Planar Magnetic Comparison – HE-500 vs LCD-2

Most headphones on the market use a “traditional” driver technology referred to as dynamic drivers. These are much the same as the speakers you see in your stereo system or car with a cone of some sort driven by a coil of wire inside a magnet structure. In the past, planar magnetic technology was a fringe product in the headphone world, but over recent years this technology that was once nearly abandoned has enjoyed a resurgence to create some of the finest headphones on the planet. I’m going to talk about 2 of them here…

Audeze LCD-2

SAM_0151-4The LCD-2 was first released around 2010 and marked the first headphone from Audeze and the first really well-known planar magnetic headphone of the current generation. The LCD-2 has since undergone multiple revisions to tweak and improve on the sound and comfort. My pair are a December 2013 model which were made shortly before the most recent upgrade known as the Fazor. For the sake of comparisons to your tastes in music, the December 2013 version of the LCD-2 brings more treble energy and detail than its predecessors, but it’s still a warm / smooth sounding headphone compared with similarities to the HD650 (although I believe the LCD-2 is noticeably better than the HD650).

To read the rest of this review, please head over to the new Passion for Sound site – it’s sexier and will have more great content coming very soon!

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SoundMAGIC HP200

11010050I have a confession to make. I have completely disregarded the SoundMAGIC headphones for ages simply because of their name. It wasn’t the fact that they’re a Chinese (i.e. not German) company because I love some of the IEMs and headphones coming from companies like HiFiMan. No, the simple reason is that I thought the name sounded a bit dinky and cheap.

It was only because the HP200s were setup as a demo at the recent AV Show in Melbourne that I heard them at all and I was really excited to discover a hidden gem. These are an incredibly well-priced headphone for their outstanding performance and well worth considering for anyone looking at headphones like the Sennheiser HD650s or HD600s.

Overview

The HP200 is an open-backed full-size headphone from Chinese manufacturer, SoundMAGIC. SoundMAGIC built a reputation on their excellent budget IEMs, but are showing with their HP100 (closed) and HP200 (open) headphones that they can play at a higher level too.

Specifications

  • Driver:  53mm dynamic
  • Frequency range:  15 Hz – 35,000 Hz
  • Impedance:  20 ohms
  • Sensitivity:  98 dB / mW (at 1 kHz)

With a price tag at a little over AUD $300, the HP200s are direct price-point competitors for headphones like the Audio Technica ATH-AD900 and AD900X, the AKG K/Q701, and Beyerdynamic DT880 and DT990. That’s stiff competition, but I would also go so far as adding the much praised and more expensive Sennheiser HD600 and HD650 to that mix. Intrigued? I was…

Design & Comfort

11010059These are some nice looking cans – and they feel as good as they look!

They are made from a combination of plastic, metal and faux leather and everything looks and feels solid, but not heavy. When you pick up the HP200s they just feel great – soft and smooth where they should be (ear pads, headband, etc.), and solid and sturdy everywhere else. In terms of design and build quality, the HP200s are easily on par or ahead of every other headphone I listed above as their competitors so we’re off to a good start.

The headband slider is metal over plastic and moves in clearly notched increments. It’s even labelled with numbers painted onto the metal to help you return to your perfect settings every time.

The outside of the ear cups are covered in a gloss black metal grille that looks and feels great. Meanwhile, other parts of the frame are made from high quality soft-touch plastics that feel almost luxurious.

In terms of practical design, the HP200s are basically faultless. Their visual design is a matter of taste, but isn’t going to offend anyone. I personally wasn’t “wowed” by the styling of them, but I would also be very happy to have these displayed on my headphone rack.

Electronic Design

The HP200s have a relatively low, 20 ohm  impedance which helps them easy to get good volume levels from portable devices but can be a double-edged sword because lower impedance leads to less control, especially in the bass and can reduce the overall tightness in the sound of the headphone. If I had to pick a fault with the HP200 it would be this low impedance. Had these been a >100 ohm headphone, they might just have completely dethroned some of the long-term kings of the category. As it is, they are great, but can be a little bit picky with the source / amp used. If you try these or buy these make sure you use them with a source or amp that has an output impedance below 2 ohms. If you listen to them and they sound a bit loose and flabby try another amp or source – it’s not the headphones.

Accessories

11010051It’s always nice to receive some extra goodies with a set of mid-to-high level headphones and the HP200s deliver with a nice black hard-case, extension cable and airline adapter. A really nice touch is the pouch that’s built into the case using a velcro system so you can store your adapters, etc. in the case without them rattling around and damaging your headphones.

Cable Options

I mentioned the extension cable provided with the HP200s, but it’s worth going a little deeper.

11010057The headphones come with a straight, 1.2m cable which is great for desktop use, but won’t reach to your television and may be a little limiting if you like to move around without always having your source at your hip. The extension cable takes care of that by adding a couple of extra metres to the cable. The main cable ends in a 3.5mm jack with a screw on adapter for 6mm connection while the extension cable ends in a plain 3.5mm plug without screw thread.

In addition to the extension option, the HP200s have a detachable cable which uses a simple 3.5mm stereo jack so it would be very easy to buy (or make) a replacement cable if required. If you did decide to go the custom cable route though, it’s worth noting the SoundMAGIC locking system which limits the size of the plug used (and means the plug won’t lock into the headphones so it could pull out if accidentally tugged on.

The stock cable is a little bit prone to hold the “waves” created by coiling so a slightly better cable would be nice for ergonomics, but it sounds fine.

Comfort

Having waxed lyrical about the great feel of these headphones in the hand, it’s probably a good time to consider if they feel as good on the head!

The simple answer is “yes”. The HP200s are very comfortable. The soft ear pads are very comfortable and the cups are big enough to fully cover the ears without putting pressure anywhere and without getting too big. The padding on the headband is sufficient to keep it comfy for long listening sessions, but I’d say overall the headband is not quite as comfortable as some of the best in the game (HD650 / Beyer T1, etc.) due to a slight sense of pressure in the centre of my scalp. It’s worth keeping 2 things in mind here: firstly that I have no hair to add padding between my scalp and the headphones, and secondly that I am being very nit-picky to find anything you might want to know.

Overall I’d rate the HP200s as a fraction behind the HD650s in terms of comfort, but it’s literally just a fraction.

Sound Quality

The HP200s garnered their comparison to the HD650s on account of their sound signature. Similar to the HD6X0 series from Sennheiser, the HP200’s sound smooth and a touch warm, but without losing any detail. They have more top-end sparkle and clarity than the HD650s and may be more akin to the HD600s, but I can’t compare directly to the HD600s because I don’t know the HD600s well enough.

Bass

11010060The HP200s produce excellent, controlled bass that has plenty of body and impact in the mid-bass region, but without bloat and boom. Once again they’re quite similar to the HD650s in their presentation. Bass is warm, full and smooth with kick and presence. It’s not the most detailed bass I’ve heard, but it’s very enjoyable and tends to flatter most music I’ve thrown at the HP200s.

I often use Marrakech by Incognito to test bass because it opens with a well-recorded kick drum that really tests a headphone’s ability to move the air cleanly and tightly, but with force. The HP200s performed beautifully here and sounded as natural as anything else I’ve tried. The presentation had both the sound and the feel of standing in a room with a kick drum being played.

The HP200s also have sneaky sub bass. I was about to write that they didn’t go as deep as I might like, but I changed tracks and found the hidden rumble. While not quite at the level of the Beyer T1s (which cost nearly 4x the price of the HP200s), the sub bass is present and authoritative. While not a bass-head can, the HP200s are very impressive in the bass department, but present the bass in a very natural and musical way.

Mids

Hopefully you’re not getting bored of my HD650 references yet because there are at least 2 more to go.

The midrange from the HP200 is clean, smooth and balanced with everything else. Nothing about the midrange sticks out, but I think that’s exactly how it should be because it means nothing is being overshadowed or over-emphasised.

Switching over to Tin Pan Alley by Stevie Ray Vaughan, the guitars and the drums had beautiful texture and clarity, but were buttery smooth the way they should be. What struck me though is a level of openness that I think was lacking from the Sennheiser HD650s. People often talk about the Sennheiser veil and although I never bought into it 100%, I can understand where the term came from. To my ears, the HP200s present the same quality of silky smooth midrange for vocals and instruments, but manage to add a tiny amount of edge and attack that the HD650s never gave me. That edge takes the sound from relaxing and enjoyable to exciting and enjoyable. It does this without bringing fatigue – just excitement.

I also like to test headphones with tracks from the Alison Krauss and Union Station album, Paper Airplane because some headphones can sound a little glassy with some of the strings used. The HP200s aren’t among that group though. The strings all remained clean and “plucky” (for want of a better term), but without getting edgy and fragile sounding. To sum it up I guess I’d say they maintained both warmth and detail which is perfect!

Treble

11010053

If you’re waiting for the big “but” here and expecting the HP200s to falter you might be disappointed, but the treble does require some discussion.

Final HD650 reference alert! In my opinion the HP200s deliver better treble than the HD650s. It is brighter, more detailed and with more extension. Where the HD650s may have an edge over the HP200s is that they never become sibilant. It’s not a regular issue, but it is possible for the HP200s to sound a bit edgy in the treble, particularly if a track has been poorly recorded or heavily compressed. While not brutal like the T1 or HD800 headphones, the price we pay for treble detail and extension is the risk of sibilance. I personally think the HP200 balances the divide really well. Overall it’s still a smooth sounding headphone, but without drifting into anything mushy or vague.

I think the sound engineers at SoundMAGIC created a beautiful balance between enjoyable listening and detailed listening by presenting just the right amount of treble, but without going to the extremes and revealing every flaw and weakness in the music or the source.

Staging & Imaging

When listening to the HP200s, the headstage (a new term I’ve picked up from someone somewhere and prefer to soundstage because it recognises the fact that it’s all inside the head) is spacious and clear. The sound is intimate and feels like you’re up close to the musicians, but it’s not claustrophobic, just intimate. I noticed that the size of the headstage was influenced by the source I used. A better-matched source (i.e. <2 ohm output impedance) resulted in a larger, more spacious sound and a headstage which is clean, open and very lifelike.

Spacing in the headstage is good and instruments are well placed in a good-sized semi-circular stage. While I’ve noticed a few triangular headstages lately (front and sides with no depth at the diagonals), I’d say the HP200s perform quite well at the diagonals and present a convincing auditory picture. There’s also good vertical layering with voices sounding slightly higher than the instruments being played by singers.

In terms of imaging, the HP200s define the placement and boundaries of instruments really well. Listening to orchestral music, each instrument is clearly separated and defined and there is a nice sense of depth and placement within the stage.

I would describe the HP200’s staging and imaging as immensely enjoyable and relaxing. Sure, surgical tools like the HD800s will perform better at pulling apart instrument placement, etc., but the HP200s do a great job for enjoyable listening and a wonderfully relaxing and yet engaging presentation.

Summary

The easiest way to sum up this review is to say that this pair of HP200s was kindly loaned to me by Billy at Noisy Motel for the purpose of reviewing them. I am dropping them off again tomorrow afternoon and will not only miss them, but have started budgeting to by a pair. I like them that much!

I really wish I still had my HD650s to compare side-by-side with the HP200s because I have a feeling that the HP200s are on par or better in every area (as long as they’re paired with the right source) and a clear winner in the treble region. As mentioned, I have a feeling the HP200s are actually a very close competitor to the HD600s and look forward to a direct comparison soon hopefully.

In the meantime, if you have around $300 to spend on an open headphone and you’re looking for a headphone that delivers a slightly warm, but mostly neutral sound with plenty of detail and clarity then honestly look no further than the HP200s. I’ve tried the HD650s, HD600s (briefly), DT880s, AD900s, AD900Xs, and various other headphones at this general price-point. The HP200s are the first ones I’ve decided to buy since owning my T1s and selling my HD650s. If I could have HD650s or HP200s at the same price, I’d still choose the HP200s and the same goes for all of the other headphones at the same general price-point with the possible exception of the HD600 which I need to listen to in more depth.

Don’t be put off by the relatively unknown brand-name and lack of European heritage, the HP200s are the real deal and an absolute must-listen before spending any money on an open headphone. I can’t stress enough though that these must be paired with the right source. With a poosly matched source (like my tube amps) the HP200 sounds better than average, but with the right amp / source, the HP200s are simply astounding – not just for their price – simply astounding, period.

AKG K420

For a while now I’ve been looking for a good office headphone – something that I could take with me easily, not disturb others, but be able to hear what’s going on around me when needed. Oh, and it had to sound good, be easy to drive from a laptop or portable player and not be too expensive. It was quite a list to fill.

Ladies and gentlemen…. introducing the AKG K420 – perhaps the greatest budget, portable, open headphone around.

Overview

K420 Box trans

  • Frequency response:  13Hz – 27kHz
  • Input impedance:  32 ohms
  • Sensitivity:  125dB (SPL/V)
  • Cable length: 1m

The K420 is an open or semi-open style, folding, portable on-ear headphone. They come with a simple carry pouch and not much else, but that’s really all you need and it keeps them highly portable and light.

The simplicity of accessories and design also keeps the K420s at a great price point. At around AUD $70, they are a fairly low-price headphone in the scheme of things, but don’t let their price point fool you – they punch well above their weight.

Similar Options

When I went to buy the K420s, I had a few options on my shortlist:

  • AKG K420
  • Koss Portapro
  • Sennheiser PX100-II
  • Jays V-Jays
  • AIAIAI Tracks

All of these options are priced similarly and all have some good attributes going for them, but for me the K420s covered everything I needed without dropping the ball in any category and sounding the best overall (in my opinion)

Versatility

The AKG K420s sound great driven directly from a wide range of devices including:

  • Laptop
  • USB DAC (Audioquest Dragonfly)
  • iPod (5.5G runnin ROCKbox)
  • Tralucent T1 portable headphone amp
  • Cowon X7
  • Sony Xperia TX (android smartphone)

As you can see from this list – the K420s are happy with pretty much any source. This is partly due to their moderate impedance and their high sensitivity, but also due to the fact that they aren’t super-revealing audiophile headphones – they’re good quality, everyday listening headphones.

Design & Comfort

The K420s are designed with portability in mind and the 1m cord is proof.  The lightweight folding design makes them easy to take anywhere, but not at the expense of a quality, robust feel. I never get the sense that a wrong move could damage or break the K420s. They aren’t built like a tank, but they will stand up to normal portable use and treatment.

k_420_denim_3d_view_on_white_The headband has a nice, rubbery insert where it makes contact with your head and I’ve found no discomfort during extended listening. Once again, they don’t quite compare to my AD900s or HD650s in terms of comfort, but for a lightweight portable, they are perfectly comfortable.

The earpads are covered in soft foam and are large enough to cover the ear making them comfortable and easy to place on your ear – no problems here.

Now for the one design flaw which is a minor one, but potentially worth noting. When you fold the earpieces in for storage / transport, the strain reliefs (extra rubber sheathing over the cable) where the cables exit each earpiece can easily be bent and put under pressure. That might be exactly why the strain reliefs are as long as they are (for extra protection of the cable), but I always feel like I have to be very careful when folding and worry that this could be a long-term weakness of the K420s. Unfortunately, only time will tell…

The last point in the design section is the cable length which will be a plus for some and a minus for others. At 1m it’s quite short and AKG don’t provide an extension with the K420 so there’s no flexibility here. I find the 1m cable length to be ideal for working at my laptop and sitting with my phone / iPod, but some may yearn for just a touch more length – it’s a very personal thing based on where and how you use your headphones.

Sound

Overall, the sound from the K420s is engaging and fun, but keeps everything under control so there’s no fatigue from a bright top end or bloat from enhanced bass. All-in-all, the signature is slightly V-shaped meaning that the bass and treble are probably ever-so-slightly forward compared to the mid-range, but the mids don’t get lost which is great because the quality of the mids is fantastic.

Bass: Strong and impactful, but never bloated. Compared to the PX100-II, the bass was less prominent and switching between the two made the K420s seem a little light on bass at first, but further listening on their own showed a nice full bass with good depth and body.

The bass won’t blow you away and may not suit some hip-hop and electronic fans the way something like the PX100-II might, but the K420’s bass is very versatile and has surprising extension and impact when thrown some hip-hop or electronic. It has a nice warmth, quite good texture and sounds good with everything I’ve thrown at it. It has significantly more presence and body than something like the HiFiMAN Re-272, but keeps it clean and controlled.

Mids: I love good mids and the K420s manage to satisfy. Every now and then a track will make me stop and really listen to the smooth and liquid delivery of the K420’s midrange. The super-sweet mids seem dependent on the track being played, but they are always solid. Overall, the mids are solid around 85% of the time and hit a sweet spot on around 15% of the tracks I’ve tried – mostly when there’s a little less high frequency activity in the track.

Highs: The K420 has peaky highs. Without looking at a chart of the frequency response it’s hard to pick exactly what’s going on, but they can seem bright in one moment and smooth in another. Overall, the highs are always fine, but they are a little bit variable and err towards the brighter side. Thankfully the K420s don’t get fatiguing or harsh – probably because of the nice warmth provided at the bottom end to balance out the top end.

Although not super-resolving and transparent, the K420s have nice high end detail and keep things clean and clear enough to sound good with every style of music I’ve tried.

Presentation: The K420s create an adequate soundstage, but nothing exceptional. Instruments are well placed in the soundstage, but the size of that stage is quite limited and tight to the head. There is little to no forward projection of the sound which means that everything is crammed within the space between your ears, but it doesn’t sound too cluttered – just not spacious and holographic like some much higher priced headphones. Once again, for the price, the K420’s performance is at least up to expectations. In terms of staging it doesn’t outdo its price tag, but it doesn’t detract from the enjoyment of these relatively budget headphones.

Summary

For a sub-$100 portable all-rounder I really don’t think you can beat the AKG K420. When viewed in perspective with their price, they are far ahead of most similarly priced options and will actually outperform some more expensive options too. Are they the last pair of headphones you’ll ever own? No. Are they a pair of headphones worth owning? Yes.

Audio Technica ATH-AD900 Review

Audio Technica ATH-AD900 open style headphones

Audio Technica ATH-AD900 open style headphones

The ATH-AD900s are a well-known headphone made in Japan. They’re recognised as a clean, accurate and possibly under-priced headphone. I very recently purchased a pair and they’ve really opened my eyes in a number of ways.

On first listen, the AD900s sounded a bit “thin” for my liking. I’m definitely not a bass-head, but I was worried I would miss the presence of a solid kick in the bass. As I’ve listened to the AD900s more and more I’ve actually found that I’m loving the clean and possibly slightly understated bass from these phones.

In my article about compressed audio I discussed the phenomenon of “masking”. Masking is what happens when a loud sound prevents us from hearing a quiet sound. I’d never thought about it in relation to speakers or headphones before, but I’m starting to think it plays a part in the detail of any reproduction device. I am hearing details in music with the AD900s that I’ve never heard through other high quality speakers and phones I’ve used. That’s not to say the AD900s are the best phones on the planet, but they are definitely very, very good. What makes them so good is their balance. Because the different frequencies are so nicely balanced, the bass doesn’t overshadow the mids and treble and vice versa. There’s no harshness in the top end to get in the way of the rest of the music and the vocals don’t jump out over and above the instrumentation. Everything is exactly where it belongs.

It’s probably important to note that the AD900s are an open style headphone which means that even though they cover your whole ear, they don’t cut out any sound from the world around you. It also means that people around you can hear what you’re listening to pretty clearly so they’re not a good choice for open offices or situations where others don’t want to hear your music.

Let’s look at the individual characteristics of the headphones:

Quick Specs

Speaker Driver : 53mm
Frequency Range : 5 – 35,000Hz
Power Handling : 700mW
Impedance : 35 ohms

Bass

Attack: The attack from the AD900s is beautiful, but understated. They’re a very sensitive earphone with a relatively high impedance which makes them very responsive (a bit like a powerful sports car with excellent breaks). They go fast when needed and stop just as quickly. The result to your ears is accuracy and energy. The AD900s sound exciting and lively at all frequencies and this means a good attack in the bass. During Wayman Tisdale’s “Take the Lord Along with You”, the bass is crisp and sharp with plenty of detail. There’s no muddiness or lag in the bass – it’s agile. However, there will be a lack of punch for some people and this means you don’t feel as much of the attack as you might like. The AD900s are probably more accurate than some of the more exciting earphones around, but that does mean they lack the up-front excitement created by the feeling of some good, hard-hitting bass.

Rating: 7.5 / 10

Mass: As you’ve probably already gathered, this could be the one weak point of the AD900s if you like bass, but this is where audio becomes such a personal affair. I love the fact that the AD900s are so realistic. If a track was recorded with lots of bass, the AD900s reproduce it, but they also shine a very bright light on tracks recorded without much bass. The result can be a slightly thin-sounding experience. Even though that’s more a reflection of the recording and engineering of the track, many headphones will lend a little extra bass to music and cover these shortcomings.

I tried listening to “Halftime” by Nas and there’s plenty of bass, but it’s not thumping on my eardrums like an angry neighbour. It’s very present, but not overpowering and I know some people enjoy the hard-hitting thump.

Rating: 5 / 10

Vocals / Mids

It’s almost difficult to review the mids and vocals from the AD900s because they’re exactly what they should be and perfectly balanced with everything else. They don’t stick out as a flat spot or a highlight. The mids and vocals are smooth, realistic and perfectly placed within the overall musical picture. There’s really nothing to report (in a good way) – they’re perfect.

Rating: 8.5 / 10

Detail

Wow. If only I could give them a 12 out of 10. Detail is the AD900’s party trick. Their accuracy and agility is simply awesome so you hear every tiny detail in all of your music. Even driven straight from an iPod (5th Generation), the accuracy is outstanding. The iPod has to run at nearly 100% volume, but there’s still a little headroom to turn it up if necessary and the quality is still excellent.

When listening to “Learn to Love” by Harry Connick, Jr. there are some minor riffs and fills from the backing orchestra and a Hammond organ. On other earphones I’ve used, these riffs tend to get lost in the mix, but on the AD900s you can hear even the subtlest textures and details within the backing instrumentation – it’s quite an experience.

One of the best things about the level of detail the AD900s provide is that the music is exciting and energetic. There are so many different sounds and textures going on that you can really explore the music’s twists and turns. Even tracks you used to find boring can surprise you with a new detail or texture you’ve never heard before. This is true in all music, but it’s particularly noticeable in classical music. Listening to “Sarasate: Zigeunerweisen, Op.20” and “Capriccio Italien Op. 45” is quite amazing as you hear every pluck and pop and squeak from every instrument in the orchestra. I’m not a classical fan as such, but I love hearing the odd orchestral track just to experience all the textures and details I can hear through the AD900s.

Rating: 8.9 / 10

Staging

Staging was what initially attracted me to the AD900s. Other reviews I’d read suggested that the AD900s offered a broad and detailed soundstage and they really do. If you close your eyes while listening to a well recorded piece of music, the sound seems to come from a space outside of the confines of your head and the headphones. All that space also means that it’s easy to separate where different sounds are coming from.

I use Capriccio Italien Op. 45 to test for staging and placement of sounds because there are lots of quiet moments with individual groups in the orchestra playing. The AD900s paint a perfect picture of the orchestra. You can hear exactly where the horn section is placed and you can hear that they’re further away from you than the strings. The french horns are slightly to the right while the oboes and clarinets are more centred, but still slightly to the left. The detail is beautifully clear. I have heard headphones with slightly better staging (like the Ultrasone Edition 8s), but the AD900s are still extremely good, especially for the price.

Rating: 8.5 / 10

Overall

For around $300 you’ll have a very hard time finding a better pair of headphones in terms of accuracy, staging and comfort. I regularly wear these headphones all day (literally) and actually miss them when I take them off because they are SO comfortable. I have a shaved head so there’s no hair to add padding for headphones and most become uncomfortable in time, but the AD900s are hands-down the most comfortable thing I’ve ever worn on my head (including hats and beanies)!

If you love bass from a variety of music, don’t jump at the AD900s until you’ve had a good listen to a range of tracks to see if the “realistic” bass is enough for you. If accuracy, detail and clarity is your thing, do yourself a favour and check these out. If you’re not sure what you like you should definitely give the AD900s a try, but make sure you listen to them for a little while on a range of tracks before making your mind up. Most of us aren’t used to the kind of unbiased sound they give and you may feel a little underwhelmed at first, but give them some time, close your eyes and explore the music a bit – you might be surprised.

All-in-all I just love these headphones and often find myself turning to these instead of high quality speaker setups. I love the accuracy, detail and intimacy of the sound. If you’re buying headphones and have around $300 to spend you should definitely check these out. Even if you’re spending significantly more than $300, take a listen to the ATH-AD900s because they will embarrass many more expensive models.

Overall Rating: 7 / 10

Additional Note: The model below the AD900s is the ATH-AD700 and although Audio Technica completely missed the mark on the colour scheme (purple and gold), they’re an excellent headphone. There is absolutely no doubt that the AD900s are significantly better and are worth the extra $$$. The build quality and sound quality are both upgraded on the AD900s, but check out the AD700s if the AD900s are more than you want to spend.