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Sennheiser HD 600

100% Positive Reviews
Rated #2 in Over-Ear


Pros: Luxurious midrange, full and extended bass, smooth treble, comfortable.

Cons: Maybe a bit too full-sounding? Not quite as resolving/detailed as some of its peers.

Let me just say one thing up front: if you have any complaints about the speed or the bass extension of these headphones, you need a better headphone amp. /endofdiscussion The HD600s will take the best in source material and amplification, and give you the best sound in return. It's not coincidental that these cans are held up as the reference's reference: more than any other headphone I can think of they sound like whatever it is you are listening to. Their most notable audio characteristic is this ... amiable compatibility. That and the ability to play cleanly at very loud peak levels. Combined, the HD600s are ready for whatever you care to throw at them, never drawing unwanted attention to themselves, always sounding great.


Perhaps part of the secret to this neutrality and high enjoyment factor is the way they dial down the resolution just a tad. A fraction de-focused, one notch less treble intensity - blending the music into a coherent experience rather than individual strands of detail. Some people might disapprove, I call it genius.


These are comfortable, durable headphones built to a high standard. The foam pads on the earcups and headband died after a decade or so, but I easily replaced them with the new parts from Sennheiser.


Pros: Pros : Sound quality, comfort, build, modularity (parts), balance, naturalness, clarity, detail

Cons: Cons : Headband not as strong as it could be, initial clamp force

The Sennheiser HD600 is an open dynamic circumaural head-phone which Sennheiser market for audiophiles, and also state as ideal for studio monitoring.


Pre-amble (about me at time of writing)

I'm a 44 year old music lover.  I don't say audiophile - just love my music.  Over the last couple of years, I have slowly changed from cheaper listening set-ups to my current entry/mid-fi set-up.  I vary my listening from portable (i-devices + amp) to my desk-top's set-up (PC > coax > NFB-12 > HP).  My main headphones at the time of writing are the Sennheiser HD600s, a modded set of Alessandro MS1i, and a set of B2 iems.  I previously owned Beyer DT880, Shure SRH840 and 940 + various other IEMs. I have auditioned quite a few entry and mid-tier cans, but have yet to hear any flagships (at current time of writing this review).  I have very eclectic music tastes listening to a variety from classical and opera to grunge and hard-rock.   I listen to a lot of blues, jazz, folk music, classic rock, and alternative rock.  I am particularly fond of female vocals.  I tend toward cans that are relatively neutral/balanced - with a slight emphasis on the mid-range.  I prefer a little warmth in the overall signature.  I am neither a bass or treble head.  Current amps = NFB12, GoVibe PortaTube, Fiio E11.  Previous desktop set-up was a Fiio E7/E9 combo.
Packaging and Accessories
I purchased my HD600s from another Head-fi member.  They come with a very solid and well padded case, and a 3.5-6.3mm adapter.
Technical Specifications
From the Sennheiser website :
Nominal impedance = 300Ω
Contact pressure = ca. 2,5 N
Weight w/o cable = 260 g
Jack plug = 3,5/6,3 mm stereo
Transducer = principle dynamic, open
Ear coupling = circumaural
Cable length = 3 m
Frequency response (headphones) = 12 - 39000 Hz
Sound pressure level (SPL) =  97 dB at 1 mW
THD, total harmonic distortion = 0,1 %
Frequency Response Graph
(From HeadRoom)
Build / Comfort / Isolation
The HD600's build is solid - but not 'bullet proof'.  They are very light-weight (plastic headband - with a carbon fibre inner band) - but they are well put together.  If I had one criticism, it would be that the headband is not as strong as I expected.  When I got mine, I found them a little 'clampy' - so thinking the carbon fibre inner would be strong enough, I tried to stretch them to alleviate the clamp.  Big no-no.  Snap!  One broken headband, and me almost shedding 'manly' tears.  Admittedly, I stretched more than I should have - but it was because I expected the carbon fibre to allow the plastic outer to bend.  Anyway  - you have been warned.  I'll tell you how I fixed them down the page shortly.  The shell is plastic (very light) with some plastic moldings - the outer shell has a marbled look - that I think actually looks quite classy.
hd600-2.jpg hd600-3.jpg
 The headband padding is actually very soft and extremely comfortable.  The ear pads are a soft velour which has quite deep cups, and are also very comfortable.  Note - after a while you get used to the tight clamp - and I've found I could wear them for hours.  They would be the second most comfortable headphones I've owned - just behind the DT880s.
hd600-5.jpg hd600-6.jpg
These are an open can - so there is no isolation in or out.  They are not as bad as a Grado - but they are open.
The huge benefit with these cans is that they are completely modular - you are able to break them down fully, and all parts are replaceable - even the drivers.  So after my "mishap" - I got in touch with Sennheiser, and they had a replacement headband on it's way to me.  It was a very simple operation to dismantle the headphone and swap the parts out.
The cable is also replaceable, and you can go after market if you wish.  Personally I find the stock cable to be very sturdy (advertised as OFC copper and kevlar reinforced) - and it doesn't seem to be prone to cable noise or tangling.
Listening Set-up
My main set-up with the HD600 is PC > Coax > NFB-12 >HD600.  For a transportable rig, I use iPhone4 > PortaTube > HD600. 
Sound Quality
These are very simply "keepers".  They are the most natural sounding headphone I have used or auditioned to date.  They are very well balanced across the spectrum - with a slightly elevated mid-bass and lower mids.  Overall I would call the sound slightly warm without being dark.  I used to play guitar, and have spent time in my youth listening to live orchestra and solo violin - and I found the HD600 to be quite realistic.  A quick summary of the main sound quality headings:
Detail - While not as detailed as the DT880, I found the detail on these still quit high.  They do tend to be slightly laid back, and can get slightly congested with very fast music.  The clarity is very good.  I find them articulate and refined.
Sound-stage - Similar to the DT880 in overall size.  Depth and width ifs quite good, and instrument separation (particularly for classical) is quite good.
Highs - These surprised me.  They are nowhere near as etched as the DT880, but I don't find them veiled at all.  For me the highs are quite natural - no trace of sibilance or harshness, with still good detail.  Highs are not the focus, but they are still presented beautifully.
Mids - IMO this is where the HD600 really shines.  Acoustic guitar (any stringed instrument really), piano, and female vocals especially are wonderful on the HD600.  I recently bought Alison Krauss and Union Station's album Paper Airplane.  The combination of Alison's vocals and the bluegrass flavour of the music is simply divine.
Bass - on the NFB-12, the bass is well defined and punchy - with good impact.  it just doesn't reach low into the sub-bass like the DT880.  But it doesn't need to - because once again the bass is beautifully balanced with the rest of the frequencies.
Power Requirements
The HD600 has 300 ohm nominal impedance - but what surprised me is how easy these are to actually drive.  They do sound wonderful out of the NFB-12 and also my PortaTube - which both have plenty left on the pot.  But I can also play these easily on the little Fiio E11, and even out of the headphone out of my iPhone4 (admittedly on about 80% volume).  On the iPhone4 unamped, the bass becomes quite boomy and muddled - so it's obviously not being driven properly - but these don't require huge power.  They do seem to scale well - the difference between E11, my E7/E9 (when I owned it) and now the NFB-12 is noticeable - with extra body and definition from the NFB-12.  I'm looking forward to trying these with a Schitt Valhalla sometime next year.
Summary / Conclusion
The HD600 has become my favourite headphone for simply listening to music.  They are well built, comfortable, and sound simply phenomenal.  Their tonal balance and the naturalness of their sound is the best I've personally heard so far.  While I wouldn't recommend them for critical listening (the DT880 is better for the extra detail and extension it brings), for non-critical listening enjoyment - there are few better IMO.


Pros: Legendary sound, shows off the gear, all na-tu-ral.

Cons: shows its age a tad, kinda clampy.

This is by far the closest I have come to writing a 5 star review. Of course to get that, I would have to find the holy grail of headphones for me.


I had tried the HD558, HD598, HD650, and HD700 and figured I would simply fill in my knowledge gap. I had no intention of keeping the HD600 for any length of time. I found a new pair new for $200, thought it was worth the experience. Obviously, I got more than a fleeting memory.



These headphones sound like a dance in the ballroom. Calm, composed, simply natural. No hidden tricks, but all the skill is present. They are like a golfer who hits the ball 150 yards perfectly straight every stroke. Undeniably others have noted how neutral these headphones sound. Yes, they are correct. A little bass/sub-bass-light, but not many open back dynamics aren't. In fact, the more power you feed to the HD600, the more bass is spit back out. As some of you know, I don't really care what a graph tells me about headphones as cool as graphs are. What matters to me is how they sound, and what wonderful thing they can do to make my music more enjoyable, real, or revealing.


Thanks to our lovely community here, I bought a Project Polaris Amplifier from Garage1217 simply to bring more life to my new friend.



Yes, this made a difference. I plugged it all in real quick, and proceeded to be disappointed until I had the brains to move the gain setting up, and boy that made all the difference! There is now more bass, more extension, and overall more life. The Polaris also showed me something wonderful about the HD600. For the first time I found myself using a headphone to figure out what my gear was doing, rather than narrowing down variables with many other headphones. That is the definition of reference. I spent many hours with many headphones determining the exact sound of a FiiO e10, when it took 10 minutes and some HD600s to find out the same things I had spent so much time gathering.

 In case you were wondering about the Polaris: there is a slight tubey hollowness, though not much, excellent extension, and enough low end power to fill out the sound. (The thing needs its own review).


I'm gonna sneek in the ugly real quick.

The clamp is real. The cord is typical Sennheiser (FIX YOUR CABLES), but I don't hate it as much as any other cord they make. At least it ends in a 3.5 default...Not to mention the 1/4 inch adapter is fabulous as well. There isn't really a veil (at least if powered correctly), but there could be more detail.


I came from daily using HD700s. I love them by the way. Now they are in rotation with my HD600s, mostly because the HD600s clamp becomes a bit uncomfortable after a while, or my ears get a tad hot. I can honestly say that there is very little I can find wrong with these headphones.

Would I mix with them? Yes.

Would I test the mix equipment with them? Yes.


The balance and tone are fantastic. Every other headphone I have tried is immediately Bright/Dark Warm/Cold. The HD600s took me by surprise with being none of these things. The only distinguishing factor seems to be the slight lack of lower bass, and the slight hike toward the treble. The best part is pretty much nothing is offensive about the sound. I can relax while listening to them. It is not so much a relaxing sound, but it allows me to be relaxed. Priceless.


As for my per review music recommendation; this is most difficult because everything sound wonderful on these. Nothing was hugely exciting, but everything was as it should be.

I had songs that I really didn't listen to anymore become part of the regular loop again simply because the HD600 did them the right amount of justice.


Song Recommendation: The Veldt (Original Mix) - Deadmau5


If any of you have some nice recommendations, please share. Questions are cool too.



Future comparisons go here: I have found that this is pretty much just describing the sound characteristics of everything except the HD600


HD600 vs HD700:

The HD700 has some warmth, more detail in many frequencies, way more soundstage, and sounds quite smooth due to the warmth. The problem lies in the treble spike which the HD600 simply doesn't have. The HD700 can be a little harsh at times from that spike. The HD600 clamps much more too. They are like cousins. They clearly are from the same family, but have enough difference to not be brothers. I think I like them both equally.The HD700 adds that magic spark to many songs, while the HD600 has a magic neutrality which works with EVERYTHING.


HD600 vs SHP9500:

The SHP9500 has far less clamp, much more shallow pads, and of course the wonderful advantage of having a single 3.5mm port for the wire. The sound is a bit grittier on the SHP9500. The SHP9500 sounds a leaner than the HD600 though they are very similar sound signature-wise. The soundstage is a bit better on the SHP as well. The SHP9500 is a wonderful deal for the price point. I also think the HD600 is a worthy upgrade, especially if you just want fuller, more cohesive sound. Simply put, the HD600 basically replaced my SHP9500 for daily use.


HD600 vs HD558:

Seems unfair right? Well, the Project polaris amp added much clarity to my HD558s, so now they are not far off of a very bassy HD650. Obviously still more veiled, a bit of a treble hike at like 10k? Much boost in the mid-bass. There is more extension in the HD600. The pads are thicker on my HD600, but wither pair can have the pads replaced with HM5 pads using adapters from ModHouseAudio.

They both share that Sennheiser smoothness.


HD600 vs Superlux 668b

Well, now you know my next review. The Superlux is much less forgiving and harsh, more treble, and gives excellent detail. The Superlux strikes me as a bit V shaped with emphasis on the treble comparatively. Definitely leaner than the HD600. some frequencies are a bit under-represented on the Superlux. The bass is a bit lean too, but it gives pretty good extension, and great soundstage. The real difference for me is that it sounds like you are monitoring a recording on the Superlux, While listening to music on the Senneheiser. Of course the 668b has far less "veil" and more excitement similar to the HD700, but not nearly as full as the HD700. I think these are wonderful as well.


HD600 vs HD650

With fairness that the HD650 did not get the Polaris amp treatment: While the HD600 is pure neutrality, the HD650 tries to become a bit more fun by adding mid-bass. The treble becomes slightly accentuated as well. the result is that the roll off in lower bass is more noticable, but the overall sound is smoother. The vocals are not quite as clear with the 650, but gains enough warmth to make up for it. I think it is just as capable as the 600 in detail retrieval. I recommend the 650 if you herd the 600 and wanted a little soundstage and smooth warmth instead of only raw neutrality.


Conclusion: If you have not tried HD600s on a good amp; make it a must for your audiophile knowledge. I now understand the well deserved status these carry after all this time. I not only put these on my list of approved headphones, they go right on top, right where they belong, on their throne.


Pros: Euphoric Sound, organic, laid back, easy listening, airy, good detail

Cons: lacks aggression, rolled off sub bass,

Check out my Video Review for the Sennheiser HD 600! 




Well guys I want to say I finally did it! I broke down, and purchased a Sennheiser HD 600. After hearing about it for YEARS I just had to hear it for my self, and I'm rather glad I did! 

Though it should be noted, my HD 600ish is technically... an HD 580 headband, HD 650 Grills and Cable with HD 600 drivers within. So in a sense, it's bit of a FrankenPhone. But it's got the  HD 600 internals so a HD 600 it shall be!

The build quality on the unit is very nice! It has a good in the hand feel to it. Granted it's mostly plastic, but it still has a nice sense of weight and sturdiness to it. 


To start with the Headband it self is composed of an inner metal band and outer plastic components. The Ear Cups are adjusted with a nice click as you move them down the notched head band. Again everything has a very nice feel to it, nothing's flimsy or weak.


Again these are the HD 650 Grills... but they look nice. Again  nothing flimsy on this headphone. 


The Cable is also from the HD 650, and I'm happy with it! It's a rather long cable and I've rolled over it a few times by accident now, I even stepped on it once. Non the less, like the rest of the headphone it has a good feel to it. Just an over all well built quality through an through! 


FooBar 2000 -> Kernel Streaming -> Audio GD NFB10ES2 Dac Line Out -> Schiit Vali

So I'm running these through my Vali and I won't be doing any comparisons in this review! For the test tracks I used  this album.

Late Night Tales : Air


The albums is a lovely mix of Classic Rock and Classical Music, with a little techno added in there! I think it makes an excellent demo Album for any headphone or system!

The HD 600 has one of the most Euphoric sounds I've heard! It's has a great sense of organic warmth and is very laid back. 

Now many people claim this is a "veiled" headphone, which I disagree with. The unique color of the headphone is very different! Many of my headphones have a peak around 8-9k, well the HD 600 has a DIP there and a peak around 3-4k. Thus, upon listening to it sounds very different! Though, after about 10mins I found my self noticing a great deal of detail and air within the warm intimate sound of the HD 600.

In short, the HD 600 is a wonderfully organic, airy and detailed headphone. It is certainly intimate and warm, but is by no means fuzzy or veiled. 

You do need an amp for it and I highly recommend the Schiit Vali!



Pros: Wonderful mids, easy listen for long periods, great for audio work, nice comfort, cheap in Europe.

Cons: Sub bass, proprietary connections, plasticky design, highs vs. good planars

This is a classic for a good reason, it just does so much right. It basically excels at nothing (but the mids), but it's just so easy to believe in the way it represents music. It's my go-to headphone for checking out mixes and music production in general. 


Here's my video-review of the HD600:




They sit tightly on one's head, but the clamp is pretty much spot on - a bit tight at first, but it gets very good. These fit my big head easily. The oval-shaped earpads are some of the comfiest (Beyers are maybe even better). They are very light and seem to take lots of beating too. For the price they are kind of plasticky, but all of the components can be replaced in needed. I once misplaced the input on the right side - I thought these 'phones were done for... Well, all I needed to do (after watching a tutorial) was take the HD600 apart (without any tools, mind you!) and move the socket back into place. This took me under 2 minutes.


I've had the HD650 cable from the start, that's what my used pair came with. Buying an expensive replacement cable would be the last thing I'd do to make them sound better. If you want different looks or length, go for it - but it's not going to affect the sound quality substantially. If the cable works, it works!


Let's get into sound quality! I listen to lots of rock, metal, pop, hip-hop and some jazz...






Very well proportioned, it's one of the few that get the amount right. It's not bass-deficient like AKG K701 or too fat like Philips Fidelio X2, it's somewhere in betweenFor me, it's the right amount of lows to make good judgments when mixing. It's also very pleasing when listening, as long as you're not coming straight from some bassy 'phones. It doesn't screw up the mids or seem lacking either. Bass is where my (150 euro) HD595 faltered, they were kind of all over the place in it.... BTW, I trust the HD600 much more when mixing bass frequencies than my Adam A7 active monitors (with a sub) because of the bad acoustics in my apartment. All in all, these type of neutral headphones are great for mixing the lows especially, much recommended!


The sub-region is not at all at the level of my Audeze LCD-2 (rev.1), but this is very similar to most speakers without external sub-woofers. Just to mention, the sub-bass region isn't even that important in most mixes, it's very often cut out almost completely. The "meat" of any mix is above say 60hz anyway. There's no problem with the HD600 there. (When there is much information in the subs I grab my LCD-2's...)



Man, these do great here. Guitars, vocals, bowed instruments, you name it. HD600 rule the roost (HD650 too). Listening to Back In Black by AC/DC those rhythm guitars just sound so in-your-face, neutral and correct.... Very few headphones get to these levels of mids quality. My LCD's get there pretty much, but maybe not quite as realistic levels - the differences are not that big. This is where HD600 can compete with those 1K-headphones very well.



Those nice guitars by AC/DC are doing their their beautiful crunch in the highs too, and yes, they most certainly are. There is a boost in the 3K region, that might be the reason HD600 sounds kind of "dry", not dressing up any ugly things happening with the most important things in a mix (vocals, guitars, snare, kick etc.). The sound stage is very much controlled, not very big like K701. But, my Audezes sound audibly more clear in the highs - it seems as if there is more headroom and less distortion. They're at least more pleasant up there. That's for sure.





I used to have both of the HD6xx-models. But, once I got my LCD-2's, the HD650 became kind of redundant - they didn't match the fun factor of that Audeze low-end or have the same level of resolution in the highs. HD600 is dryer and more "boring" in some ways than the 650, but that's the exact reason I kept them. They are just great at telling what's going on in a mix. HD650 were pretty close, but slightly too nice and fat in the low-end... Bad mixes just didn't sound bad enough! If I could only have one pair of open headphones at home, HD650 just might be my choice. But, HD600 are more neutral and LCD-2 more fun.



I used to use these straight out of my Apogee Duet's headphone output. Recently I bought a Schiit Lyr 2 that makes the low-end slightly more balanced. But, the differences aren't huge (say it like Trump!). The Schiit brings a slight more subs into the mix and flattens the "hump" in the lows/low-mids. I bet I'd be quite happy with the Duet still though, if I didn't have my Lyr.




Thanks for reading! This headphone gets my recommendation easily, after +30 pairs of different models owned. As the prices for top models go up, these stand firm. Released in 1997, almost 20 years ago... They are still one of the best! Check out a pair if you haven't yet.


BTW, I'm not affiliated with anyone, I'm doing these reviews for my own (and your) enjoyment.


Cheers folks! :) 


Pros: Sound Quality, Build, Comfort, Scalability, Modularity

Cons: Stock Cable, Veil, Slow Speed

The Sennheiser HD600's are my first set of headphones. I have long wanted to pen down this review, and here I am writing this review after several months of experience with my beloved HD600’s.





Intro : I am an 21 year old Engineering student living in a small town in India. I would like to call myself an music enthusiast, rather than an audiophile. I mostly listen to Bollywood and Indian Classical Music. There is not much audiophile-community presence in India, Though lot of potential remains to be tapped. Auditioning an headphone is almost impossible in India. At the time of my purchase, I took recommendations from fellow Head-Fi ‘ers who guided me into right path, towards the Mighty HD600. 


I will try to keep this review simple and hope it will help fellow enthusiasts to know more about the wonderful HD600.


Sennheiser HD600 is an upgraded version of the HD580, which was an revolutionary headphone released in 90’s and has won thousands of ears along its journey till today. The HD600 is made in Ireland, and comes packed in an thick and strong cardboard box which is cushioned from inside, where the HD600 stays put, for its onward journey towards the beloved owners! No complaints here.






Design and Build : Excellent and practical build with professional grade materials. High quality joints, nothing squeaky, sturdy grills, conventional yet very reliable connectors. nano-carbon material ensures in light weight. Very durable, sturdy and reliable construction, along with an attractive Marble finishing. Now not many prefer marble finishing, but as for me, I love it! The HD600 is modular! One can fully dismantle it and assemble it back with ease! Which ensures in long life and easy maintenance of the headphone.



Comfort : It is very comfortable, can be worn for hours without any sign of discomfort, thanks to oval shaped earcups. The Initial clamp force is a bit strong, but the force relaxes off gradually according to the shape of our head. Ventilated velour pads along with head cushions keeps us cool and comfortable, which is a big plus for Hot climatic countries like India.  



Sound : The HD600 is an Wonderfully sounding headphone. It’s sound can be consider as ‘Euphonic’ Rich, Textured, magical sounding with very good sound stage and details. It’s natural, smooth and grain-free sonic quality often makes one feel as If they are hearing their music in real concert and not through an headphone!


Lows : Very good bass and sub bass. Balanced and Tight, well extended, and clean.


Mids : Seductive and very natural. Mids are presented in a lush and rich manner, which results in its pleasing natural sound.


Highs : Realistic and smooth. Not Bright. Just ‘Right’


Sound-Stage and Details : Sound stage is very good though not as wide as Q701 and not as detailed as DT880. The soundstage and detailing of HD600 is very balanced and ‘Just Right’ and ‘Realistic’


The HD600 can be said as more natural than neutral with respect to its sound. The HD600 gives Hi-Fi sound at Mid-Fi price point. One can listen to HD600 for hours together without any hint of fatigue or discomfort. Another positive point about HD600 is that, HD600 scales very well with equipments! I can easily recommend the Bottlehead Crack, which is an excellent OTL amplifier, has special synergry with the HD600. Otherwise an economical O2 amp will also do for an very good listen. The stock cable is quite thin, a reasonably priced Cardas cable would further enhance the already wonderful sound of the HD600. 



Conclusion : HD600 is an truely amazing and exceptional headphone! One can cherish it for lifetime. The HD600 is an masterpiece, which is a bliss for audiophiles and enthusiasts alike.



The following features are hard to find anywhere else, but are present in the HD600 :


1. Eternal Sound Quality

2. Super Comfortable

3. Very Durable

4. Scale-ability

5. Modularity

6. Affordable.


I would like to thank Sennheiser for creating the legend and Head-Fi for continuing the legacy.



The Sennheiser HD600 is not just another headphone; It’s a Legend.


Pros: Neutral sound signature, all parts user replaceable, scale very well, balanced cable makes them thrive

Cons: Limited bass that doesn't extend terribly low, require keeping earpads firm

I bought these headphones because I thought that closed cans were getting a bit fatiguing (pressure on the ear-drum from closed environment), because I wanted a can that could adapt to a balanced cable well, and because I wanted a neutral sound signature. I got all of those things.


These are great all around performers and one of the best bargains that you can get in Head-Fi if you are willing to buy them used. I live in the UK and searched around for these in the UK and Germany used (always good to look at prices in several countries). I ended up picking these up for £135 off of a seller in Germany. I saw others go for more, and later others go for less, but I still feel they are one the most spectacular non-free bargains I have gotten in Head-Fi.


The pair that I got has older drivers in it, and newer ones are reported to sound better--they have different materials in their voice-coils. Mine had worn down pads that made the bass sound muffled and limpid. It was like someone had strangled a snake and bathed it in chip oil. It was terrible sounding bass. Luckily, that was easy to fix, as soon as I got my replacement ear-pads they sounded like a completely different headphone. The veil was lifted, the bass was released from it's greasy dungeon, and the headphone became much more enjoyable. It still lacks on the bass, though.


I listen to all kinds of music, from Miles Davis to Megadeth with stop-overs in weird Indie land, twee town, and the punk pits. These play what I like very well. I compared these to the stock HD800, and found that I thought the HD800 bass sounded loose and unsatisfying. The HD800 does space and bright lights well, like the Hubble telescope pointed to far away galaxies, but it's bass image was like if you turned that Hubble telescope at earth and didn't adjust the focus enough. I don't feel that way with the HD600, yay for my wallet!


In the not too distant past, I finally got to try these beauties with a balanced cable, thanks, @pedalhead. I hooked up some Cable Pro Panorama balanced cables, plugged them into the balanced headphone out on a LH Labs Pulse Infinity + LPS stack and pressed play. The sound stage expanded dramatically, note impact and fullness shot up, and I found these inexpensive used purported to be mid-fi headphones performing on par with MrSpeakers Ether playing out of a single ended amp. I didn't do a direct head-to-head with both having balanced cables, and both playing out of the same amp (the MrSpeakers Ether was playing out of a special Cary Xciter Moon Audio upgraded valve amp), but damn those HD600s scale beautifully. At the Cambridge Head-Fi meet in April I had a similarly surprising experience with the Icon Audio HP8 MkII valve amp (there is one in a used shop down the street from me, very tempted). The soundstage exploded at me like a pile of black cat fireworks on the 4th of July with insufficient length faulty fuses. Luckily, no one was injured.


I think everyone should own the HD600. If nothing else, it is a way to keep more expensive headphones honest. I know that I won't be buying a MrSpeakers Ether after hearing the HD600 with a middle of the road balanced cable, the MrSpeakers just isn't worth $1200 dollars more to me. I've also had the privilege of hearing this with the iFi iCan, and can say that the bass boost on the iCan made it sound like the headphone I've been wanting. The iCan and Micro iDSD are stellar choices, by the way, and drive the HD600 beautifully. One big advantage of the HD600 is it's neutral signature. If I listen with these, I know that any colour I'm hearing is from the source or the amp, so they are very good headphones for critical listening.


There is one caveat I should apply: my HD600s have been modded. I removed the neutral acoustic foam and replaced it with what is referred to as tights in Britain (panty hose in the USA). This mod opened up the soundstage a little and made the HD600 a little brighter and crisper. Not everyone prefers it this way, and when listening to my suddenly bright Feliks Audio Elise tube amp (it's the C3G tubes) it can be a little fatiguing. The HD600s have a similar signature either way, so I'd advise people to try both ways. You can put the foam back in and tights cost next to nothing. I'm curious to try with a bit thicker acoustically neutral material to tame some of the overbright pairings. Speaking of pairings, for 300 ohm headphones, these are actually pretty easy to drive. They are listenable out of my Dell Vostro's headphone jack, and my DX50 sounds good with them. More power is better, especially for bass performance, but is not required for an enjoyable listen.


If you don't have these headphones. You should remedy that, unless you are a basshead. End of review.


Pros: The benchmark for everything else

Cons: Intrinsic design elements (i.e., they're open), underrated because they've been around forever

If this is your first foray into high-end audio, you're listening at home, and you can afford a decent amplifier, buy these cans before you splurge for any others.

Let me first attempt to burnish my credibility. I've had my HD600s for a few weeks. I'm not Steve Guttenberg and I haven't heard every system on earth. I have installed a number of 4-figure 7.1 systems, designed and installed my own room correction, and annoyed the Magnolia people at Best Buy by spending way too long running my own demo material through 5-figure Martin Logan electrostats. Also, I didn't spend my youth at KISS concerts, so at least for now, I'm not deaf.

Some cans I've owned or still own:

Grado SR80 (open, dynamic, $100)
Sony MDR-7506 (closed, dynamic, $100)
Oppo PM3 (closed, orthodynamic, $400)
Hifiman 400i (open, orthodynamic, $500)

I compared all of them back to back with these HD600s for many hours through a huge variety of well-recorded material, in all cases with an O2/ODAC. This latter component has ruler-flat response and zero audible distortion; I'm not messing with the output with anything that might favor one can at the expense of another.

My short take is this: start with these HD600s. Mixing, pleasure listening, whatever; if your environment allows for open cans, start here. Nothing cheaper is a more complete product in aggregate. You can spend more and get improvements in some areas, but almost always with commensurate disadvantages elsewhere. Plenty of folks with $1500 HD800s keep their HD600s anyway for when they get tired of the pointed treble of that otherwise stellar can. Orthodynamics and electrostats will top them in the midrange and highs, but often lose on bass impact.

Start with the HD600 so you can find out what you like. Because it's been around for 20 years as an audiophile benchmark that everyone's heard, you can find endless measurements and comparisons. A sentence that starts with, "I like my HD600 except for ..." is likely to bear more fruit than any other reference.

That in mind, let's talk about how they're designed and how they compare with the others above.



Headphones are just small speakers. With any speaker, you only want to hear one side. The other side makes the same noise at the same volume, but reversed in phase. If you could magically direct both sides at each other, they'd cancel out. (This is incidentally why it's important not to wire a channel backwards in your home stereo. Weird frequency nulls ensue.) We therefore need to do something with the reversed signal so it won't pollute the primary.

Closed cans (and conventional box speakers) cover the back of the driver with baffling material to absorb the sound energy. While this approach doesn't want for accuracy or frequency response, it does tend to make the listening space sound smaller. Open headphones (and "infinite baffle" speakers) solve the baffling problem by not solving it; they just vent the back of the speaker into a huge space. Great for acoustics (no need to account for backpressure and the like), but at the cost of treating the missionary one seat over to your collection of Eazy-E.

Sennheiser assumes you're listening at home with this can, so they've opted for an open design.


Comfort is excellent. I have a big head and big ears. There's a lot of compression and I had to stretch the band a bit. After that, the light weight and plush cups that actually fit around my ears were easy to forget. The SR-80 are on-ear and uncomfortable, the PM3 are on-ear (for me) and very uncomfortable, the 7506 are on-ear and equally comfortable (because they have no clamping pressure), and the 400i are over-ear and equally comfortable.

Treble is very good. Clean, not strident, and neutral or very slightly forward. On par or better than the 400i for most material. The PM3 is noticeably recessed, but otherwise excellent. The 7506 has a somewhat forward mix with at least one frequency peak that can make it sound thin. The SR80 is quite sharp and tiring with trumpets, violins, and so on. This same treble overemphasis can add life to otherwise dull recordings.

Midrange is excellent. The 7506 sounds fairly good, but a bit "fake" and radio-ish back-to-back with the others. The SR80 has a large emphasis here suited to solo vocals, but becomes fatiguing quickly on any recording with more than a few things going on, particularly modern rock or pop. The 400i is stellar. The PM3 is almost as stellar, though ever-so-slightly colored. The HD600 has a very subtle, pleasing coloration I didn't catch until I equalized it. Detail resolution is slightly behind the orthos.

Bass is excellent. Both orthos play a little deeper and with better definition, but lack the HD600's "punch." The 7506 is decent here. The SR-80 might as well not have bass at all. There's a definite argument for the PM3; I might even prefer that one because, like all good orthos and unlike conventional dynamics, there's less distortion at low frequencies. Very pure, distinct tones.

My best description of the HD600 is "euphonic." There's nothing wrong with the sound. It doesn't sparkle or pound, or whatever wine-review description accompanies cans that try too hard. It's the kind of sound that makes you wonder where the last three hours went.


You can't talk about an output device without a parallel discussion about the signal chain. That includes your audio file, a DAC, and an amp.

The importance of file format is overrated. No one's ever been able to reliably tell the difference between 44 KHz / 16-bit CD "Redbook" audio and any ostensibly better (e.g., SACD, DVD-A) digital format. Surround sound and the limited dynamic range of analog records might be pleasing to some folks, but for pure 2-channel listening, there's no point chasing anything better than a CD .

In fact, even lossy compression may suffice. Much of the vitriol directed at lossy file formats stems from bad encoders. If you converted your CDs to MP3 at low bitrates with whatever terrible encoder we had fifteen years ago, you'll probably catch some noises you won't like in some material (e.g., a subtle warble in the ring of a cymbal). But modern 256 Kb/s AAC (Apple's preferred format) or 320 Kb/s MP3 encoded in the last five years? The confluence of factors necessary to be able to distinguish it from the original source (trained listener, good hearing, great gear, isolated sound, repeated listening, looking for that specific flaw) is so rare as to be irrelevant.

DACs (digital to analog converters) take your MP3, FLAC, MP4, or whatever digital signal and convert it to an analog signal that can be amplified. They're not that complicated; this conversion is very much a solved problem. Or would be if not for the lack of a line-out to skip the amplifier stage in most audio devices, or the tendency to bury the poor DAC among other noisy components that pollute the sound (read: every motherboard ever). If you decide you want a separate one, anything actually labeled as a DAC (ODAC, Modi, whatever) is fine. I spent a lot on an ODAC because it measures well enough never to need upgrading, but honestly, you could replace it with a $30 Fiio DAC and I might not notice.



Amps have one primary purpose: make the cans play loud enough. Your laptop, phone, iPod, and sound card all have amps already. Whether any particular amp/headphone combination plays loud depends on the sensitivity (dB/mW) of the headphones, their "ohm" rating (their input impedance; the electric equivalent of backpressure), and how much power the amp can output at that ohm rating. Cans with low impedance (e.g., 20-30 ohms) and high sensitivity (100+ dB/mW) are easy to drive. You could run them to deafening volumes off an iPod. Higher impedance cans, not so much. These HD600s have high impedance (300+ ohms) and middling sensitivity. They need more power. They need an external amp, whether portable and battery-powered or a metal box at home.

Just for kicks, let's do some math to prove the point. Loudness is all about decibels. Deafening is 120 dB, loud is 90 dB, and libraries are 40 dB. On this scale, things sound twice as loud every +10 dB, but every +3 dB needs double the power. You probably want to be able to hit at least 110 dB for transients. Maybe 115 dB if you don't like your spouse and want to never hear them again.

The iPhone 6 has pretty typical power output for a portable:

Driving 15 ohms: 45 mW
Driving 30 ohms: 25 mW
Driving 300 ohms: 3 mW

The scale is linear: double the ohm load and you (in physics land with spherical cows and amps that don't run out of current or voltage) cut the output wattage in half. These HD600s are 300ish ohms with sensitivity around 97 dB/mW. The iPhone manages 3 mW for a load like this, so we're looking at maybe 101 dB max. Weak sauce, particularly since that's the loudest possible volume and the average volume for most recordings (that aren't Metallica) will be quite a lot lower. (If you raise the average levels with a maxed-out amp, the peaks won't get any louder, but they will clip and distort.) Compare the PM3: that one does 101 dB/mW with impedance around 30 ohms. With 25 mW from the iPhone, we end up at 115 dB; much more potent. You'd need 60 mW at 300 ohms (about 25 times as much power) to get the same volume out of the HD600.

After power, the next challenge for the amp is to not ruin frequency response. That's hard for one big reason: the impedance of dynamic headphones (all of them unless labeled orthodynamic or electrostatic) changes with frequency. It might be 200 ohms at this frequency and 400 ohms at another. If the amp's output impedance is zero, that doesn't matter. If it's more than zero, the voltage sent to the cans (and by implication how loud they are at that frequency) will change over the frequency range. Whatever response curve Sennheiser had in mind ("Ve shall haf 14% less zeebilance"), high output impedance can result in something very different. This is why it's hard to take subjective opinions seriously if you don't know how the headphones were driven.

There's another benefit to low output impedance: better bass control. Speakers tend to get sloppy and distort with frequencies near their resonance peaks. That manifests as a muddy, definition-smothering bass hump. The best way to prevent this distortion is with electrical damping, the ability of the amp to electrically prevent unwanted movement (in the same way that it's hard to spin a motor if you've shorted the power terminals). To keep the bass tight and changes in frequency response inaudible, the amp impedance needs to be, if not zero, at least 8 times less than the headphone impedance. A few inexpensive devices pull this off with just about every can (e.g., the original Sansa Clip+ that measures 1 ohm), though not many (the various iPhones tend to be 5-10 ohms).

Everything else about amps starts to get subjective. To me, the perfect amp has zero distortion. To the folks buying tube amps, distortion is the whole point. Same thing with deviations to the frequency response curve; best-case, it's flat over the entire range, but if the "house curve" of your headphones is the typical V-shape with an emphasis on bass and treble, an amp that rolls both ends will make the cans an easier listen over the long term. Tube amps usually attenuate the high end; since the classic "audiophile" curve has strong treble to emphasize detail, softening that treble peak quite often sounds better.

Anyway, long story short, if the open design of these HD600s didn't already to consign them to home use, their high impedance almost certainly will unless you want to supplement your traveling kit with something like a Fiio E07K.

HD600 vs. HD650:

The HD600 is one of the most neutral headphones available. Everyone says that about speakers they're used to that don't have glaring response anomalies (and sometimes even if they do), but it's true here: the correction to flatten the HD600's frequency curve is minimal. Music tends to be mastered with a neutral output device in mind; if your hearing isn't unusual, neutral cans are likely to sound good over the broadest cross-section of material.

The HD650 is the same experience less some treble. It's constructed almost identically to the HD600; the $100 price difference is a marketing maneuver that has nothing to do with sound quality. Rolling the treble lends a "warmer" and slightly less detailed sound that'll flatter music mastered "hot" or with excessive treble or bass equalization. ("Warm" in audiophile parlance is akin to warm and fuzzy; "hot" mastering implies that the sound engineer compressed the dynamic range to make everything loud.) The HD650 also won't draw quite as much attention to themselves. Whether that's better is personal preference. The HD700 and HD800 take the opposite approach: you're getting detail whether you want it or not.


Incidentally, not all "detail" is the same. Detail comes from boosted treble or better drivers. Lesser cans favor treble. Bumping the high range sounds clear and vivid on first listen, but quickly becomes fatiguing. (Bose speaker demos are notorious for this.) Better cans opt for more powerful, higher-impedance, lower-distortion drivers (or different technologies entirely as with electrostats) so intrinsically revealing that the manufacturer can use a more relaxed tone curve. The most detailed dynamic cans (i.e., the HD800) have only a mild treble bump. Less, even, than the HD700, which makes do with a less sophisticated driver. It's unsurprising, then, that reviewers tend to find the HD700 a little harsh on direct comparison.

You could achieve the HD650's sound by plugging the HD600 into tubes, but if that's really what you want, there's a better way.


Here we enter controversy. Audiophile purists believe in maintaining the integrity of the signal from recording to output. 24-bit audio, SAC-D, fancy cables, and giant Class A furnace amps are not out of place in this crowd. I respect the motivations for that view, but I've abandoned it with the HD600 for the better. We've had enormous advances in signal processing over the last twenty years. The HD600 is a mechanical device. It doesn't, and can't, have an perfectly flat frequency response. The cups and driver enclosure impact the sound too much, even if the driver itself could be made perfect, which it can't.

But if we measure the curve, we can recreate any frequency response we want by digitally modifying the input. This is DSP: digital signal processing. The software equalizer in iTunes is a basic DSP, as is Autotune and every "enhance" button you've ever seen in a music player. The processing is almost never "free" (in the sense that it'll only have positive effects), but the benefits can vastly outweigh the downsides.

To jump straight to the point, a company called Sonarworks has measured and corrected the HD600. The plugin is about $70 from them, and in addition to making the HD600 a legitimate tool for mastering, it also improves ordinary listening sessions quite a lot. Bass impact in particular, always a weak point with headphones, sounds speaker-like through it. The Sonarworks VST plugin works through a VST-supporting player like J-River Media Jukebox or any of a dozen VST hosts (e.g, Audio Hijack on Mac). If you don't like the result, you can emulate a variety of other headphones. Grado GS1000? Sure. HD650? Yep. I hate spending money on things that aren't hardware, but in this case, I'm sold.

It gets better. After you've installed that, download Wave Arts Panorama5. It's a very powerful binaural emulator that'll take recordings out of your head and put the singer in front of you. Real binaural recordings use a dummy head with physical ears to create positioning cues that can sound wildly more realistic. Panorama (and free, albeit much inferior alternatives like 4Front and Psypan) use HRTFs (head-related transfer functions) to modify a conventional signal with math to recreate the dummy head effect. Done well and matched to your ears, it can leave you agog. ("Why is my neighbor pounding on the ceiling? Oh. Wait.") Likewise a program called "Out of Your Head," which is expensive because the author measured a bunch of high-dollar audio setups. Want your HD600s to sound (exactly) like a movie theater? That's now a thing.


To wrap this novel: definitely try the HD600s. They're frequently on sale in the low $200s. There isn't anything as good anywhere near that price. To give perspective, after demoing them against the 400i for a month, an ortho at twice the price that everyone raves about, I returned the 400i. But I'm a home listener. If you're on the go, have small ears, and don't want to annoy everyone, try the Oppo PM3 instead. Truly, you can't go wrong with either.


Pros: Sound signature smoth fatigue free sound while still remaining fairly detailed, Fully modular design

Cons: Not overly flashy the build doesn't really match the price, Bass doesn't extend overly low, Standard cable should be better

In my humble opinion the Sennheiser HD600 is by far one of the best sounding dynamic headphones on the market period hopefully you'll agree with me at the end of this review.


Frequency response (headphones) 12 - 39000 Hz
Sound pressure level (SPL) 97 dB at 1 mW
THD, total harmonic distortion 0,1 %
Contact pressure ca. 2,5 N
Ear coupling circumaural
Jack plug 3,5/6,3 mm stereo
Cable length 3 m
Transducer principle open, dynamic
Nominal impedance 300 Ω
Weight w/o cable 260 g

Nothing really much to see here other then the fact this is a very high impedance headphone with a moderate sensitivity which means this headphone clearly NEEDS good amplification. Self powered small USB dac/headphone amplifiers can drive this headphone fine however for the best experience I recommend at least a Schiit Magni or O2 as both these amplifiers swing plenty of current into a high impedance load. These headphones will play well out of a receiver (as long as its a resistor based headphone out not opamp), integrated amplifier and preamp aswell (I've used it on my vintage mid 70s era Sansui integrated amp and it drives the headphone very well to extremely loud levels too). If tubes are your thing these match perfectly with all OTL Tube Amplifiers due to their high impedance.

The Sennheiser HD600 is a unique headphone in the way that every part can easily be removed and replaced and spares are readily available and when I mean every part I literally mean everything, you don't even need any special tools to disassemble it everything just snaps together. Fit and finish are really nothing to write home about, it seems durable enough never had issue with my headband cracking/snapping (which is supposedly an issue) I've had the headphones for a while and im not precious with them either. The overall build quality is fine and it does the job, it isnt spectacular by any means especially at this price point. The standard cable is pretty lame I destroyed mine in just a few months (the part that connects to the earpiece). Replace this with a HD650 cable which is much more solid and better made cable and no before you ask it does nothing for the sound don't try to tell me otherwise I don't believe headphone cables make any tangible difference, although don't let it stop you spending 5 or 10 bills on a custom cable though if that helps you sleep at night.

If you can get over the initial clamping force that goes away slowly with time these are a very comfortable headphone the pads are soft and plush and feel good on the head. You can hardly feel the headband on your head there is no pressure points there other then the clamping around the ear. People stretch the headband to help loosen clamping force but I do not recommend this as its not needed and you can potentially break it. It will go away with time.

The Sennheiser's sound signature can be described as neutral with a slight warm tilt although not overly rolled off at all. Its a smooth sounding and forgiving headphone not fatiguing to listen to in the slightest but still remains detailed enough to be somewhat analytical (Which the 650s don't do IMO).The bass is good just don't expect it to extend super low, Its right were it should be not overly abundant but enough for the headphone to not sound anemic in the slightest. This is why to me the HD600 to strike the perfect tonal balance for a headphone.The 'veiled' term used by some to describe these headphones a load or rubbish and anyone that believes in this probably listens to obscenely bright headphones. Soundstage is good but not amazing for open headphones if you want a headphone with a superior soundstage have a look at the K7xx line of headphones or step up to the HD800 which especially the latter offer a massive sound stage. 

Ill give you my listening experience with my 3 amplifiers source is music files from my PC -> Optical in to my DacMagic 100

Woo Audio WA6
If I blindfolded you you probably wouldn't be able to tell this is a tube amplifier. The HD600s sounded great for this amp however the low end wasnt as present or as tight as it was with my other solid state amplifiers. Highs where crisp and clean nothing rolled off and mids were present with great punch and clarity. There really isnt that much more say about this amplifier. If I had a bottlehead crack or Woo Audio WA3 there would have been much more to say and made for a more interesting comparison as these are both OTL which greatly alters the sound signature.

The wire with gain as people call it again nothing really much to say here either the HD600s paired wonderfully plenty of power to drive these cans with ear shattering levels. Bass was more prevalent on this amplifier then on the Woo (probably due to the higher dampening factor). Mids and highs seemed very similar, so similar infact the only difference I could pick was that the highs seemed to be more prevalent on this amp but thats not to say that the Woo rolls off the higher frequencies that would be an exaggeration, best way to describe it would be slightly smoother sounding.

Gustard H10 (modified v200 clone)
Pairs excellently with this amplifier. Bass was very controlled and tight and more prevalent then on the O2 (which would make sense as people describe the V200 as a warm sounding solid state amplifier) other then that it was very very similar to the O2 across the rest of the frequency spectrum. Keep in mind this amp is complete overkill for these headphones.

The HD 600 is a forgiving headphone but at the same time is still detailed enough to give you an accurate portrayal of whatever it is you are listening to. As you can clearly see it does everything rather right and that's a big call to make as its very hard to find a headphone you can actually say this about. No headphone is perfect even top of the line flagships which cost many times more then this. The HD 600 isn't perfect either but for the price point this headphone is available for its as close to perfect as you can get.


Pros: Very detailed. Balanced. Good soundstage. Absolutely amazing mids. Entirely modular, with all parts replaceable.

Cons: Bass could be a little tighter. Some would say subdued treble, but I'd say it's at a very realistic level. Soundstaging has room for improvement.

Note: The price paid is used from Amazon Marketplace.  Also, I've duplicated my review from the other product listing here on Head-Fi.  If it is possible, the two HD 600 pages ought to be merged.


The first thing about these the HD 600 is the excellent tonal balance - it's never harsh, but the highs are still there and very detailed.  Sometimes the finest details may get lost in very complex music thanks to being overshadowed by other parts of the music, but the resulting detailed smoothness is a very good thing.


The mids - ahh, they're to die for!  They're the highlight of the headphones.  They're detailed and lifelike, similar to the highs.  But they're so realistic sounding - even so more than the HD 800 and Beyer T1 I've auditioned.  As far as I'm concerned, the HD 800 (haven't heard the HD 650) still falls short here in comparison.  Guitars, brass, saxes, vocals, and more sound so much more realistic (and and have more visceral impact) than anything else I've heard (my new Alessandro MS1is come close, but not as much with the low mids).


Bass is fairly tight and at just about the right level for all types of music.  You'll never make anyone happy with any given quantity of bass, but I think these are as close to a neutral level as you'll get.  Very low bass can be a little loose, and rapid bass notes aren't as distinct as the HD 800, Beyer T1 or DT 880, but it's still excellent overall (and especially compared to lesser headphones).


Their soundstaging is very good - but there are, of course, far superior headphones for this.  Depth is good, width is good, and precision of placement is good - again, a very balanced sound.  The sense of spaciousness (a function of all three factors) falls a little short of the AKG K701, and of course the HD 800 and Beyer T1 - but of course is far more evident than the close-in Grado sound.  The "It sounds like they're playing in the room with me!" sensation never really happens to the same level that my speakers (Infinity Renaissance 90) can provide.


The build quality is very good - the headband and frames are supposedly made of carbon fiber, but after inspecting them (and seeing photos of cracked headbands) I believe it is probably a carbon fiber reinforced plastic instead.  Less impressive to your friends, perhaps, but an excellent material nonetheless.  They do of course feel slightly plasticky as a result (but it never feels like cheap plastic).


They're quite lightweight, and the padding is excellent - the velour earpads and headband are very comfy.  I know some complain about them being too tight - I can't really comment, since I bought mine used.  I never found them to be too tight myself.


They stand up to abuse admirably well - mine have lived in my backpack for four months straight and only have superficial damage to the grills (they get dented when sharing the backpack with my Nikon) to show for it.  They haven't been babied at all - just no abuse like trying to bend the headband over on itself...  Anyway, since everything is modular, you can easily replace any part that has broken.  I just got new pads and a cable to replace the worn originals.


The marbled finish does wear off a little over time, but it has yet to become detrimental to their appearance so far.  Oh, and by the way, the finish looks a whole lot cooler in person than in photos of the headphones.


I've found amp'ing them not to be as difficult as some seem to think.  A/B'ing my uDAC (my main source and amp) against a Beyerdynamic A1 amp, I really couldn't consistently tell any difference between them other than ultimate power output.  The Sansa Clip+ actually does an admirable job running them up to moderately loud levels (not short-term ear blasting, of course), and never clips with them when playing music.  It does, however, sound slightly (yet noticeably) less dynamic and with a narrower, less well defined soundstage in comparison to the uDAC. I forgot that I have a crossfeed plugin (HeadPlug MKII) running on Winamp, so I have to retract those opinions for now - although it does stand for now that I can't get a crossfeed with the Clip (without using an amp with one).


So, the verdict?  These are amazing headphones, deserving of their place as one of the best dynamic headphones available to this day (15 years after their first introduction!).  Their smooth, slightly warm (not dark!), but very realistic and - yes - exciting yet neutral sound is near-perfect in balance.  Soundstaging is perhaps the area I would like to see the most improvement, but it is good in this respect already.


You'll have to pry them out of my cold, dead hands.

Sennheiser HD 600

Sennheiser HD 600 Headphones ( ear-cup ) - gray, black

FeatureDetachable, Kevlar-reinforced oxygen-free-copper cable with very low handling noise
Height0.39 inches
Length0.39 inches
Weight0.57 pounds
Width0.39 inches
List Price$519.95
Package Quantity1
Product GroupCE
TitleSennheiser - Sennheiser HD 600
Batteries Included0
Is Autographed0
Is Memorabilia0
Operating SystemN/A
Warranty2 years warranty
Special Featuresnv: Transducer Principle^Dynamic, open | Frequency Response^12-39,000 Hz | Nominal Impedance^300 ohm | Connector^3.5 mm mini-stereo with 14 adapter | Characteristic Spl^97 dB | Ear Coupling^Circumaural | Headband Pressure^2.5 N | Distortion^Less than or equal to 0.1 | Weight Wo Cable^9.2 oz
Model NumberHD 600
Model Name/TypeMPNEAN/UPC

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Troubleshooting/Known Issues:

Some HD 600s are known to ship with the cable inserted loosely. This can cause the sound to cut out of either side when the cable is moved. To fix this, push the cable in hard, not just a little hard, but push it in with the angry fist of a god hard. Once it's in hard, it should stay that way on it's own.



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