you dont lose that much treble sensetivity with age... [​IMG]
    Loads of power-
    When i started  to read this forum, the amp i thought i needed for HD650:
    What i actually needed:
    The reason why i bought the iidsd micro, which has an 4000mW headamp. 3 main gain. The ifi audio engineers sad to use the lowest one: Eco mode (>250 mW @ 16 Ohm)
    I was convinced at least i needed normal or turbo mode (5.5V/1,900 mW @ 16 Ohm to 10.0V/4,000 mW @ 16 Ohm)
    Guess what!? The first one had the best sound. Lossy and lossless. I had to put it around 3o clock for ideal performance (acording to ifi too) It's not about power but to find the sweet spot. [​IMG]
    Original cable somehow creates a botleneck to the sound -
    Some tried to get the veil disapear with other cables like the senns cable was the fault. I still use the originall cable, and get a clear defined sound.
    It would be nonsense and desrespect to its clients if that would be the case. We are talking about a 13 years sucessfull HP here. It would be wierd. [​IMG]
    Bloated/Undefined Bass - 
    Doesnt seem to be true either, it doesnt bleed anywhere. The only thing needed is a bit more subass.
    Since the bass is defined it seems fast enough for all genres. And i m using extra bass function of the idsd.
    Small Soundstage-
    Some say big, some say a bit claustrofobic... Well i say big andd not surprisingly, because it has good treble. Sometimes it feels more speaker like. Not saying its like a HD800, but its big and envolving.
    When i was amping them at norma/turbo mode it didnt was that big. So again don't overamp.
    Not suited for fun genres, it makes you sleep-
    I'm a big fan of electronic and rytmic genres, and the HD650 goes very well for those. Dark sound gives sometimes an undergound feeling to some electronic tracks.
    Will make a list of test tracks, and make an evaluation from 1-10 for the permance of the HD650 on those tracks:
    Nu Disco:
    [​IMG]-9.5   [​IMG]-9
    [​IMG]-9.5 [​IMG]-10
    Great midrange which is needed in this tracks.
    Great bass impact, just a bit subass needed... Speed ok. Its more about groove.
    UK Garage House/ Future Bass:
    [​IMG]-7.5 [​IMG]-8.5
    [​IMG]-5.5 This is a dificult genre, lots of subass... failed the last emotion.
    But the rest ok, great underground dark urban sound feelings.
    Progressive House:
    Senn delivers here, this tipe of genre you need impact bass, rythm and stage. Delivers all three.
    Funky House/ Funk House (Lots of groove & vocals):

    [​IMG]-9 [​IMG]-10
    This genre has speed, vocals, rythm, highs and its ok for HD650.
    Classic House/ Acid House:
    [​IMG]-9 [​IMG]-10
    Looks they made it for this genre, great underground feeling due its darker sound, but great soundstage, transparent bass, great vocals.

    Tech House:
    Perfect! No lack speed! Great club sound![​IMG] How can you fall asleep !?xD
    Deep House:
    [​IMG]-8  Deep House is that genre you listen you in bars and some mistake it
    with "elevator music"... [​IMG] [​IMG]. Its slow 90bpm, but needs atmosfere, and 650 delivers it. Enough bass, no veil.

    Chill Wave:
    [​IMG]-9 [​IMG]-9
    [​IMG]-10 [​IMG]-10
    This genre has a lot of highs. No problem for the no veiled 650 IMO. Great detail.
    Electro House: (They call it EDM to):
    [​IMG]-9  [​IMG]-10
    [​IMG]-10 [​IMG]-9

    This is not a easy genre, quite some speed, lots of changes of rythm, big stage but its enganging for me.

    Trance 90s,00s:

    [​IMG]-8 [​IMG]-8
    [​IMG]-8 [​IMG]-9
    Sounds ok for me in trance.
    [​IMG]-10 [​IMG]-9.5
    Delivers well in one of the more dificult genres. A bit subass laking mabie.

    Instrumental ​Hip Hop:

    And there is much more... :)
    Dont listen much Dubstep or DnB so i cant pronounce about it.
    About other genres i think its alot been talked around about the performance of 650s.

    Hope you enjoyed reading or listening.

    At the end i'm only doing this because:
    117fd195-4389-4b70-9871-6801e43a6d16.jpg   [​IMG] 
    1. View previous replies...
    2. DDDamian
      Quite the playlist! Nice review, and a good idea to call out the myths around the 650. The only things I question is the description of the soundstage as wide and the speed comments.
      Otherwise, great job!
      DDDamian, Jul 13, 2015
    3. ftfoi
      Can't really say anything about these cans, I've got some Sennheiser's that I use for my PC and happy with them so I would probably be happy with these for stereo use also.
      But what I WANT to thank you for is the great amount of music suggestions. :) I'm also very much into that kind of music and I enjoyed many of the tracks you posted here.
      ftfoi, Aug 2, 2015
    4. guywithphones
      I don't know if anyone mentioned this, but try out di dot fm. Apparently they axed the forums for their new system.
      guywithphones, Nov 7, 2015
  10. clams
    Musical reference
    Written by clams
    Published Jun 29, 2011
    The Sennheiser HD650 is a great pair of headphones. Makes a great complement to airier headphones.
    1. DraconiaN
      The HD650 which i also own have indeed a tendency to sound "dark" with a cheaper headphone amp...i've had the same sound issues with the stock JRC OpAmp ICs into my Xonar Essence STX Setup...after changing them to LME49720NA, it sounded clearly like a complete different headphone...much better in all ways, more crisp highs, mids...and not so strong bass, but i've found it well balanced, will give the LME49990 OpAmp a try...hopefully for the better sound experience. :wink:
      DraconiaN, Jan 22, 2012
    2. szoze
      I don't agree these headphones have ability to give "great" texture to strings and woodwind. Those instruments sound in fact muted without higher harmonics and "bite". In my ears AKG K70x are much better in this department.
      szoze, Sep 23, 2012