Sennheiser HD 650 Headphones Reviews

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.

Superb

I bought these headphones on December 2011 and have since been thoroughly using them. I am absolutely happy with my purchase and here is why:

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.

I love them, perfect sound.

Great headphones. Really enjoy mine.

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.

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.

Great headphones , not too far behing the best cans out there for much less. Sound better when balanced and with aftermarket cable.

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.  

These cans are exquisite. I can literally fall asleep with these on. This fact is cheifly assoiated with their velour ear pads. And in regards to sound, their sound quality is immearsive. No singular element of their sound is deprived. I can state that they're immaculately endowed with mid-range presence.

Bottom line is. if you can afford the admittance fee these will grant you auditory bliss.

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 much better the Grado's were.

I must thank Sennheiser for making me appreciate my current headphone. That's about the only good thing I have to say about the HD650. :)

I can't believe these were the "standard high-end headphone" for a long time. I guess most people are deaf.

I had several of those (balanced and unbalanced) and I liked them alot.

I can't remember if they had the newer "silver" drivers.

I compared them with the HD600 and they sounded better.

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?'

I've listenend to all the top offerings from Denon, AKG, Ultrasone & Sennheiser (including the new 800) and this is my personal favourite. It is a true reference class 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 come alive amazingly well. It has no problem spanning all the way from the deepest bass to the highest highs with supreme control and tightness.

For the money I think this is a real audiophile bargain, the HD650 exists on that plane of ultimate performance where sound quality becomes no longer a factor of quality but rather personal taste. It really doesn't get much "better" than this no matter what you pay.

Mind though that this is an open headphone so it's not ideal for public places, neither would I recommend driving this beauty with anything like a phone or Mp3 player due to its rather high imepedance and revealing nature. I would also recommend matching it with source componets that are on the neutral to brighter side of the spectrum, rather than the other way around.

If I am to be picky I would also say that they exhibit a slight veil at low listening levels, and 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 a superb headphone that comfortably matches, or beats, competitors at more than twice its price. Not to be overlooked!

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.

There's plenty of debate around here as to what makes a headphone "high end". Putting price aside for a moment, I have no doubt that the HD650 marks the beginning of the high-end range. I've auditioned many headphones over the past few years and while many sound different only the electrostats such as the HE60 truly sound superior in every way to the 650s.

In terms of sound the HD650 is what I would call a "natural" headphone. Very rarely do I get the feeling that any part of the spectrum is being over-emphasised and the result is an intimate presentation with good (if not exceptional) soundstage - perfect for live performances. Some would criticise the 650s for their rolled-off treble and I believe this is valid but mainly when the headphones are poorly amplified or paired with a poor DAC unit; I would certainly avoid running these directly from a computer's sound card, for example. My pair are used with a DAC1 which does a good job of brightening the 650s' sound signature without making the treble sound sterile.

The low-end and midrange of these cans is what stands out for me. Bass is almost perfect with good extension and decent impact. Though dark-sounding I never get the impression that the bass is being emphasised to the detriment of other frequencies. I also find that bass quality improves dramatically with higher volumes, this is likely because I listen at quite low volume most of the time and the extra juice is just what these cans need to shine. Moving on to midrange, these cans are excellent for female vocals as well as string / brass instruments with the original tonality being replicated solidly.

I paid almost exactly £200GBP for my pair in 2007 and I find that to be excellent value for money. Build quality is sturdy and the sound that you get for the price is ridiculously good - others have spoken highly of the ability of these cans to scale with the rest of your system and I can only echo this. My one gripe (the reason I docked a star for design) is that the paint tends to flake off slightly around the midpoint of the headband over time; continual flexing of this point as you stretch the headphones over your head contributes to the wear.

I like my HD650.  I have always liked the Sennheiser sonic signature and I was immediately impressed after using the HD555 for a couple of years

But then after awhile; after some A/B comparisons I heard the famous HD650 veil.  There seemed to be less treble response than the HD555.  Yes there was definitely more detail and Bass, but after A/Bing with the HD555, I became a bit annoyed. My parents have a cheap triple port headphone amp connected to the TV for $40.  When I connected the HD650 to it, there was no treble response.  This is where impedance matching is really important and something, that most people who dis the Sonic Veil of the HD650 don't understand.

So i decided to buy a Class A amp from Firestone (as we don't have much choice in Australia) , the Libby, and the veil disappeared. In fact now they sound bright.  

So now I really enjoy them.  I do connect them to my Fubar III (Class A/B) occasionally and can hear the dullness returning, even with the high impedance setting. I dont think I need to replace the stock cable as they are bright enough as it is.  I would rather use that money to purchase the HD800 or an AKG.

I really personally believe that the veil became an urban legend because people were or are hooking up to either poor amps or no headphone amp at all. I read quite regularly on these forums that people say that headphone amps are useless, but if you really want decent sound and spend a fair but on headphones you really need to get an amp.

I like the sound of open headphones because I live in a quiet area and don't need to isolate the sound.  The headphones are extremely transient. 

I dont regret buying them at all

+++++

If you are looking for a great audio experience and are willing to pay a little bit more than typical price. These headphones are open back, so if you are listening in noisy areas they loose alot of their ability, but in the same light the sound quality is excellent in quite areas. If you plan to buy these headphones then consider using them for home use where you can get to a quite area that you are willing to listen to pretty much just listen to music. Also these headphones are not for everyone, I say this for one simple reason : YOU HEAR EVERYTHING! Literally I was entranced when I first these headphones for a simple guitar riff. Since I play guitar I heard every little imperfection in the note played. But overall these are one of the best headphones that money can buy.

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.

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.