Klipsch IMAGE S4 In-Ear Enhanced Bass Noise-Isolating Headphones


100+ Head-Fier
Pros: Cheap, portable, durable, comfy
Cons: Muddy, treble rolloff, nonexistant sub-bass
If you've never heard anything other than the cheap crappy headphones that come with your ipod, these will still sound amazing. Real bass! Actual detail in treble! I can't recommend them however. I'm not sure there's anything in this price range yet for IEMs that's acceptable. Headphones are getting cheaper and better over time so it could be something better has come along.
My S4's are trusty little things that still work to this day, unlike my X-10's which broke several months after I got them. They also have a better cable. The rubberized sheath doesn't tangle or break easily and travels very nicely.
These are also very comfortable. I loved the earpieces so much, I used them on my Etymotic hf5's. They're smooth and agreeable to listen to for long periods of time.
Now let's do the rundown:
-Sub-bass - not very much, if any
-Upper bass - muddy, boosted, bloated. All the negative adjectives I can think of. But it is there, at least.
-Mids - drowning in the upper bass muddiness
-Treble - subdued, rolling off rapidly above 8000-ish but there's some detail. Key word... some.


Reviewer for The Headphone List
ryanjsoo's Reviews
Pros: Great comfort and isolation, Sound is a step above consumer competition, Very accessible
Cons: Bass can be too much depending on preference, Upper mids too thick, Treble is harsh, Cable is thin and the straight jack is not durable

Introduction – 


I`ve always been a bit of a Klipsch fan. In fact the s4`s on account of Cnet`s glowering reviews, became my first proper earphone. I remember listening to my father`s set for the first time, it was that mind blowing moment for me where I realized just how much difference audio gear actually makes and such a huge step up from the stock earbuds that I`d been using at the time. Whilst I didn`t possess the audio vocabulary to describe the sound or the experience to judge it`s characteristics, I still found myself enjoying my music so much more. These earphones drove me to buy the higher model x10`s which I still own and enjoy and then a set of Phonak PFE232`s all that way to the brilliant Sennheiser ie800`s that I`ve been using for the past three years.



Accessories – 

The packaging is typical of early 2000`s Klipsch models; A small, thin cardboard box with a clear window displaying the earphones. It`s similar to the x10`s, but less luxurious. One side is perforated for easy un-packaging but it also lets you know if the earphones have been tampered with as it`s not possible to reseal.


The earphones are coiled on a plastic tray that also contains a fabric pouch pouch for the remote “i” models or a much more robust metal tin for standard models. Some models also have a zipper style fabric case but all function well except the pouch which doesn`t provide an awful lot of protection. The earphones also come with a shirt clip and 3 pairs of Klipsch`s excellent oval tips (two medium pre-installed). For their $170 AUD RRP, this is not nearly adequate, but at their current $40-50 price the amount and quality of the accessories is fine.



Design – 


Utilizing the typical cable down earphone fitment, the s4`s are very easy to use and quite comfortable. The housing is well styled with a premium silver and gloss black finish. They are slightly angled making differentiating between sides easy but they also have markings on the earpieces.


The nozzles are quite long, but the tips have especially short stems so fitment depth is limited. As a result of the relatively shallow-medium depth fitment, I use the largest tip size even though I use medium on pretty much any other earphone. For people with especially large ears this may be a problem.


I did notice that the housings stick out quite a bit from the ear making wind noise quite prevalent, you also won`t be able to wear them whilst sleeping. The earphones are, however, light weight and their long soundtubes mean that the sharply styled housings rarely contact the ear for optimal ergonomics. If they do contact the ear, the edges on the housings can cause discomfort which is why a larger than usual tips size is recommended. Speaking of which, the Klipsch oval tips produce a strong seal and passive isolation is very good for a regular earphone, in between a normal consumer earphone such as the cx300`s and a fully sealed over ear iem such as Shures or Westones. I believe that there are some small vents on the housings as foam tips do not produce much stronger isolation, but I can not see any clear features.


Despite the strong seal the earphones are not completely stable in the ear for prolonged listening and will need adjustment after some time. This is because Klipsch have employed a similar tactic as the x10`s to reduce microphonics; Klipsch utilize the shallow fitment to pull the cable further from the face and reduce cable contact, they don`t have as strong a seal and the fitment isn`t nearly as deep as that on the x10`s however, leading to instability after some time. Still, the strong seal means that they will stay put fine when sitting and even walking, but running is off the table.

The cable is similar to the x10`s in that it is very soft and supple with a great texture that resists snagging and that cheap tacky feel. It is similarly thin yet the housings on the s4`s are noticeably bigger which can produce stress when untangling. They are not fabric reinforced and the cables are quite prone to tangling, but they are especially easy to untangle when this happens. They are decently relieved at the earpiece and remote, but the jack is inadequate and a common point of failure.


Hopefully Klipsch will switch to a right angle jack in the their future lower end models as even the S4 II model uses a straight jack. The “i” model has a remote at the y-split as opposed to a molded case that is functional and very easy to use.

The buttons are well spaced and although they are all shaped exactly the same, they are easy to identify. There is a small mic opening on the back, it works well, but it is a little low (position can be blocked easily) for super clear audio. The remote is optimized for IOS though the multi-function button works on android devices. The earphones are decently microphonic but not distractingly so, they are actually quite good for a cable down earphone. The included chin slider helps with this if you don`t have a shirt clip on hand.



Sound – 

The s4`s have a clearly v-shaped signature that is quite raw, trading smoothness for detail. They have great end to end extension for a consumer earphone, and the sound is above average overall. The sound quality is at the level where you won`t feel like you`re missing out on parts of the audio spectrum, it doesn`t have effortless detail or immense clarity, nor is it even remotely refined, but the earphones do retrieve plenty of information. They have an emphasis on mid-bass and sub-bass is also moderately boosted, they are in essence, a less refined x10. Overall the midrange sounds quite scooped, the lower-mids have good body but they get a bit peaky and female vocals can sound too thick for my liking. Treble is decently extended and detailed but it is also thin, very grainy and can be fatiguing. There is not too much soundstage and what is there is mainly focused upon width whilst depth is below average. Despite this, imaging is surprisingly good. The sound is warm and still more balanced than regular consumer earphones. They have an extra layer of detail and intricacy that puts them above low end Sennheisers and far above Skull Candy and Sol Republic models.

A big plus for the s4 is that they are very easy to drive and will reach very high levels from any decent smartphone. They aren`t sensitive to output impedance and don`t require amping at all. They sound fine from even my iPod Nano 7g and 3rd gen Shuffle. They don`t pick up hiss too easily, but there is always an underlying hiss on every source I have, even my dead silent Fiio Q1.


Bass – 

The bass has above average extension, sub-bass rolls off and isn`t too boosted, but bass comes on strongly after that producing great rumble and slam. Mid-bass is boosted to near bass-head levels with great body. It isn`t super fast nor punchy, and doesn`t resolve high amounts of detail, though it is decently textured. The bass is flabby and full, but not overdone for what it is, the midrange is still decently clear on account of a dip in the upper-bass which is only moderately elevated. The bass is much more neutral than the Sol Republic Jax and also of greater quality. Compared to the Xiaomi Piston 3`s, the s4 has similar sub-bass and much stronger mid-bass combined with slightly better extension. The Piston`s are a bit tighter and more balanced but still quite bassy. The s4`s would benefit from less mid-bass, but the quality is more than sufficient for most pop and hip-hop tracks. You do get the blurring of fast/complex bass-lines, and the Piston`s fare much better here, but the extra rumble and slam offered by the s4`s can be attractive.

Mids – 

The mids are tastefully warm and sound great for a consumer earphone. Over sculpting in the lower-mids produces a veiled upper-midrange, limiting clarity.In comparison to the more balanced Pistons, the s4`s sound thicker and more recessed. The s4`s have especially good detail retrieval in their price class and have a more raw sounding midrange than the overly veiled and cloudy mids of other consumer buds like the SR Jax. They retrieve more details than even the Piston 3`s but the thickness of the sound might disturb some. The added warmth sounds great with pop but the upper midrange limits versatility. For example rock music can sound overbearing whilst jazz is lacking refinement with too much sibilance. The midrange is recessed but both male and female vocals remain perfectly distinguishable and the s4`s powerful sound is great for films. Overall, the mids are coherent but often get overwhelmed by the bass and even treble at times, male vocals sound good but female vocals are missing crispness and sound truncated. The higher model x10`s are much smoother and refined in the midrange and female vocals are much better whilst retaining the warmth and richness of the s4`s.

Highs – 

The treble on the s4`s is quite extended and excited. It`s not airy, the Carbo Tenores are much better in the treble, but the s4 carries similar amounts of detail, it is just lacking smoothness. The treble is generally grainy and boosted in quantity. It is unrefined like the upper mids and a bit thin for me. Texturing is off and the treble produces sibilance in many tracks. They can be harsh at times but are a big step up from most consumer buds which have either no treble response at all, or one that is very rolled off, at least the s4`s portray this spectrum with some faithfulness.


Verdict – 


In the consumer space I would say that it`s remarkable what you get for $50 USD with the s4`s. But on the internet you get an awful lot for that money or in the Piston`s case, a third of that. When the s4`s were released in 2009 they were a great choice, but in 2016 they are certainly no longer the best one you can make. The aforementioned Xiaomi Piston 3`s for example produce almost the same level of performance at an astounding $15-20 USD whilst the Zero Audio Carbo Tenore`s are quite a bit better at around the same $30-40 USD price. What the Klipsch provide in return for that extra money is better packaging, isolation and ergonomics although the build is not particularly standout, even in this price range. If you are particularly adverse to shopping online and prefer the safety of a local retailer, then you could do a lot worse than the Klipsch s4`s, they are a great place to start and fakes are very abundant online.


Accessories – 6/10 for fabric pouch, 8/10 with the tin, The s4`s come with great silicone tips but Klipsch would be wise to include dual flanges for more stability. The fabric pouch provides minimal protection whilst the tin is very good, I`m not sure why there is so much variation.

Design – 7/10, The s4`s are attractive and premium looking, but quite poorly built. The cable is far too thin and lack adequate reinforcement. The straight jack is not well relieved and the housings are sharp. They are still very comfortable, but the right tip size is essential. The fit is plenty stable during normal use and microphonics are good for a cable down earphone. Isolation is also good and the s4`s work well when travelling.

Bass – 6/10, Powerful and full, the bass is of above average quality but is too much quantity wise. Warms and can overwhelm the mids. Great impact and slam are well suited to some music and some listeners. They are more balanced than consumer earphones.

Mids – 5.25/10, Quite detailed but lacking refinement. Full but upper mids are veiled and truncated. Deficient in smoothness and clarity but a step up from most earphones at this price. The Xiaomi Piston 3`s provide a more balanced listen for quite a bit less.

Treble – 5.25/10, Decently extended but too thin and harsh.

Soundstage, Imaging and Separation – 5/10, Not too much soundstage. Decent width but limited depth. Imaging is quite good and seperation is above average. They sound congested at times but soundstage is also a notch above the competition.

Overall – 7/10, You`re probably thinking that this end score is quite high for an earphone with no standout scores. The simple charm of the s4`s is that the isolation and fit, even purely due to the Klipsch oval gel tips, is so much better than all other cheap iems that it becomes hard to use other brands. Combine that with a sound that is a step above the consumer competition, and close to the more audiophile conscious brands out there, and the s4 is a solid choice for beginners. I would personally recommend spending $40 more for the more comfortable, better built and much better sounding x10`s, but the shallow sealing, V-shaped s4`s are probably more orthodox for the average  listener. The s4`s are special because they are so accessible, mixing a very typical consumer sound with just a touch of refinement that makes one wonder what more is to come. They are a great gateway into the hobby and not a bad earphone to keep around for media.


Really depends what you`re looking for, there are now much better options out there (sound wise), especially from China, Dunu and Vsonic are doing really great things. I liked them 7 years ago when compared to my apple earbuds sure, but I wouldn`t be satisfied with their audio quality now that I`ve tried other models. The fit and comfort is very good though.
Got them 6 years ago. Comfort was really good but that ear-deafening treble just ruined my experience since i couldn't use them for more than 20 minutes. 
One of the best, least BSing review I have read. Absolutely describes these perfectly. I bought them in 2009 for $50 and used the heck out of them for years, eventually upgrading to Vsonics and then high end Sony. The incredible thing is, despite a cracked control pad and total abuse they still work perfectly for gym use, and I will use them this way until they expire. They are showing no signs of doing so. As so perfectly stated above they are a great gateway, or at least were - better options exist today - and got so many of us into quality head audio.


100+ Head-Fier
Pros: Bass, high quality, carry case, (comfort, isolation)
Cons: Mids, highs, comfort, isolation
Brought these way back in 2011 for what seems like a total rip off today of $80 or so. 
Good: Bass, I think the bass is too dominant with these, it makes the mids sound bad and the highs are just absolute crap. Build quality is good, my right one's cable was not very securely attached to the stress relief but still held up no problem over the years. Stock tips didn't work the best for me, my ears and IEM's hate each other. I brought triple flange tips and the isolation is improved, as well as comfort and no changes to sound quality. 
Bad: Stock tips not for me. Mids sometimes taken hostage by the bass. Highs were shot long before, they didn't stand a chance!


New Head-Fier
Pros: Sounds half decent, bass not too woolly and treble not too harsh
Cons: Cable will fail you, even if you treat it like it an angel. Cost doesn't reflect quality.
I've had a very bad experience with these headphones and as such will personally not be buying Klipsch again. I'm now on my third pair of the the S4A (II)'s - the version specifically for Android smartphones. All three developed the same issue, losing sound in one channel. There appears to be a significant design flaw in the cable as in all three cases I was wither walking along with the phone in pocket or doing another everyday activity like mowing the lawn and the channel just cut out to such a degree I was never able to determine the location of the break by manipulating the cable, plug or joints. 
The local Klipsch local distributor replaced the first and second pair (begrudgingly), but now says Klipsch have told him that they won't replace any more devices purchased outside of New Zealand - (these were a gift from my father in law from Amazon UK). That's understandable I guess though, so I will try going back directly to Amazon and claim they aren't fit for purpose, but they are outside the 1 year warranty now of course. I have to say that I am really disappointed that the product appears to have not been tested to cope with normal use - it's not as if I was jogging or doing cartwheels or yanking the plug out of my phone sideways etc - just walking or mowing! It is especially annoying, as after the first replacement I have been ridiculously careful with the cables knowing how fragile they are, yet they still failed after only 3-6 months each!
I am happy enough with the sound quality, it's certainly a significant jump up from bundled headphones, but they weren't mind-blowing in any particular regard. OK bass and mids, treble a bit muted but I prefer that to shrillness. Isolation was very good, with the oval tips fitting my ears well, and they're comfortable over moderate periods. One unwelcome thing I noticed however was that when making calls, there is no feedback from the mic to your ears, meaning with the isolation you can't tell how loud the environment around you is, nor hear your own voice well and therefore can talk too loud - it's a bit disconcerting at first. Things are actually better if you pull the tips out to reduce the isolation. FYI the mic appears to work OK in quiet environments, not very well in noisy places, and is located not hanging in mid-air underneath your right ear like Apple, but rubbing on your centre of your shirt, Also, the lazy blanking of the Apple remote buttons to leave one available for Android means the controls are unnecessarily oversized and heavy. 
OK, enough ranting. Get these only if you see them cheap, say US$30, otherwise buyer very beware!
BF3 Player
BF3 Player
The build quality is a bit of a mix bag. My friend and I both purchased one on the same day, his earphone failed after 3 months, mine is still going strong after 2 years and I treat them pretty rough. The connector to the earphone housing has started to split but the thing still works 100%


1000+ Head-Fier
Pros: exciting sound, comfortable and light weight, excellent design and quality, shiny!
Cons: straight plug? for some people
To clarify: I have the normal s4, not the inline mic/remote edition (these http://www.bestbuy.com/site/image-s4-stereo-earphone/9422369.p?id=1218105502820&skuId=9422369&st=klipsch s4&cp=1&lp=3) I picked these up the other day just for the heck of it and because of their legendary status as excellent budget iems. I really wasn't expecting jaw dropping sound, especially since I was currently pricing some iems several price brackets above these. I am however very pleased with my purchase. Here's my short review :)
Reasons the s4 have made such a positive impression on me: comfort, quality and excellent design. The driver housings fit neatly in my ear and get a nice deep seal (I've had issues with getting a comfortable seal on other iems). The s4 are light weight and compact; I was even able to sleep with them in! (not that it was particularly comfy, but I forgot my earplugs and I've never been able to do that with other iems :3). The nozzles are angled and tips are oval shaped for a more ergonomic fit, and work especially well over ear. I really like the flat cable; it is an adequate length, has a nice texture, and low microphonics. While I wish klipsch had used an angled jack, the straight plug is well made and compact enough to use with my picky iphone case. They come with a nice little zipper pouch and easily coil up to fit in it. Overall very compact, portable and convenient.
For it's price category, the s4 definitley sound good. They have a v shaped sound signature that emphasises punchy bass and treble. It's worth noting this signature does not bring out the best in all genres and might not be suited to midrange heavy music. The sound stage is pretty good to boot! Overall an exciting sound, although not super detailed. I think the MSRP is a little high for the s4, but that's true for most headphones. At street price I think they are a stealer deal. They might not be the best sounding iems in the category, but the overall package is definetly impressive.
Even though I purchased the s4 on a whim, already they've become my go to portable headphone. I might even start using them for sports and exercising instead of my yurbud focus. In summary, I believe the klipsch s4 live up to their reputation as one of the best budget iems.


1000+ Head-Fier
Pros: Good overall sound quality, nice aesthetic design, one of the better "consumer" headphones you can buy at retail
Cons: Poor fit and durability, harsh sibilance
These were the first IEMs I bought that were over 50$ after reading good reviews on it. Unfortunately I don't think they live up to the hype. They are definitely better than some of the other consumer-oriented brands such as Beats, Bose, etc. but they are not worth 70 or 80$.
Note: I do not have my fully functioning S4 anymore because I recently lost it. (long story) The one I mention in this review comes in the blue CNET box (no cleaning tool, straight plug).
Sound quality
The sound quality is a V-shape signature with an emphasis on the highs. The bass is rather boomy but it does not overpower everything else and quite detailed still. The mids are a bit recessed when you first get these but they sound better after burn-in and using the bi-flanges clears them up while reducing sibilance. At first I found the highs to be rather metallic though this settled after burn-in, but the sibilance is still there. Overall, the highs are crisp but not very detailed. The soundstage is pretty good in size for an IEM. As these only go up to 19 kHz, they are a bit forgiving of lower bitrates. For my ears it is a bit harder to tell 128kbps from 320kbps compared to some other headphones. They also seem to amplify any sort of hiss.
Fit and comfort
This is probably one of the more disappointing aspects of the S4. Although I found the regular and large tips to be quite comfortable, the medium ones fall from my ears easily and moving them slightly off will kill the bass. Both cause the harsh sibilance I noted earlier. The "small" biflanges, on the other hand, take away this sibilance but take a while getting used to.They do take off a bit of detail from the highs unless you absolutely stuff them into your ears and keep it in that position (which I do not recommend because it has got stuck in my ear once). At the same time, they also bring out the mids and bass quite a bit more. Because the biflanges are small size, the noise isolation isn't as good as the large tips, although they still do isolate sound nicely. Like the medium eartips, they are hard to fit for optimum sound. Just moving them slightly off kills the bass.
Another problem is durability. The strain reliefs are especially weak and mine ripped within 3 weeks of use. That said, this isn't much of a problem as the cords still hold very well from the cans, and Klipsch has improved upon it in their latest version in addition to flatter cables. The cables in my version feel flimsy and do tangle when scrunched into your pocket, though they are springy so it's a bit easier to untie them. The straight plug on the other hand is poorly built. Putting these in my bag it somehow got bent to the extent that the center channel was removed like a karaoke. Fortunately, Klipsch sent me a free replacement (though I just recently lost this pair). It seems rather normal the plug is very slightly bent and not perfectly straight out of the box.
If they were under 40$ (which you may find on the internet) this would be a decent pair of cans. Unfortunately, durability and fit are the two main problems the S4 faces. That said, it's still one of the better consumer-level headphones you can easily buy at retail stores like Best Buy or RadioShack, stores that don't always sell the best type of headphones. if you are still interested, get the S4 II because of its better build quality (and watch out for the prices as it is often more expensive if they sell the original S4).
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I have had these headphones for some time, and I don't feel that they are hard to fit in my ears. I use the standard tips and they work just fine. I was concerned about this before buying them because of some reviews, but it was no problem. I would say that they work the best if you sit still, since if the cable bumps into your jacket, or something, a bump sound resonates into your ears and that's quite annoying. For running they are useless!
I have used them on long flights (ex. Amsterdam-Singapore) and after many hours, my ears got a bit sore, so I would rather recommend them for shorter commutes.
The noise isolation I find quite good, and the sound quality is in my opinion is also really good for these small headphones.
 the tips fit fine but if they move slightly off in my ears (if I yawn or something and my ears twitch) the bass goes away, and amount of sibilance with the standard-style tips is a problem. With biflanges the sibilance is almost gone and it brings out the warmth of the mids, but they don't isolate as well and your ears REALLY get sore from them.


New Head-Fier
Pros: ...
Cons: Everything for a headphone that's not free
I bought the klipsch s4i along with the iPhone4 on iPhone4's launching day cause I thought my new phone deserves a good earbuds.  Boy was I wrong. klipsch s4i is nothing more than a piece of crap! Please excuse my language or if I offended any klipsch fans, but im just trying to speak of my mind. The sound will break when the note is too high and there is absolutely no bass. I really thought the old model earbuds made by Apple that came with the iPhone4 is better than the klipsch s4i.
There are a lot of fakes out there. I think you may have got one of them, unless you're just getting a bad seal. The S4s have too much bass IMO.
White Lotus
White Lotus
Yeah, you got a fake pair.
either fake or defect


100+ Head-Fier
Pros: great bass, just right highs and treble
Cons: casing loosens after a while
You will always remember your first, and these earphones are probably the best first's i could ever get at that time. For someone who had never used anything besides apple earphones and equivalent quality earphones, so the s4's where a huge jump in terms of audio quality. It was great for most types of music that i listen to, anything from fall out boy to Andre Bocelli, so I'd say its a great starter for anyone looking for a cheap and good pair of entry level earphones. It has a really nice and mellow tones, especially in the mids where Andre Bocelli's ringing voice completely envelops you.
the build is great mostly, really nice design and the cable is thin but not fragile. only thing is that after a while the casing gets a bit loose,but not really enough that you would notice unless you really go and wobble the casing. Overall a great buy for anyone looking for something nice and simple that won't burn a hole in your pocket.
you know if you purchase it for 99 bucks, you could have caught the amazon deal on the x10 which is a higher model and it went for the same price.


New Head-Fier
Pros: cheaper than Ethiopian dirt, good construction, glorious bass, perfect fit.
Cons: no in-line volume controls, or remote/mic.
This was the first pair of headphones that I truly fell in love with. I remember it like it was yesterday, I asked my roommate of I could borrow his headphones while I studied for my upcoming computer science midterm.  He handed me a tangled mess of black rubber wire, and said "here, they suck but they're the only ones I have".  Laughing, I put them in my ears, and was surprised at the immediate ease of insertion.  Hmm, I put on some Deadmau5, Sofie Needs a Ladder, and then it happened... WHAARRRGLARBLE Is this what music sounds like!?  How have I gone my whole life listening to this skullcandy crap!?  I could hear ever note, the vocals were like someone was standing right next to me! I experienced the "3D" effect for the first time, and the Bass rumbled deep within my eardrums. 
Weeks later my love for headphones grew.  Over the years I purchased pair after pair, looking for an improvement, but I have found none.  Note ever headphones in the $100-$200 price range can complete with the Klipsch Image S4's.  If you have never heard these, you need to go on ebay right now, and get yourself a used pair in the $20 dollar range. God speed my friend.
Luv My BASS 1
Luv My BASS 1
Glad you like them!
I can't believe you would put something into your ears that already had someone else's earwax on them ...
Synaptic Flow
Synaptic Flow
with "ease of insertion."


500+ Head-Fier
Pros: Decent SQ
Cons: booming bass
Audio quality-pretty good. Bass can be overbearing.
Design-it is comfortable. Sticks out at an odd angle if you don't swap ears, and then the stereo is reversed.
Comfort-As above. Don't notice it in my ear with the Comply TX-100s I added. With silicone it can be annoying.
Isolation-Pretty good with silicone. Awesome with Comply.


New Head-Fier
Pros: Good design, good deep bass, isolation is very well and can be worn for a couple of hours without any discomfort
Cons: Few accessories, tips have unhelpful core diameter, the cable collects noise and looks fragile
I bough them to a friend as a birthday gift the last year. He tells me that are excellent headphones, perhaps to not make me look bad or maybe he was right, so I decided to buy my own pair. just as a note I bought my friend's S4 twice of the price than mine in a music store in Mexico, so the price varies too much in these latitudes.
It not brings you any extra for your money, only three sets of tips that aren't so useful. A hard case that becomes deformed soon and can't be closed after some weeks of usage.
I have not much experience in headphones and equipment when try them, but I had a Bose IE2 as earphones of choice and this set replaces it in daily usage with few problems (With proper care because they looks more fragile).
One problem that I have with them are that its tips' receptacles are very thin, they are difficult to clean and is not easy to find compatible tips, you can use the Comply T100 but these have very few compatible models, so if you buy the 3 tips pack you probably will only use one of them because is probably that you can't use the others on any headset you have.


New Head-Fier
Pros: reasonable bass
Cons: poor build quality leads to short life span, weak midrange
Hmmm... I did a bit or research before buying these. There were plenty of glowing reports out there and the cynic in me thinks that most writers on major sites write nice reports in order to not bite the hand that feeds them.
The build quality seemed average at best,
the cables transmit a lot of noise, it like someone running alive mic over clothing
The mid range and treble sounds like its coming down a phone line
After 6 short months of 1-2 hours use per day the left speaker died
Klipsch lovingly referred me back to the seller for a warranty claim, awesome - NOT
Once a figured out how to seal them in, for meant inserting with wire up, not down, they
seeled out a lot of ambient noise. The base was quite adequate if not that detailed.
Bottom line:
I was really disappointed with these, I've read some people figure that 6 months is good for
this kind of money on headphones! Stuff that!
I wouldn't recommend these to anyone.


New Head-Fier
Pros: The block out a lot of ambient noise.
Cons: They don't hold up to normal wear and tear.
I received these headphones for a Christmas present after doing A LOT of research.  I enjoyed them at first, but after less than 3 months the cord at the jack began to loosen, even though I religiously put them back into their case after every use.  By the time I had owned them for 6 months, they were no longer working.  
This part of the headphone is not covered by warranty, so I no longer have the headphones, or the money.  
Exactly the same thing happened after 4 months.
Wow, one star? Pretty harsh, 6 months is pretty acceptable for $65 iems,
I think we're all measuring by our Head-Fi'er standards here. Sure, to IEM fans who regularly put down hundreds or even thousands on in-ear gear, getting that kind of time out of a set that's less than $100 seems pretty good. To an average consumer making his (or her) first major purchase in audio, it's not to be taken that lightly.
I've had really cheap Sennheiser bottom-end in-ears and (dare I say it) stock earbuds that've lasted longer than that. Klipsch's in-ears are known for horrible durability, and they didn't fix any of that with the S5i "rugged" version of the S4 design.


1000+ Head-Fier
Pros: Very comfortable, easy-to-use, consumer sound
Cons: Tends towards sibilance, better options for the price
I bought these alongside the UE500, with the intent of keeping the one I liked and returning the other one. Auditioning through a stereo, the S4s were a little less lively and smooth than the UEs, and tended towards some fairly bad sibilance, especially on classical tracks with high violin parts that were almost painful to listen to. I liked the UEs better, and returned these.
Despite the sound quality issues, I have to say they were very comfortable and hassle-free, and the build seemed better than the UEs (which have had cable issues since).
Keep in mind that this was a while back, before I had a lot of audio experience (still don't), and that neither pair was burned in.
Among dynamic iems the S4 are known to have a bit of a burn in period; the highs lose that edge and become just "borderline" sibilant. But if you don't like that v-shaped consumer sound then you aren't going to like them any more after burn-in.
Nice, honest review.
Yeah, I realize that now, though I didn't know that when I had them (over a year ago). And this is more of an impression than a rewiew tbh.


New Head-Fier
Pros: Balanced sound, quite enough bass, excelent isolation
Cons: Strange fit, fragile, thin cable, highs are a little distorted
These will provide very good isolation if you get the correct fit. I managed to do this by trying out all the tips affered. As others have noted, the is a little bit of distortion on the highs, which I've noticed slightly affects the vocals. The bass on these is really good, altough it fortunately doesn't drown the rest of the sound, which makes them a little balanced to my ears. Overall good value.


Pros: Bass, comfort, isolation
Cons: poor construction quality, bass-heavy
I got these after I put my UE Super Fi-4s in the wash and I couldn't handle my cx-300iis not fitting quite right anymore. 
The newer version has a straight plug, and a decently thick cable, which hasn't tangled, but it is quite bent fro being wrapped up. However, where the cable goes into the housing of the earphone, there is a slightly thicker part that wraps around, which has cracked after 6 months, and it sort of scares me.
They're very comfortable, with oval shaped tips instead of round ones that come with most iems. They also seem a bit large and heavy to me, and sometimes they fall out if my ears are especially sweaty or it's a long listening session, so I wrap them over the top.
The sound is more bass-heavy, although the bass doesn't extend very far, or have a nice tight punch. It's a bit loose, but it's pretty decent for most listening. Mids seem a little recessed, but not too bad. Highs are a bit less recessed with the mids, and although some say they are fatiguing, I listen to them for several hours straight almost every day without a problem. The sound seems to be a more standard consumer oriented sound rather than a hi-fi audiophile oriented sound.
Overall, decent headphone, fun sound signature and quite comfortable.


100+ Head-Fier
Pros: Great audio quality, They fit very well, Good warm bass
Cons: The cord is very thin (others feel it might rip, I don't think so), Not really noise isolating
I got these headphones from a friend that got these bundled with the iPod Touch 4G he got for his birthday. He told me that he did not like in ear headphones and was going to use them with his Skullcandy's. I got really excited since the headphones are from Klipsch so obviously I couldn't turn down the deal.
When I got them, I literally threw out my cheap Skullcandy's and forgot about my comfortable Apple Buds, these headphones are great!
What I like: The audio quality, while not the clearest is great. I really like the highs and the bass when I put these on and I prefer these over some of my other headphones because they sound very good with house music and techno. Also, they are extremely comfortable and never pop out, although can get a little lose in my ears sometimes.
What I don't like: While they do block out some noise, pretty much all in-rear headphones do. I do not think they should be sold with noise canceling as a feature. Also, the cord is too thin and people have damaged these headphones by accidentally pulling on the cord too hard. I feel like my headphones still have a long life ahead of them.
Looking for great sounding headphones at an affordable price, get these!


Pros: Bass presence, iPhone compatible mic available.
Cons: Price, overall sound quality, comfort.
At the MSRP of $99 or at the discounted price of $79 there are many better options out there.  I bought these before I did any research, on an impulse at the Apple store.
The bass is appropriately enhanced without being overwhelming.  Decent extension but not very quick or precise.  The mids & treble are lacking refinement, while they are clearer than many earphones, they do not produce enough quality to justify the price of the set.  The treble is very harsh & sibilant, I couldn't listen to these for very long without feeling fatigued.  They aren't specifically comfortable but not especially uncomfortable, like many of it's peers they don't sit flush so they are impossible to sleep in comfortably.  There is no real separation & doesn't appear to be any tuning for soundstage, the sound is where the speakers are, plain & simple.
The mids & treble make this set very overpriced compared to the competition in the $50-100 range.  The sound signature is extremely poor, they aren't sweet or bright in any good sense of the words, harsh & sharp are much better adjectives.  I would avoid these headphones for any price above $50 & might even argue that $50 would be better used saving for a better IEM.
Whilst it's been a long while since I've put these on so I can't comment on SQ. The design and comfort of this pair are harshly judged IMO.
They are well designed, very compact and unobstrusive in shape. The oval tips are without a doubt an improvement on circular silicone tips. As ear canals aren't circular in shape, any circular tip is stretching your canals unequally, whereas I found the S4s to be much more wearable for longer periods. In both of these factors, they are above 3/5 (average) if you ask me.
We'll have to agree to disagree. They are no more comfortable or better designed than any other canalphones that I've seen, they aren't smaller, lighter or more compact than it's direct competitors; & they are not more comfortable either. 3/5 is 'average' & that's just what the design & fit was to me, average.


New Head-Fier
Pros: sound surrounds you, enough bass to make you want to sway
Cons: oval ear pieces
Used them for a year or so.  Very happy. bass is tight, not booming, highs are pleasant.
They are a bit slippery to fiddle with for me.
The material the ear pieces are make my ears itch after about 30-40 minutes.  I had to have Klipsch send me the other size that is not included as none of the included ones were fitting properly. Even then, out of all of them, they don't fit as I would like them to.  The pointed ear pieces are all way too small, the oval ones I ended up NOT aligning as suggested to get them to fit the best for me.
The cable is thin and  tangles easily, as I'm sure others do.  I have been fairly gentle with them so I cannot attest durability.  Though, I do run 20 miles/week with them and no moisture or sweat issues.
I would only get different ones if I could find the perfect fitting ones, otherwise I am quite happy.


New Head-Fier
Pros: Sound good, Comfortable, iPhone-compatible
Cons: large button, ear mold plastic could be firmer
I got a pair of these to use with my iPhone for listening to music as well as making calls. So far I'm pretty pleased. I agree with raghunath that they are a little bassy, at least compared to my last cheap pair. But I don't mean that in a bad way. I like the way they sound.

They're a very comfortable fit and come with 4 different sets of plastic tips in different sizes so you can use the one that fits your ears best. I am having a little trouble with my left ear - I can't seem to get the fit to be as snug as I would like. It slips out sometimes. It seems that if the plastic were a little firmer it might make a better seal. But it's a minor issue which I hope will go away with more use.

It's great to have a quality noise-isolating headset to use for phone calls. Whew. So much better for talking. And the remote button on the cable will operate with your iPod/iPhone as a pause / skip / call answer button. There are also volume up/down buttons. The piece of plastic that houses these buttons is a little larger than I would like and makes coiling them a bit harder. But it feels solid, which is more important.

Overall happy with the purchase, except for the fact that I bought them on impulse from the Apple Store and therefore paid a terribly high price. Ugh. I should have checked the "buy now" prices on the right side of this page first!!!
Wow, great review! Thanks for sharing. 
I've been looking for a replacement for the factory headphones.  Will give these a try.