AKG K 550

Average User Rating:
4.09722/5,
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  1. Vuroth
    4.0/5,
    "First foray into price range"
    Pros - Comfort, isolate very well
    Cons - Very long cable
    Bought as upgrades to me 13 year old Sony MDR-V600s.  Can't really assess their audio quality, other than to say they're a clear upgrade from the MDR-V600s.
     
    I bought them for computer use, both gaming and .flacs.  Performs very well at both.  Can be worn for hours on end.  Cuts out ambient noise, and so far my wife hasn't complained about being able to hear them when she's working in the same room.
     
    Tried using them on the bus, but they're not terribly well suited for portable applications. The cable is long and straight, and overall the set is a bit big to be carted around.
     
    Still, very happy with the purchase.
  2. WiR3D
    3.0/5,
    "Unfinished AKG"
    Pros - Soundstage, Imaging, Isolation, clarity (for the most part) and construction
    Cons - Resonating upper mids that destroys musical pleasure.
    RythmDevils review covers everything so I am going to keep this short.
     
    It has issues, I have burn't it in plenty and used equalizers, and played with many variables. 
     
    Movies
    This is a strength of this headphone, it has amazing isolation and soundstage and imaging, even better then the Denon D2000 at this price, so for a closed headphone its a real treat. 
     
    Music
    Personally I think it has too much treble period, but turning it down helps, the strengths listed above hold true, but Harmon Kordon clearly did not finish this headphone, and unfortunately it seems to be a trend for them to push out headphones with issues (AKG K701 for one.) The upper mids has a resonance to it that can drown out some portions of songs so badly its almost unforgivable. A good example is Lana Del Rey.
     
    Conclusion
    SO I would recommend this for movies, but not music, many people who have bought this still enjoy it, but most of them have noted something wrong, and the resonating upper mids is what it is. For people with experience with equivalent gear its a big issue, but as a first step into this tier of product the odds are you won't notice, but you shouldn't waste your money getting less then what you are supposed to at this price. 
     
    So a firm NOT RECOMMENDED.
     
    AKG I am disappointed.... And I loved my AKG K242HD so much too.
  3. tracylynn MkII
    4.0/5,
    "A new AKG sound you will remember"
    Pros - Good isolation, very comfortable, devilishly handsome, excellent soundstage and sound quality for a closed headphone at the price.
    Cons - No detachable cord, not a closed K701 if that's what you want.
    When I first came back home to this package, I couldn't wait to see what AKG had done this time for one of their fans. Quickly plugged it into the e7+e9 alongside the K702's and started up the music.
     
    My first thoughts were that the detail and clarity of the 702's wasn't there, but then I realised that it was because I was having to actually focus on a more prominent bass as well as the trebles and mids! I had gotten strangely addicted to the dry analytical and distant feel of the 702's and my only other closed phones from this century I had were the Superlux 662B's (with velour pads) which had been collecting dust for some time. As I continued to listen, I realised that the mids on the K550's were really creamy and brought a smile to my face in a way the 702's couldn't. That isn't to say the mids on the K702's are bad, they are excellent, but for the first time I am seeing why some people may prefer to go for warmer sounding phones, whilst sacrificing some of the "true" sound of the music.
     
    When listening to Bach's suites for violoncello the sound actually brought a lump to my throat it was so beautiful, with comparable clarity to the K702's but a closer and "friendlier" feeling to the instruments. I had heard people mention that these headphones were not compatible with classical music but I would definitely have to disagree. The soundstage is more than competent, and significantly better than my closed 662B's and I don't feel I would anger too many people if I said one could compare the 550's soundstage to that of an open headphone, and for this I really must applaud the people who worked on this beautiful product. The imaging may not be perfect, but I felt that I had more height than with the 702's, which feel like a flat plain which expands out into the distance, where the 550's are closer but more layered, which was noticeable especially when listening to choral pieces.
     
    Moving on to techno music and the bass seemed overwhelming compared to the 702's that I had grown so used to, which again, worried me slightly at first, but I am starting to appreciate the bass more than I could really with the 702's. If I can I would like to come back to this again maybe in a few weeks or months time, to see how I feel about this. I would like to say that the kick the bass has to it is amazing and something I have not heard with my 702's at all, which makes me feel like I have been missing out, at least with some genres of my music.
     
    Moving onto Toho@Arena, a song that starts with cymbals opening I really appreciated the crisp sharpnesss of these phones, that I find again are comparable to the 702's, but in the overall package of bass, treble and mids and how they work together in these phones, one gets in my mind a very different feel to the music than with the 702's and if anyone thinks they can get either headphone to substitute the other, I would have to disagree with them wholeheartedly.
     
    I did however take this opportunity to test how much sound leaks *out* of the headphone by placing them flat on my wooden desk. At first I wasn't impressed until I realised the 702's were the ones producing all the music behind me. I unplugged them and was immediately taken aback by how little these leaked. I had them up to 10 o'clock on the e9, which is probably slightly above what I would usually listen to whilst on commute, and think that the person next to you on the bus would definitely have to be quite picky to become annoyed at the small amount of volume coming out of these headphones at normal listening levels!
     
    As for fit, I have always found that despite the fact a lot of people seem to find AKG's difficult to seal on their heads, they always suit me just fine. As these headphones have a nice numbered system of notches on the metal, I can always know to go for 6 on each side, in case someone else has been wearing them. The numbers go from 1-12 and so in my mind they should be able to fit most heads without a problem, unless you are trying to fit these on a small child or have an exceptionally large head (no offence to anyone who can't fit in these!).
     
    As far as comfort goes, the pads are made of pleather yet feel like a premium good and I am very happy with their performance. The padding on the headband is very small and takes a step away from the iconic self fitting AKG headband, to make these viable as portable phones without being laughed off the bus or train and are significantly more comfortable than what feels like a hide band on the 702's which at least at first, dug marks into my head after long periods of wearing (this still happens, but to a lesser extent now) which was genuinely physically uncomfortable. Despite the sleek form factor of the 550's head padding, it is comfortable for long periods of time surprisingly and even if not at the level of the Senn 580's it gives sufficient comfort for most of us to really have nothing to complain about.
     
    Cable: I really do not care for people who spend almost as much on cables as they do on their headphones. The plastic around the cable of the 550's is thicker than that of the 702's and feels like it is of a much higher quality (the 702's cable really disappointed me since the start as it feels more cheap and flimsy, so I am just happy I have the ability to replace it). The 550's cable has to be good however, as it cannot be removed sadly, and time will tell whether this will be an issue if it is being bent about in a bag on the move or not...
     
    Value: at £180 some may view these as expensive, but seeing as they are over £40 cheaper than the beats studio headphones (at least on Amazon), in my opinion more stylish, if not the most stylish portable closed headphones, with a crisper and more refined sound, and a superior soundstage there is a distinct realisation that for headphones of this quality, you really aren't paying too much, even if you paid the full rrp, which I find I can rarely say when it comes to AKG products. Maybe you won't like me comparing to the beats, as it is like beating on some child who has already had his lunch money taken, but I think that is who AKG are trying to compete with with this model. The AKG's are the Blackberry to Beats iPhone. One may be more subtle and won't go out of its way to part you with your money while the other will throw all the cheap gimmicks and celebrity backing and funding it has for advertisement in every mainstream music video you will see nowadays. I know what my preference is, and I'm sure that will be share by 90% of the community here also.
     
    This is my first ever review of a pair of headphones, and I hope it is up to the high standards of these forums and I may well edit it as I use these more and more in the future.
  4. rhythmdevils
    1.5/5,
    "AKG K550 Review - An attractive and well built closed headphone that has many strengths, but ultimately falls short on sound quality."
    Pros - Looks, Build Quality, Decent tonality and fairly flat FR from midrange down to bass, no treble emphasis, decent soundstage for a closed headphone
    Cons - Serious peak and resonance in one spot in the upper mids ruins an otherwise decent headphone
     
    First Impression
     
    When I first listened to these headphones, my initial two thoughts in this order were:

    1. Wow these sound pretty fast and also fairly even

    - 15 seconds later -

    2. Wow something is wrong with the upper mids
     
     
    Packaging
    who cares
     
    Build Quality/Aesthetics
    These headphones feel very well built.  I can't speak to their longevity or durability, but they are nice to hold, feel sturdy, the movements are tensioned well and feel solid, there's no creaking of cheap plastic.  The finish feels durable and well made.  One of the better headphones out there IMO for it's apparent build quality and finish. 
     
    They look very nice when sitting on your desk, and in pictures.  A good design, but they are one of those headphones whose looks don't entirely translate to looking good when worn.  They have all the right shapes and dimensions relative to each of the parts, but the whole thing is just too big to look very good.  For their size, I'd say they don't look too bad as they are slim, so they don't stick out horizontally very much and give you the alien mind probe look that grados and many closed headphones do.  The headband is slim too since it comes together at the top of the cups, so it doesn't have that gigantic and unnatractive arc that the older AKG's have like the K240.  The headband hugs the sides of your head well.  Still, the cups are huge even on my big noggin.
     
    Comfort
    Very good except that the earpads just aren't thick/deep enough.  Huge design flaw IMO because everything else was done very well for an extremely comfortable headphone.  The cups swivel in a really nice way since they have a good amount of friction in the movement, so you can place them at the right angle for your head, and they stay there.  Headband is comfy and is the right shape.  But the earpads aren't thick enough to keep the grill over the drivers from hitting your ears.  With such huge, soft earpads this is a pretty big fail IMO.  I tried putting the foam donut shaped inserts that Hifiman has in their earpads into the K550 earpads, increasing the thickness, and it had no effect on the sound and made them supremely comfortable by simply increasing pad thickness.  So as long as you don't have huge ears they should be fine.  Or if you don't mind a little pressure from the grills.  it doesn't hurt too bad on my big ears, but it just would have been so easy to avoid this situation.  I get the feeling they didn't do much real world testing on these and got carried away with computer modeling. 
     
     
    SOUND QUALITY
     
    They overall have a flat, balanced sound from bass to midrange with good tonality, and with a treble presence that is in balance with that part of the spectrum, which is very rare for headphones.  But there is a serious problem spot in the upper mids that ruins this headphone.  A resonant peak in a small part of the upper mids.  I would describe their overall sound as a slight rainbow shape FR, though leaning upwards towards the upper mids for enhanced sense of clarity.  They also can sound kind of fast for a closed dynamic.  Not ortho or stat fast by any means, and not Grado fast, but maybe 6/10 for speed.  Not bad. 
     
    Bass
    Good not great.  It extends down plenty low, it seems flat, there's no apparent midbass hump, bass does not bleed into the midrange or vocals in the slightest but is also well integrated with the midrange.  There's no "bass + mids"  or subwoofer effect where the midrange and bass feel separated by gaps in the spectrum.  They have a cohesive transition from bass to mids, likely from a fairly flat FR.  But bass is a bit low in quantity despite what the FR measurements suggest.  The bass is in the background on these phones, with emphasis on the midrange.  Not for bassheads at all.  Bass is not bad quality, but it sounds kind of dry and a bit soft, whereas better headphones have more definition and dynamics and detail in the bass.  Not bothersome, especially since it's in the background.  I'd describe the bass as being just enough to provide a foundation and not sound too lite, but too low to sound totally neutral- it keeps your attention on the midrange.  It gets out of the way so to speak, for better or worse.
     
    Treble
    I'd say the treble on these is very similar to the bass.  Good not great.  There's no emphasis in the cymbal range as far as I can tell.  If anything it sounds a bit recessed in the upper treble.  Nothing sticks out at you here or is glaringly bad.  But the treble is not that clean or precise sounding.  It is a bit rough/textured or papery sounding.  Like the bass, I'd say it's a backdrop for the mids.  Not a treblehead headphone either.  Yet despite this lack of apparent brightness, these phones have a strong sense of clarity about them.  I think this is what people like in this phone.  They don't sound dull or rolled off or warm at all.  Likely because of the slight lowering of bass volume, along with the emphasis in the upper midrange, the "clarity" range in the FR.
     
    Midrange
    Here's the problem.  Both the bass and treble on these are both presented as a backdrop for the midrange but there's a serious problem in this area, so these phones wind up failling short for bassheads, and treble heads, and then have issues in the midrange.  First the good part.
     
    The heart of the midrange and the lower midrange is done pretty well.  Vocals have both the proper richness for a male voice like Tom Waits or Chis Isaak, which is surprisingly rare- they don't make vocals sound thin despite the lack of bass emphasis.  They also don't sound overly rich at all.  Chris Isaak's voice sounds very good.  Vocals also give the proper air and breadth to female vocals like Emmylou Harris or the Audiophile favorite Allision Krauss.  But sometimes vocals reach up into the problem spot and sound off. 
     
    Upper Midrange Issues
    There is a spot in the upper midrange that has a pretty bothersome resonant peak.  I kept wanting to call it "glare".  The upper midrange glare isn't the most peircing or painful I've heard in a headphone but it is very bothersome and might be described as severely "jarring".  It doesn't seem to cause me to reach for the volume knob as feverishly as some phones have, but it does keep me from turning them up and leaves me in a state of fear wondering when something is going to hit this problematic range and if it is going to hurt, since it seems to be right on the threshold.  Any instrument in that range sticks out way too loud, and looses proper tonality as the sound in that range gets mangled by resonance and takes on a plastic tonality. You can clearly hear the coloration being added to what should be the original signal.  This is partly because it's such a specific problem spot.  You can sometimes hear an instrument or voice go up in the range and suddenly jab at you by suddenly increasing in volume while taking on this plasticky resonant glare.  The decency of the lower part of the spectrum gives it a "surprise attack" quality which is what generates the fear and hesitancy when listening.  If there was an instrument that existed only in this range, I am doubtful you would be able to hear what instrument it was.  Some recordings play well with this problem spot and it's not grossly apparent because of the frequencies being excited by that recording and the particular balance of the recording (if the recording has a peak in that spot too, it's clearly going to be worse).  But even on these recordings, this spot gives the whole spectrum a cheap plastic headphone feel kind of layed over the sound, as if you are listening to some very good throw away headphones.  I kept thinking of them as the best airline headphones ever.  Much better extension, tonality, more flat, but still plastick-y. 
     
    Soundstage
    Overall good size for a closed headpone, has a spaciousness about it, but there's something strange about it as well.  It's almost like there are 2 soundstages happening at once, the lower part of the spectrum sounds more spacious to me than the upper mids/treble, which sounds more constricted.  This gives them a lack of coherency, or a kind of bad crossover effect, where the sound is a bit disjointed.  I think this is because the resonance artifact in the upper mids destroys soundstage by getting in the way of the "trick" the headphones are playing on your perception.  Soundstage is also destroyed by a "driver dildo" that was installed on the back of the driver creating a tiny chamber behind the driver rather than the comparatively larger size of the earcup.  I'm guessing it was placed there in an ill conceived attempt to control the bass, but I have modded a pair of these by removing this dongle, and correctly damping the cups, and the soundstage becomes more coherent. 
     
    Conclusion
    Good looking, sturdy closed headphone that is fairly comfortable and has a mostly well balanced, even sound except for a very problematic part of the upper mids that sticks out sorely and ruins them. However, this part may not bother everyone.  If it doesn't bother you ie if you're not sensitive to resonance or FR irregularities, and you are looking for a well balanced headphone erring on the side of being a bit basslite for the sake of clarity, and you want good soundstage these may be a good choice for you.  If you are not bothered by Grados you may not be bothered by this resonant peak.  however, Grados have much more natural tonality, for example vocals sound more life like.  I recently had an MS1 here and despite their colored signature they sound better than the K550 in every way except may soundstage width.  There's no plastic tonality in the MS1's signature. 
     
    Here is a picture of the inside of the K550's cups.  The lack of damping here contributes to the resonant peak, but after spending time with my modded pair which has damped cups, I have found that it is also being caused by the driver itself.  Damping the cups helps, but doesn't fix the problem.  The small rubber thing in the middle of the light gray circle around the driver, is the "driver condom".  This seals around the driver and makes a small enclosure size behind it.  The light gray area are vents, though they seem to be closed off with solid plastic.
     

  5. JohnnyBlaze554
    4.5/5,
    "AKG K550"
    Pros - Great sound, good isolation, extremely comfortable, neutral, good styling
    Cons - rotate 90 degrees rather than 180, 3 meter cord is long for portable use.
    I just picked these up today so this is just an initial assessment.  These are a great sounding headphone overall but the fact that they are also closed back and still have great soundstage at 300 bucks makes them well worth checking out.  These are very comfortable, and I don't have any problem getting a proper seal with them.  
     
    The only things I have found that I would change about these in a future edition are: the earpieces rotate 90 degrees rather than 180, and the cord isn't detachable like it is on other AKG headphones in the price range.  The reason for wanting the earpieces to rotate 180 degrees is that with the way they are currently set up if you wear these around the neck and fold the earpads flat, as to get them out of the way, the pads are facing up and out rather than down.  If I end up talking to someone quick I like to lay the pads flat against my chest so I can talk to them without having them hear what I'm listening too.
     
    The other thing is that the cable is not detachable although that in itself isn't really the issue for me.  For portable use it would also be helpful if these headphones had a short 4 foot cable but can understand why some people would want the longer 3 meter cable if they were using these for mixing and studio work.  Having a detachable cable would make it easy to pick up a second shorter cable or for them to be able to include it with the headphones. I imagine you could also do a talk through cable in the shorter version as well for people who look for that feature.
     
    These are a great sounding pair of headphones whether you need the isolation of a closed back headphone or not and are well worth checking out.  These are a very revealing pair of headphones, there were parts of some Louis Armstrong recordings I listened to that I had noticed how much reverb there was on the vocals previously.  This was especially present when combined with my portable rig, 7th gen Ipod Classic and Fostex HP-P1, and a little less so on my desktop setup, mac pro and Headroom Desktop Amp.  These are by no means a bass heavy headphone and I would even go to say it is a bit recessed but only slightly.  The bass is very tight and well controlled.  This was something I really liked while listening to tracks by Massive attack. The vocals would seem to take center stage but over all a very neutral sound on these headphones.  The soundstage on them is very good, especially when you consider that these are a closed back headphone.  
     
    I had originally gotten these to use more or less just with my portable setup but I like the sound on them enough that they will likely find there way onto my desk a fair amount as well.
     
     
    Thanks,
     
    Bryan
     
  6. FritzS
    4.0/5,
    "K550 - first view"
    Pros - looks good, sounds good
    first listening
    Children of Sanchez, Chuck Mangione
    CD1 Tr.4 enough space between drums

    good fit on the head
    very good shielding against environmental noise

     
    more coming soon
     
    pics here
    http://www.stockhammer.eu/hifi/AKGK550-main.php
     

     

    First hearing test
    AKG K550 - AKG compared to Q701, K501, K271 MKII, Denon AH D7000
    Source: Marantz SA 7001 KI
    KH Amplifier: Green Solo (GSP Audio), WNA MKII (DIY, modified kit)

    Headquarters: Q701 Earpads have larger diameter, K550 earpads slightly smaller inside diameter and feeling softener - could become a littel more warm during prolonged periods. The two listeners capsules, they can pull out each about 35 mm, good screening.

    Very good shielding against environmental noise (better than the Denon AH D7000).
    Good fit on the head.

    Tues 20th Sept 2011
    K550 after about 4 hours birning in

    Test at the Green Solo (solo has 33 Ohm source resistance and the K550 feels better at the WNA MKII with 15 Ohm source.)

    Pink Floyd Final Cut (Version with - "when the tigers broke free")
    Track 1
    K550 background sound - cars are nearer the as with Q701
    Jingling of coins and finely resolved clearly audible - the Q701 would resolve this a bit finer.
    Track 2
    0:30 K550 the beat is more concise than in Q701
    Track 3
    The K550 sound stage seems a little closer than with Q701, which staggers a bit more extensive.
    Q701 have a little more air between the instruments and singers.
    Track 4, "When The Tigers Broke Free"
    Q701 dry and deep bass, more air between instruments, they are sold more clearly.
    Track 5
    K550 voluminous, closer direct - Q701 dry deep bass, better resolution, more air between instruments.
    Track 6
    as above
    Track 8
    The impact of the grenade at the K550 sounds more real.

    Magic of Himalayas, Mystical Scent
    Track 01 Sacred Book
    K550 deep, powerful bass (but not as extreme as that of the Denon AH-D7000)
    Track 05, 07, 09 - as above

    From now on WNA MKII
    Karajan, Beethoven Smphonies No. 5 & ​​6, Berliner Philharmoniker, SACD
    Here it was found that the K550, the lower source impedance (15 ohms at WNA MKII) and a little more power the amps are better pleases.
    The two symphonies, I listened to without many cross-checks.
    In the heights the K550 is apparently not up as far as the Denon AH D7000, with the latter, I could hear the noise of older recordings.
    Comparisons of the frequency response curves would be a hit - if these curves were already online.

    Chuck Mangione, Children of Sanchez
    CD1 very realistic with the K550. Punchy bass.

    Generally, the Q701 has a more distant, wider sound stage, the K550 closer, more direct.
    The Q701 seems to resolves finer. When K550 in some passages I have a sneaking feeling that he colored a trace. But I might be mistaken as well. It just sounds different than the open-K501, K701, Q701. It just sounds different than the closed Denon AH D7000 too.
    Do not ignore the price differences!

    A cross-check to K271 MKII (nearly similar to K272HD) - the K550 sounds better than the K271 MKII.

    A hearing test, like this, is always a subjective snapshot of a person, and, moreover, depends on the daily constitutional.
    A real assignment and struggled even more with this point allocation (as do some HiFi magazine) is bringing into question.

    To be continued.

    Please excuse my bad english - I used Google translate and www.dict.cc - the original is written in german.