Logitech UE 900s Ultimate Ears Noise-Isolating Earphones (NEWEST 2014 VERSION)

General Information

The Ultimate Ears 900s Noise-Isolating Earphones were designed to make your music come alive-to reveal layers and details you never knew were there. They transcend a technological device-unlocking the depth, richness and emotion of the music you love.

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Pros: Fantastic detail
Big soundstage
Brilliant Imaging
Great bass extension
Tip fitment kit is fantastic
Cons: Poor material quality
Pinhole is easily clogged. irreparably
These are the kinds of IEMs that impress you when you see them, then sorely disappoint once you pick them up. All until you actually listen to them and are floored once again. Please note, this is an update/edit of the review and initial impressions I gave on Massdrop here.

Aesthetics - 8.0/10
Despite what looks like cheap materials, these are some really, really, sharp looking IEMs. They've ditched the "professional" design found on many of it's competitors (I'm looking at you, Shure) for some colourful and even relatively stylish buds. The blue is really a pretty shade and the black and silver face-plate looks great when the paint is still all there.

Fit - 7.5/10

The silicone tips are fairly soft and the foam tips are functional and non-abrasive. It's particularly noteworthy that Ultimate Ears includes a full second set of tips, attached to little sticks (that are removable) to be used to find the perfect fit for your ears.. That said, I would suggest making an investment in aftermarket eartips (such as Comply - myself using T200) . The body of the IEM doesn't fit nearly as flush as some of it's competitors (i.e., Westone, Shure, etc.) but still overall it's sufficiently comfortable.

Build - 5.2/10
I may be wrong but everything seems to be made out of fairly simple, cheap plastics. Every part feels sturdy enough but that's about it, nothing feels quite as premium as it's MSRP would imply. That said, nothing felt particularly cheap either. One major point of contention for me is the paint on the face-plates of the earbuds, as after only a few months of use they've worn away quite a bit and it's left my earbuds look quite bad. Had I paid full MSRP for these, I would be truly livid with how they've held up, but considering I got them below half-price on Massdrop I'm not all that bothered.

Sound - 9.1/10
After giving these earbuds more than 250 hours (honestly It's probably closer to 400 hours), here are my thoughts on sound.

As one would assume, with a dedicated sub-bass driver, it would sound pretty good. And that assumption is not wrong, as the sub-bass is both impactful and fast, really fast. I was quite impressed with the power and extension of these buds. I find Jazz, Soul, and some Electronic music really show off this aspect.

The bass on these IEMs continue to have solid punch and detail. It also comes across with moderate amount character (this may or may not be a good thing depending on how analytical you want your IEMs to be) which makes it nearly playful when listening. They still give you a reference level of precision, but there is a slight warmth to these IEMs which really makes them geared more specifically to listening than producing.

Click here for an example that plays very nicely with the bass and sub-bass driver of these IEMs.

They're present, but definitively less than impacful. The mids are not BAD per se but they don't leave much of an impression. These earbuds have a subtle V-shaped sound signature so if you listen to a lot of music with prominent female vocals, these might not do you right. Despite this, the mids are still as detailed as any other part of the spectrum, if not a little bland and recessed when compared with the rest of the sound.

The highs are crisp and detailed while still keeping a lid on things, never becoming sibilant or too sharp. They aren't quite as precise as some other high-end IEMs but you defintely won't find yourself disappointed with the highs on these buds.

Sound Stage:
For IEMs, these produce such a wide sound stage it is surprising. Many of my friends have stated that it sounds like you're wearing much larger cans and I for one definitely agree. Despite providing a large sound stage for earbuds, it is still only large for earbuds and won't take on some great open-backed headphones. Regardless, Ultimate Ears really made the best of what they could with the physical limitations at hand.

Even if the sound stage may be tight when compared to some larger headphones, the work that the 900s do in this space is nothing short of witchcraft. The stereo imaging is superb if not perfect. The level of instrument separation is as good if not better than nearly any other in-ear headphone I've ever heard.

Overall - 8.1/10
Despite having relatively low scores in both Fit as well as Build Quality, sound quality is paramount to everything for me and these headphones has great sound in spades.

Triple X

Pros: bass texture, subbass, instrument separation, soundstage
Cons: flimsy strain reliefs, covering pinhole changes sound
[color=rgba(0, 0, 0, 0.870588)]A little about Me: my taste in headphones is approximately neutral with a touch of warmth. In the past I've owned several of the class favourites, such as the Shure SE215, Ety HF5 and Klipsch X10. These headphones were a replacement for the VSonic GR07 Bass Editions I misplaced at a concert, but I thought an upgrade was in order so I splashed out. I paid £220 from amazon for them. I use triple flange deep insertion eartips, not out of the box. [/color][color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]Sound:[/color][color=rgba(0, 0, 0, 0.870588)][/color]
[color=rgba(0, 0, 0, 0.870588)]The first thing I should point out is that in the nozzle there are two bores, a main ~2mm bore and a ~0.2mm bore. Bear this in mind.[/color][color=rgba(0, 0, 0, 0.870588)][/color]
[color=rgba(0, 0, 0, 0.870588)]The best thing about the sound is the bass. With the small bore open, it is deep, well textured slightly emphasised in the subbass over the midbass. Despite the depth I've never noticed it get flabby. It's essentially the best bass I've heard in an IEM (though I'm by no means an expert). With the small bore filled, the bass becomes much more flat, even slightly behind the higher frequencies, depending on whether you cover or properly fill the hole. It doesn't lose the nice texture though. [/color][color=rgba(0, 0, 0, 0.870588)][/color]
[color=rgba(0, 0, 0, 0.870588)]Using shallower tips decreases the bass quality and quantity, and I felt the complies provided made it a lose a little of its tightness. [/color][color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]The midbass bleeds the tiniest bit into the lower mids, but its not really perceptible unless you're active listening for it. [/color][color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]The mids themselves are pretty flat response-wise, but the texture is lovely. I wouldn't say the smoothest I've heard, but they have a nice "twang" to them. Male voices sound good but these really shine with the female voices and guitars, both electric and acoustic. [/color][color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]The highs are present and not veiled, but they never really take the lead. They're always just.. there. Having said that, I can hear crisp hi-hats and sweet flutes and synths.[/color][color=rgba(0, 0, 0, 0.870588)][/color]
[color=rgba(0, 0, 0, 0.870588)]I felt with the small bore covered the highs became a little overbearing for my tastes.[/color][color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]Soundstage is something I really enjoy and something I felt the VSonics did quite well at, but on these its just something else. It's wider and higher than (on-ear) HD25's to my ears, though the depth leaves a little wanting. [/color]
Instrument separation is really very good, and goes hand in hand with the soundstage in providing a nice immersive experience.[color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]I think these would work well with rock, metal, electronic, hip-hop with the small bore open, and with acoustic, classical and pop music with the bore closed off. [/color][color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]Build:[/color]
[color=rgba(0, 0, 0, 0.870588)]The 900s's predecessor, the 900, received a lot of criticism for its shoddy build quality. In the upgrade, UE changed the shell bonding method to ultrasonic welding, incorporated the connector into the translucent unibody, and a few other tweaks. The cable is connected by gold MMCX plugs which are very tight, though they spin a little easily. A small tube of connector cleaner is provided in case of gunk building up and shorting the connection. I can say they feel solid and I've been using them for a few months now. The strain relief is a little lacking, which is disappointing, and the heat shrink on one side is loose. However I'm not necessarily the kindest person to my IEMs. A hard shell and soft pouch are both provided and I use the pouch. The braided cord feels really nice and never tangles, plus a spare is provided ( but in black with no inline controls).[/color][color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]Comfort:[/color]
[color=rgba(0, 0, 0, 0.870588)]These have memory wire, which I dislike, and are worn over the ear, which I love. Having said that, the memory wire is excellent and has won me over. I find these extremely comfortable, though I appreciate comfort is one of the most subjective parts of an IEM. [/color][color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]Conclusions:[/color][color=rgba(0, 0, 0, 0.870588)][/color]
[color=rgba(0, 0, 0, 0.870588)]I love these little guys. For just over 200 quid you get a good quad driver IEM which can be upgraded into a custom if needs be. They sound great, they feel great, they look great. What more can you ask for? 9.5/10[/color][color=rgba(0, 0, 0, 0.870588)][/color]
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[color=rgba(0, 0, 0, 0.870588)]Want comparisons? Fire away.[/color]
Hi! I've demoed the K612 before, how do these compare?

I'm looking for something with good extension that can do well for jazz and classical music. I've used the Pinnacle P1, Brainwavz B100 and enjoyed a Senn HD600 demo - so I appreciate a signature between balanced and a v-shaped signature.


Headphoneus Supremus
Pros: Lots of accessories, instrument seperation
Cons: cable tangles, connector
UE 900S Unibody
I would like to first say thank you to Mrs. McDonald for sending me a demo unit to review. UE has some of the best customer service that I have experienced, they are very fast in responding to any emails with questions that I had. I am not employed or I am being compensated by UE for this review, this review is based on my opinions and all the photos were taken by me. A little about myself I don't consider myself a hard core audiophile like most people on this forum. I am 38 years old and have been into audio since I was 15, I like listening to music they way it was produced. I use in ear monitors for 8 hours a day at work, it try to use a different pair ever day to change it up. This review is more for the every day user that wants more from there music, I don't get to detailed with sound since I am terrible writer and I have only used these for about 15 hours.http://pro.ultimateears.com/products/custom-monitors/for-audiophiles/ue-900s
4 Proprietary precision balanced armatures
3-way crossover
Impedance (@1khz) 30ohms
Sensitivity 101.2db (50mV,1khz)
Frequency Response 20Hz-20khz
Noise isolation 26db
Connectivity 3.5mm gold plated
Dual Bore
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I used many different sources with these Fiio X1 with Fiio E07K, Lenovo Ultrabook with Audioengine D1, Samsung Alpha with Fiio  E11, Nuforce Hap-100 amp. An amp isn't needed but it improved the overall sound. I have only had the chance to use these for only about 15 hours since I didn't want to take a demo unit to work. The first time listening to these I was blown away, the way these separate instruments is impressive, listening to the Foo Fighters Skin and Bones you can clearly here every instrument from the orchestra. You can really here the fine details in the music, from hearing the performer taking small breathes of air between notes to the pick of the guitar hitting the strings. Listening to Match Box 20 live it sounded so natural, and my wife dragged me to about 6 of there concerts. Hearing the kick drum sounded life like and very realistic in some tracks you could hear the singers mouth rub up against the microphone. The soundstage is were I think the 900S excel you can easily hear the placement of every instrument from left to right to front to back with the singer at center stage.  These are definitely not a bass heavy iem from what I am used too, they have plenty of bass and it is very smooth and tight.  But when listening to it at a high volume the bass becomes distorted, this is at a volume that I don't listen to any way. Most of the music I listened too was in WAV or FLAC format when using MP3 format you can easily hear the difference with the 900S. Playing right from my phone the 900S sound good but adding a Fiio amp gave it a much fuller sound with a richer low end.
Some people suggest blocking the small port to get more low end, I have tried this and really like they way they are with it unblocked. In my opinion live recordings and rock and roll are the best kinds of music for these iem's. These are very well balanced, my friend let me borrow his Triple Fi10's to compare them both. The 900S midrange is fuller and richer then the TF10 and  the lower midrange is more prominent. The upper mids can seem slightly veiled on some recordings.
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Accessories and Build
2 detachable cable 1 blue with mic and controls 1 black
6 sizes of silicone ear tops 4 per size
3 sizes of memory foam 4 per size
1 hard case
1 pouch
maintenance gel
The 900S are the updated unibody iem's from the 900, do to quality problems. First impressions opening the box I was amazed of the presentation, you should have know problem getting the right seal with the amount of tips they give you. The box itself is pretty impressive, most boxes you just toss in the closet this one can be used for storage of all the accessories. Every accessory has its own little spot. It also has a soft pouch and a hard case that they fit nicely into. To get the right fit they made these paddles with the tip connected to it to check for fit, even the paddles are marked with the size on them.
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I chose to use the black cable, with memory plastic too wrap around your ear. This has to be one of the most comfortable cables that I have used it is very light and you forget there even there. The iem's sit flush within your ear, unlike the TF10's sticking out like bolts. Changing cables is one of the few problems I have with these, the MMCX connector is very tight I almost feel like I am going to break the plastic changing cables. I really like the cable that comes with these but it they tangle very easily, if you don't wrap them upright for storage when you take them out to use them can be a mess. I tried the blue cable making phone calls the person on the other end didn't even know I was using a cable. Overall design is very modern looking witch I really like. For having 4 balanced armatures these have to be one of the smallest designs out there. I have many pairs of iem's and I have never saw so many accessories that come with the 900S. They put a lot of thought in the presentation and accessories for the 900S. Strain relief seems good on the connector, the Y splitter is just a piece of heat shrink keeping things simple helps keep the weight down.
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It's easy to see how small these are compared to a penny, I really like the fit of these especially for wearing for long periods of time. Through the transparent blue you can see how small the drivers are. There is 2 bores for the sound to come out of 1 for high, mids and the other for the lows. The small bore is so small making it impossible to clean if it were to become clogged(a lot of head-fiers prefer this anyway). Wearing these for over an hour wasn't fatiguing at all these could easily be worn for extended periods.
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A lot of people think these might be overpriced, considering being 4 balanced armatures they are actually one of the cheaper ones. I think for the sound and clarity the 900S have they are priced just right.
For the way they separate instruments and how good the soundstage is these would give higher priced iem's a run for there money. I have over 18 pairs of in ears in all price ranges and these would have to be one of my favorite ones to listen too. Besides being very comfortable they just look good, just wearing them on the train I had 3 people ask me what they were. If your in the market for a universal in ear I would highly recommend these to any one. You will be surprised of how many accessories that comes with these and the packaging is more like a display case. The MSRP is $399.99 you can find them for under that price on many websites, you can get the first version for under $300 through some dealers. My only issue with these would be the cable tangling, and the MMCX connector being so tight but after some time it should loosen up. The new Shure SE846 have 4 drivers costing double of the 900S, and having a chance to hear the SE846 I would save my money and go for the 900S and take the other half of the money and buy something else and would be very satisfied with my purchase. After I spend more time I will update my review in more detail thanks for reading.


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