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Sennheiser HD 650 Headphones

  1. The Monkey
    Still Among the Best
    Written by The Monkey
    Published May 9, 2010
    Pros - Great bass, scales well
    Cons - 3-blob soundstage
    A pair of headphones I wish I kept.  Great bass, excellent highs with the right equipment.  Scales with the best of equipment.  Everyone should own a pair at least once.  
  2. kostalex
    Hi-Fi bargain even at a full price
    Written by kostalex
    Published May 15, 2010
    Pros - seductive vocals, overall SQ, relaxing signature combined with a good speed
    Cons - soundstage is not large enough, clamping force is incomfotable for big heads
    There are some who say HD650 demands for expensive amps. I disagree, HD650 is great with lesser sources/amps and excellent with higher gear. From Hi-Fi cans I tried (DT990, DT880, HD600, AD2000, AD1000PRM, W5000, D2000, K701), HD650 is less finicky to pair, while it is on top of this heap in terms of SQ. It is also moderatley priced for Hi-Fi can, half of those mentioned above are more expensive. Add that I bought mine barely used for $150, so it is a keeper for me.
    Soundstage becomes bigger with better amps, like WooAudio 3 with upgraded tubes. Clamping force can be reduced, if you store HD650 with some spreader for headband. I recommend not to store it on a things like basketball, since you will flatten the earpads.
    1. Heidegger
      The best way to reduce clamping force is to extend the headband all the way out and bend the metal part a few times until you achieve comfort. If you loosen them too much, you can bend the metal part in to tighten. Whatever you do, DO NOT BEND THE PLASTIC. Only the flexible metal part of the bridge should be bent. If you do a search here on headfi, you'll find more detailed instructions on how to do it. I followed the directions and my 650 is much more comfortable now.
      Heidegger, Apr 15, 2011
    2. Heidegger
      By the way, I noticed a sound improvement when I upgraded my amp to the Lehmann BCL. I especially noticed more depth to the soundstage.
      Heidegger, Apr 15, 2011
  3. dreamwhisper
    Reference Quality
    Written by dreamwhisper
    Published May 19, 2010
    Pros - Warm sound signature, detailed, non-fatiguing
    Cons - 3-blob soundstage, clamping a little strong at first
    The HD650's don't do anything really wrong.
    They have a natural sound signature and slightly elevated midbass that is easy on the ear (non-fatiguing).
    Most people will find that they appreciate their sound.
    They are not the final word in transparency and speed, but they are advanced enough technically to allow them to be true to the source material, offering an excellent sonic window into the music.
    This neutrality allows them to be used for reference purposes; as a studio headphone mixes done on them translate well to monitors.
    Similarly, they sound great with all genres, and don't dominate any particular one.
    For a beginner head-fi'er, HD650's paired with a <$500 SS amp and a cheap DAC might be the last headphone rig you ever need.
    Inversely, the HD650 scales very well with upgrades, sounding best to these ears with a powerful tube amp.
    However, If you don't like the sound of these phones on first (amped) listen, don't try change the sound signature with cable upgrades because the differences are relatively subtle.
      sonofpfunk and pressureworld like this.
    1. View previous replies...
    2. Nirvana Woman
      The #3 popular headphones on the site, and the first review starts with "The HD650's don't do anything really wrong."
      Kind of coincidental I guess. I wouldn't buy anything qualified like that though...
      Nirvana Woman, Oct 15, 2012
    3. siavash
      i have ordered a HD650 online ,but i have not got it yet
      i am looking for a good portable amplifier,which is compatible with my headphone
      what do you think would be the best choice for my headphone?
      would Electric Avenues PA2V2 make a good pair with my HD650?
      siavash, Nov 20, 2014
    4. dreamwhisper
      I would avoid powering these with a portable amp.
      Consider them the last headphones you will ever need, and spend appropriately.
      I have been out of the amplification loop for a while, but if I were to buy an amp I would look at schiit audio.
      Also,  the Objective 2 amp, or whatever, has a lot of hype on head-fi, and runs on batteries. I guess that means it's portable?
      Like I say, I'm not the person to ask.
      Congrats though, I wish I kept these headphones, I have often thought about buying them again.
      dreamwhisper, Nov 20, 2014
  4. Lunatique
    The Gentle Workhorse
    Written by Lunatique
    Published May 30, 2010
    Pros - Smooth, non-fatiguing sound, comfortable, well-balanced sonic signature
    Cons - Sub-bass could be deeper, treble could be slightly more airy
    My first Sennheiser was the HD555, which was a real gem for its price bracket, and then when it broke, I replaced it with the HD600. I immediately exchanged it for the HD650 as I found the HD600 to sound so similar to the HD555 (just a little bit more treble mainly) that the price difference wasn't justified. The HD650 is very similar to the HD600, but with a bit more weight in the bass, and a slightly smoother sound overall. But in any case, these upgrades are all diminishing returns, as the HD555 really is excellent already.
    The HD650's clamping force is strongest of the three, but it's still comfortable enough that I often forget to take them off after I was done listening to something. The velour earcups are always the most comfortable to me compared to leather, pleather, or foam.
    In terms of looks, the Sennheiser are probably lagging behind all the competitors, looking kind of drab and boring, while the HD800 takes things to the opposite extreme, looking like some science-fiction head gear.
    I quite like the Sennheiser sonic signaure, which many people refer to as being relaxed, or veiled. I think of it as being very smooth and non-offensive. The treble and upper mids never get fatiguing or too bright, and the overall tonal balance is very good, with nothing sticking out or recessed in any of the frequency ranges. The sub-bass rolls off around 30Hz and I wish the HD650 had more extended sub-bass and weight, since that's what it needs in order to sound like a full-range speaker system. The Audio-Technica ATH-M50, ES-10, and Denon AH-D7000 all do this very well--sounding like there's a subwoofer in the headphones. The treble of the Sennheiser is nice and smooth and articulate, but it seems to lack just a little bit of that airiness that audiophiles really love.
    Overall, I tend to think of the Sennheiser HD5xx/6xx series as workhorse headphones that sound great, are very comfortable, and are never offensive. They may not win awards for looks or have that really high-end "magical" hi-fi sound, but they are tonally well-balanced and very pleasant to listen to.
      pressureworld and Kon Peki like this.
  5. Woody469
    Everyone Should Own A Pair
    Written by Woody469
    Published Jun 3, 2010
    Pros - Non Fatiguing, Accurate Yet Delicious
    Cons - Unless You Can Properly Amp and Source, Don't Bother
    I was enjoying these just fine using an RSA SR-71A portable amp. Quite powerful little amp for a portable.
    Recently purchased a Channel Island Headphone Amp with upgraded Power Supply. Wow ! I thought I had heard the HD650 but in fact what I had been listening to was trash compared to what these are capable of when properly amped. Expansive soundstage, deep, powerful bass, crystal clear highs and a midrange to make you drool. Top notch headphone ONLY if you feed it properly.
    1. bx24
      Hi, Woody469. Sorry if I'm a bit late with this- (i'm new), but would you tell me what CI amp you got and was it truly audiophile awesome? I too bought HD650s... Thanks a bunch,bx24 (Johnny)
      bx24, Feb 1, 2011
  6. EddieE
    Natural Sounding And Laid Back Great All Rounders
    Written by EddieE
    Published Jun 23, 2010
    Pros - Work well with pretty much every genre; extremely relaxing; superb bass; look great
    Cons - A little bit of a tight clamp
    I've owned these headphones for around a year now, when I first bought them they were a quantum leap forward in my headphone listening life. It felt like a big spend as I had to buy a desktop amp and a dac at the same time and it took a pay rise at the point where I was questioning the wisdom of it all to finally pull the trigger. I never looked back.
    It is funny that the cost seemed so extreme to me now; once you delve into the audio enthusiasts world and see the prices some other headphones go for you realise that the HD650 is in fact a serious bargain, especially since many people (myself included) think it is a far better phone than many of those higher priced offerings.
    The sound signature is one with bass emphasised yet superbly controlled and clear; I am definitely in the camp that thinks that a respectable boost in the bass region makes music sound more natural.  Perhaps this is because the majority of cheap music systems have speakers that put out uneven bass so producers make the decision to counteract that with reduced bass? Whatever the reason, the HD650 level of bass and mid-bass is spot on for making the music sound real and natural and live.
    Laid back is another term often used to describe these headphones and for good reason. Some people call this a "veil" over the sound but I think that again, what they are reproducing is a very lifelike sound. In real life the source of all sound is not an inch of so from the ear like with headphones, everything does seem a little pushed back from us and since we are used to this I find that it adds to the natural feeling of the phones.
    In terms of sound stage, well I used to think it was perfect, but since I got the AKG K702 I have to say I have found myself wishing the HD650 could be a little spacier. Everything else about the headphones sound sig, from the laid back presentation to the natural bass boost seems to be aiming for a realistic sounding reproduction of live sound so to have it all so close around the head is a little self defeating. That said, it is certainly big enough for analytical listening and beats other high end phones, like Grados, by a country mile.
    Since everything about the sound engineering of these phones seems to be aimed towards making you forget you are wearing them it does seem an odd decision for the product designers to have added a clamp so tight you really cannot be unaware they are on your head. This is well counteracted by the softness of the very comfortable pads and I was very used to it but when I got my AKG K702 I did start becoming a bit less forgiving. When my other main headphones were the MS2i with flats the HD650 showed up favourably in the comfort stakes, but with the velour laden K702 with its self adjusting headband and super light clamp I definitely now feel the pressure on my temples of the HD650. I've read about people bending parts of the headband to relieve this. I've also seen pictures of snapped headbands as a result so am going to play it safe and live with it. It has slowly reduced over a year and I imagine will disappear completely in the future. This is a shame though as the sound of these phones is one I find extremely relaxing and this effect is negated by an unfortunate product design decision. 
    This is the one minor bugbear regarding a high quality, great value package. Everything about them screams quality, from the classy timeless design to the velour pads and padded headband to the sound when you put them into action. While there are some genres other phones do better with (K702 certainly a better option for classical and electronica) there is no genre these do not do proud. So long as they don't break (and I do baby these headphones) I would not be surprised if I'm still putting these on my head in retirement.
      coolbluesurface likes this.
  7. MrProggie
    Perhaps the last headphones you need to buy
    Written by MrProggie
    Published Jul 14, 2010
    Pros - Good with all kinds of music. Very revealing of micro details.
    Cons - Hard to think of any.
    I bought these used in near mint condition and they were already burnt in.

    The so called Sennheiser veil won't bother you that much. You might notice highs rolling slightly off on instruments like harps. Some headphones might make Loreena McKennitt's harp playing almost pinch your ears, but on HD650 it's a pleasure to listen to.

    I have never owned headphones of this quality before and it was something of a revelation to hear FLAC files through these headphones. Suddenly I heard details and sounds never heard before even though I have owned some of my CD's for 23 years.

    These headphones obviously needs a separate headphone amplifier whether you're going to use them on your portable rig or on your stereo. Ordinary portable mp3 players can't play the HD650's high enough and the headphone amps built into CD players and pre amps might not be of good enough quality to take fully advantage of the HD650's.
  8. ardilla
    HD650 - inside the music
    Written by ardilla
    Published Aug 24, 2010
    Pros - Varm, detailed and intimate sound
    Cons - Pads could be softer / headband should be less thight
    1) My setup at home: Naim DAC - Naim Headline - HD650. I love it. It's like being in a dark room sitting in the midst of the band playing - or rather inside each and every instrument simultaneously. My only complaint is that sometimes on some specific recordings I get the feeling I might prefer a slightly colder, more distant soundstage. The HD650 seems to have a slight bass "hump", which usually is very enjoyable, but sometimes can get a bit too much. Can't win 'em all :) 


    I  also want to add that I experienced that the 650's needed 50 hours + burn-in. I was actually quite dissapointed at first. 


    2) Did a comparison for an hour or so in a dealers listening-room on these three great headsets on a Lehmann Audio Black Cube Linear Amp using a rather expensive firewire-dac as a source. 


      1) Grado GS1000i 

      2) Sennheiser HD800

      3) Sennheiser HD650


    The 650s had a presence in the mids (vocals, sax, piano etc) the others simply couldn't match. Grado's are good - but I feel they are too bright for me. HD800 felt more bright, polite and subtle than the 650's and are terribly comfy. They all deliver plenty of detail, but the 650's make you listen more to the music... 


    The Lehmann Audio Black Cube Linear struck me as a very, very good amp with the HD650's. (EDIT:) They are also great wtih the Grace m902, which I presently own.



    (EDIT): I have now owned the HD800 and sold them. They sounded at worst anemic and bright, but detail and soundstage to die for. Now I have the T1 and HD650 - they are a good complementary pair. I alter between them after mood and recordings. T1's advantage is in the soundstage and its more "airy" sound signature. But if I had to keep only one (ignoring financial value), it would be the HD650.
  9. cjpearson
    Hd650 - losing my headphone virginity
    Written by cjpearson
    Published Aug 26, 2010
    Pros - Comfortable, well made, the sound! semi-affordable, attractive, great packaging
    Cons - None
    I was lucky to find my pair for sale at the price I paid (so my saying this is a bargain is based upon the relatively low amount I had to part with.) Firstly, i'm not, by any means - an audiophile (yet.) Although I love music, love to put my headphones on my head and relax, I am still coming to terms with all of the lingo and what not.
    To the headphones. I've never owned an audiophile paid of full-sized headphones before. The closest I came was the 515s then the 595s. Both were okay, but lacked any real character. When I stumbled upon this site, I couldn't hold back any longer. I sold my other cans and invested in a pair of 650s and a Little Dot MK III Amp. 
    I quickly had a silver cable w/Eichmann interconnects and a pro looking LOD connector made, and I bought a nice new iPhone dock. This combination really is magical. I have converted all of my audio to Apple lossless and this sounds just magical.
    The sound from the cans themselves is impressive. The bass is fair, clean and full of conviction, though not overly 'bassy.' The treble is smoothe and definitely not shrill, so far I have experienced, and enjoyed the following genres, on these headphones: Rock, classic rock, classical, jazz, blues and some easy listening. Great headphones, really have me hooked on sound - can't put them down.
    What 'Sennheiser Veil?'
  10. eugenius
    HD650 - why the middle road is for fools
    Written by eugenius
    Published Aug 27, 2010
    Pros - good frequency response
    Cons - muddy bass, soundstage not very wide, slight veil
    I recently used a borrowed HD650 in a balanced system for about a month.

    After I gave it back and returned to my balanced Grado HF2's, I was shocked how lifeless the HD650 were.
    I must thank Sennheiser for making me appreciate my current headphone.
    1. View previous replies...
    2. josephpino07
      Euginius u can't say people must be deaf (which is something close to an insult) and then end up saying: "stop arguing about my taste". I love grado, but the hd650 is more neutral than the 325is (dunno about the hf2)
      josephpino07, Mar 6, 2012
    3. eugenius
      Being more neutral than a Grado is like me being more alive than Elvis.
      eugenius, Jul 25, 2012
    4. MrTechAgent
      LOL - Your opinions surely have a slight humor to it :p
      MrTechAgent, Jul 22, 2013