ELPCU
New Head-Fier
- Joined
- Nov 16, 2014
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Alclair Curve Universal Monitor is an earphone with dual balanced armature. Many people might say "What is this thing?" That's why I am writing this review! Let's see
Inside of the box
Alclair Curve Universal Monitor cost $199 at this point. Homepage said it is during sale and original price is $249. I do not know when do they stop sale, but anyhow it cost $199 now. Small box came to my home. the box is pretty small.

Inside of the box, there is no extra package box but an earphone case and one Alclair sticker.

Inside of the case, there is earphone unit itself, and 2 extra set of foam tips. Foam tips are inside of net

Comply foam tips. Isn't it familiar?

To be honest, packaging is kinda poor. I know Alclair is not big company, but no extra packaging inside of shipping box, and no cleaning tool for IEM without filter? Come on. I know not having extra box does not break my earphone in case, but having extra box will make package looks cleaner. It is not a big deal at all, but I do not feel of purchasing 200 bucks item.

Earphone case itself is pretty nice. It feels like fiber yet hard. Inside of case feels have soft fiber touch. I really like this case, because it is not too big nor too small. I do not like too large case for IEM. One of big advantage of using earphone over headphone is portability, and Case such as Felican case is not compact. Since this earphone is designed for average customer instead of professional. I think this case is way more practical than Felican case. Sure it is not the smallest case ever, but those smallest cases will not allow you to put extra tips. This one have extra space to put extra foam tips.
It looks small but it can hold my bigger CIEM earphone unit with extra replacement cable and cleaning tool.

You can still close it without streching zipper.

Carabiner keychain is nice too, because you can do this.

doesn't it look convenient case?
Aesthetic / Durability
First look of Alclair Curve Universal Monitor was pretty good.

It has transparent housing and organized inner look. On the top of transparent housing, cresent design add extra bit of uniqueness.

However, Only about half of the housing is transparent. Another half is non-transparent gray. I really hoped Alclair makes this earphone full transparent unit. Unfortuately it is not fully transparent.

Another aesthtic problem is detail. It might be hard to tell on the picture. If you look closely, the earphone does not look very premium. The housing does not seem super cheap, but it still feels like plastic. There is a small circle mark or other small marks caused from manufacturing, and there is a seam between transparent section and non-transparent section. In other words, detail looks will take away premium feeling of the earphone itself.

These kinds of marks... looks like mark of plastic injection.
Nothing terribly wrong about plastic injection mark, but it does not look very premium.
At least it is not good as SE846 in terms of premium look
By the way, this earphone has no built-in filter.

It makes me to buy extra pairs of Tx-200(same size comply foam tip with filter)

In terms of durability, of course I cannot say too much yet, since I have not used this for a long term. It has advantage of having detachable cable. Though cresent design of housing forces you to choose cable connector for earphone unit carefully. If you want 3rd party cable. Otherwise connector would not fit even they uses same 2-pin design.
Considering breaking cable is arguably most common durability issue of the cable, having detachable cable is something people might want, and it surely has it.

On the other side of tokens, it's plastic-like housing makes me worry a bit. When I first tried to detach cable from earphone unit, I held my earphone unit firmly to give force to take out cable. And I heard clicky sound from earphone housing caused by 2 different sections(transparent and non-transparent section) It might be still early to judge durability, but at the same time, it just does not give a feel of bulkiness nor sturdiness.
Ergonomic and Fit.
In terms of ergonomic and fit, Alclair Curve Universal Monitor is the best universal earphone/IEM I have ever tried to put on. I have used Apple earpods, UE Triple.fi 10 pro, Etymotic Research er4pt, B&O A8/Earset 3i. Bose QC20, Bose IE, IE2, B&W C5, Phonak PFE 122, Hifiman RE-0, Sennheiser OMX980, CX880, Aurvana Air, etc. (I cannot remember all earphones. Lists are just earphone that pops in my head within 30 sec)
First thing you might notice is that cresent design is designed to be fit in ear conch. It is similar to Shure's earphone in that sense.

Here is photo of Alclair Curve Universal Monitor in my ear. (I know quality of photo sucks badly. Sorry. It's because I took it with my front camera myself, and crop ear portion only with paint program. There is no one helping me out for taking this photo.)
It fits very well. I was worried a bit that end of earphone may poke my ear conch, but when I opened my case, I found it is smaller earphone than I thought. Alclair Curve earphone units do not interfere with my ear conch at all. Plus, there is more than just cresent design.

There is slight curved in part of earphone unit. It's like a little shallow basin. I was quite surprised by this, in a good way. Because.....

Here is a photo for my own ear. See? there is a little bump in my ear, which is common bump in many people's ear. And this curved part is designed to not interfering or pushing that bump part of ear. It seems Alclair carefully designed to have a great in ear fit, and it's very good. For me, it is the best universal earphone fit in terms of ergonomic.
There are a few (with decent or good sound) earphones that make minimal long term usage pain, such as Apple earpods. However, generally those earphones do not have secured feeling. They do not feel staying inside of ears firmly. Earphones, which tend firmly stay in ear, are mostly over-ear earphone or earphone with hanger. And this is one of best fit earphones I have ever tried among those. I can even sleep without pain with this earphone on my ear. Most earphones came out from my ear at the morning if I do this, since I took out unconsciously during sleep, and even my custom IEM came out after I wake up.
Though this is not fair comparison because CIEM unit is bigger and when I put my head side, my pillow push my CIEM inward, which likely make some pain, Alclair Curve's fit is comparable to my custom IEM.
They used comply foam tip T-200, Comply foam tips generally give good fit. Though tips such as T-500(biggest earphone bore) does not fit well in my ear, Alclair curve has no problem since it has much smaller bore compared to T-500
There is some nitpicking issue I have though. First issue is the cable. cable guide can make a long term usage pain if cable guide is not positioned properly. And since cable connector of the earphone positioned too inside of earphone, users need to manage cable guide properly. Otherwise, you can have some sore pain after long term usage.

This circled part is where you can have some long term usage pain. Cable should be avoided from ear helix.

This is right way to bend cable.
Another one is typical one for earphone that is designed for over-ear earphone. You almostly have to wear it with over-ear style. At least it is not design to just put on ear without putting cable around ear. You need to properly wear it for great fit. Though these kinds of design also have its own advantage: hard to have wrong insertion depth. What I mean right insertion depth is about how manufacturer(in this case Alclair) wants you to wear. In other words, It is hard to wear push tip too deep or too shallow.
Isolation and cable
Now, isolation is decent. Not much to say here. It does not give excellent isolation level such as that of Etymotic Research. However, that's because Etymostic Research has tips that goes super deep, which does not fit my ear at ALL. This earphone unit stays ear well unlike earphone like Triple.fi(due to its large unit plus no securing mechanism). Then it's all about what kinds of tip is.

Comply foam tips. Period. (They do not even give any of other silicon tips to compare!) It gives decent isolation. At least way better than most of earbuds. It has generally better or at least comparable isolation compared to most silicon tips in the market. Cable is twisted. It is triple braided from 3.5mm connector to Y intersection. After Y intersection, it is double braided.

At Y intersection, it has transparent plastic to tighten cable.(I have no idea what is name of that transparent thing is LOL)
Cable is fairly flexible. It is about 50 inches long. Cable itself has some microphonic, but since earphone is designed for overear, which is way to reduce microphonic. If you wear it properly microphonic is not bad at all. It has nice 90 degree angle 3.5mm connector.

By the way. I really want Apple remote volume controller cable. I know it is not easy task for a company like Alclair to have a cable with Apple volume mic built in, Still, I want one! D:
I know there are 3rd party cables, but most of 3rd party cable with buit-in mic and volume controller sucks. Leave me very few choices.
Before getting in sound quality review
I personally do not like to write a headphone review. For me, writing a headphone/speaker review is a huge dilemma, because there are too many reviews based on placebo effects when reviewers talk about sound signature, especially toward positive side. It means many headphone reviews tends to be written more positively rather than actual headphone/speaker sounds like. I really do not like to put any opinion based on placebo effect in my review. I would rather give less information if information have a good chance of being inaccurate.
However, it is virtually impossible to eliminate those placebo effect, unless I am doing double blind test or having a instrument to measure frequency response and electromagnetic property of headphone. And I do not have those instruments nor knowledge to do measure or to interpret those data. Although the dilemma makes me hesitate to write my review, I decided to write this review just because there was no review about Alclair Curve Universal monitor when I was researching before purchasing this in-ear monitor.
It feels walking in a minefield when I buy stuff without any review. (Side talk : Alclair, you guys have to work on marketing. Throw out some samples to reviewer, or do something.)
Eliminating placebo effects in headphone review is eliminating subjectivity. And if I tries to eliminate subjectivity, then there is nothing to write about sound signature! It is a big dilemma for me, as a person who do not believe review not based on measurement data. I know some reviewers can describe sound with minimum bias in their reviews, but for me, it is a difficult task.
I do not trust my ear too much except obvious differences, when it comes down details. Thus, I will write about sound when I feel it is obvious difference, but if not obvious, I will not.
Please excuse me, if my review does not cover too comprehensive or complete sound signature for your taste. I will intentionally not mention some of those. And I tend to write more negatively. I will comparing this with Hidition NT-6(newer version), which costs $1200. Yes, some people may argue it will be unfair to do this, comparing $200 universal IEM and $1200 custom IEM. But in this way, I will not garnish my review with overly positive adjective. Just do not think this Alclair Curve Universal Monitor is the worst earphone in the world just because I used more negative expression compared to other reviewers.
For those who have no idea how NT-6 sounds like, NT-6 has no exaggerated base and mostly flat(have about equal amount of bass, mid, and treble) in terms of Olive-Welti target, except resonance at 10k. It has narrow peak at 10k, and 10k peak lead pretty much only big downside or biggest unique sound signature of nt-6(depends on how you look at it). It is my reference earphone. Simply, it is slightly treble emphasized IEM
Detailed review with measured data from Rinchoi can be found in here.
http://rinchoi.blogspot.com/2013/06/hidition-new-tears-6-new-vs-old.html
Sound Quality
When I first use this earphone, I immdiately notice this earphone has too much bass. Other things? Midrange sound is clearly lacking compared to bass and treble. Treble is somewhat between them. which means close to adequate level but I feel it is slightly boosted than flat. Again, First impression pops out in my mind was too much bass. Second thing pops out mind is that vocal is away from where vocal should be. This characteristic is even more stand out if you are not using this for music. When I tried to use this for listening gameplay from youtube or other non-music stuff. Voice is clearly far away than sounds comes from my speaker(B&W mm-1). Actually it was fairly fun experience when I was using this for my gaming experience.
I already knew it has more bass and treble than mid; I was actually seeking for somewhat V-shape(more bass/treble than mid) graph sounds earphone. Since most of my other main gears are too flat. I wanted earphone that has more fun sound signature. And it is actually V-shape FR graph sound, although it is definitely more bass than I wanted. Amount of bass is not extremely a lot unlike some of Dr. Dre stuff. And Alclair curve does not lose every aspect of sound except bass unlike some of Dr. Dre stuffs. I suspect it has clearly more than 10dB boost in bass, and probably midrange deep is 5dB or more. Of course my ear is not a measurement tool, I might be inaccurate. If it is inaccurate, it is likely be even more than what I have said. If I am not accurate, I am trying to underestimate rather than exaggerate my impression to reduce placebo effect. When I mention number such as 10 dB, I was actually suppressing down number expression than number that pops in my brain at first.
The point is, this is very clearly away from something called flat or Hi-fi. Purist audiophiles unlikely prefer sound of Alclair curve universal monitor at all. Well, extra bass is not necessarily worst thing ever. And for outdoor purpose it has more advantage than indoor. Since most outdoor noise are low frequency, having extra level of bass will negate outdoor noise. If you are not purist audiophiles, Alclair curve is worth of look. But you still need to be aware drawbacks. I will complain about those drawbacks but most content I wrote was in-door listening. Sound signature is fairly dark(or warm if you prefer) and vocal is bit more distance from where it sound be. Treble does not stick out too much, which is good in this case. I remind you my sound quality review is more about negative review and I was comparing with NT-6, one of treble king IEMs. It means there is not too much harsh treble or not too much sibliance. It may be also sign of slightly boosted treble, since I am comparing it with CIEM that has slight treble emphasis.
However, excessive bass inevitablely harms some of sound clarity. When I listening songs without drum or other low pitch instrument sounds, it handles well. However when song includes drum or other low pitch instrument, treble is bit hidden behind low pitch instrument sounds.
What about mid? Its even more behind than treble. Again, vocal sound is clearly away from where vocal should be. And if there is mid pitch instrument at background, they are harder to hear. I can still hear them, but they are much less stand out than sounds of nt-6. Even bass clarity is a bit harmed by excess bass itself. It is more boomy than it should. It does not have the sharpest or the most clear bass. I mean It is not muddy bass at all; Alclair curve clearly has punchy power.
Funny thing is this 'hidden behind bass effect' makes somewhat unique sound stage of this earphone. You can hear sounds from distance which makes sense of space. Depends on how you put it, it can be called unique sound stage or wierd feeling of space or artificial sound stage.
I am stopping here. I do not trust any more detail information from my ear.
Conclusion

Clearly, I do not recommend Alclair Curve universal monitor for purist. This is not an IEM you should looking for as a reference IEM. Nope. Not at all. If you seeks for very clear mid or high, it is not for you as well. If you are looking for the most clear mid, this will be terrible sound for you. If you are okay with bloated bass or finding more fun sound, then Alclair curve might worth of look.
For guy like me, this is not definitely first-choice earphone. However, even without great fit, its sound is okay for my secondary or tertiary earphone. I wish it has slightly less bass than this, then I would be completely happy rather than just okay. Well, again I am not completely satisfied with its sound. But I know there are many people who loves bass. and since it's bass quality is at least decent. If you are on bass world, then it is surely a good choice.
Fit? Hell YEAH. I am 280% satisfied, not even worth of argue! It clearly exceeds my expection, comfort is arguably on the level of custom IEMs.
Some earphones may have similar level of 'low long term pain', but they come out much easily from your ear. While this one consistently stays in my ear even during sleep. (Though I recommend to turn off your music before you sleep for your ear health.)
What I really recommend this earphone is for outdoor casual use. Especially those who work out/exercise a lot.
It has great long term fit and it stays in your ear very firmly. There are not too many earphones that does them both at the same time. It has bit more bass than bang of the bucks sound IEM, but you might need some extra bass to negate outdoor noise. And they even have a great outdoor clamshell case as well!
Sure, it might still have leftover extra bass even after negating typical outdoor noise. However, if you are not purist, a bit of leftover extra bass is not bad at all. I think in those cases Alclair curve universal monitor is definitely go-to earphone.
Unfortunately, it seems Alclair sucks at marketing, so I am writing review for them. Whether it is helping them or hurting them. Well, saying bad thing is better than saying nothing in this case IMO, because worst thing is no one knows anything about this thing. So in that sense I guess my review is helping them out.
Thanks for reading my first review in Head-fi
Inside of the box
Alclair Curve Universal Monitor cost $199 at this point. Homepage said it is during sale and original price is $249. I do not know when do they stop sale, but anyhow it cost $199 now. Small box came to my home. the box is pretty small.
Inside of the box, there is no extra package box but an earphone case and one Alclair sticker.
Inside of the case, there is earphone unit itself, and 2 extra set of foam tips. Foam tips are inside of net
Comply foam tips. Isn't it familiar?
To be honest, packaging is kinda poor. I know Alclair is not big company, but no extra packaging inside of shipping box, and no cleaning tool for IEM without filter? Come on. I know not having extra box does not break my earphone in case, but having extra box will make package looks cleaner. It is not a big deal at all, but I do not feel of purchasing 200 bucks item.
Earphone case itself is pretty nice. It feels like fiber yet hard. Inside of case feels have soft fiber touch. I really like this case, because it is not too big nor too small. I do not like too large case for IEM. One of big advantage of using earphone over headphone is portability, and Case such as Felican case is not compact. Since this earphone is designed for average customer instead of professional. I think this case is way more practical than Felican case. Sure it is not the smallest case ever, but those smallest cases will not allow you to put extra tips. This one have extra space to put extra foam tips.
It looks small but it can hold my bigger CIEM earphone unit with extra replacement cable and cleaning tool.
You can still close it without streching zipper.
Carabiner keychain is nice too, because you can do this.
doesn't it look convenient case?
Aesthetic / Durability
First look of Alclair Curve Universal Monitor was pretty good.
It has transparent housing and organized inner look. On the top of transparent housing, cresent design add extra bit of uniqueness.
However, Only about half of the housing is transparent. Another half is non-transparent gray. I really hoped Alclair makes this earphone full transparent unit. Unfortuately it is not fully transparent.
Another aesthtic problem is detail. It might be hard to tell on the picture. If you look closely, the earphone does not look very premium. The housing does not seem super cheap, but it still feels like plastic. There is a small circle mark or other small marks caused from manufacturing, and there is a seam between transparent section and non-transparent section. In other words, detail looks will take away premium feeling of the earphone itself.
These kinds of marks... looks like mark of plastic injection.
Nothing terribly wrong about plastic injection mark, but it does not look very premium.
At least it is not good as SE846 in terms of premium look
By the way, this earphone has no built-in filter.
It makes me to buy extra pairs of Tx-200(same size comply foam tip with filter)
In terms of durability, of course I cannot say too much yet, since I have not used this for a long term. It has advantage of having detachable cable. Though cresent design of housing forces you to choose cable connector for earphone unit carefully. If you want 3rd party cable. Otherwise connector would not fit even they uses same 2-pin design.
Considering breaking cable is arguably most common durability issue of the cable, having detachable cable is something people might want, and it surely has it.
On the other side of tokens, it's plastic-like housing makes me worry a bit. When I first tried to detach cable from earphone unit, I held my earphone unit firmly to give force to take out cable. And I heard clicky sound from earphone housing caused by 2 different sections(transparent and non-transparent section) It might be still early to judge durability, but at the same time, it just does not give a feel of bulkiness nor sturdiness.
Ergonomic and Fit.
In terms of ergonomic and fit, Alclair Curve Universal Monitor is the best universal earphone/IEM I have ever tried to put on. I have used Apple earpods, UE Triple.fi 10 pro, Etymotic Research er4pt, B&O A8/Earset 3i. Bose QC20, Bose IE, IE2, B&W C5, Phonak PFE 122, Hifiman RE-0, Sennheiser OMX980, CX880, Aurvana Air, etc. (I cannot remember all earphones. Lists are just earphone that pops in my head within 30 sec)
First thing you might notice is that cresent design is designed to be fit in ear conch. It is similar to Shure's earphone in that sense.
Here is photo of Alclair Curve Universal Monitor in my ear. (I know quality of photo sucks badly. Sorry. It's because I took it with my front camera myself, and crop ear portion only with paint program. There is no one helping me out for taking this photo.)
It fits very well. I was worried a bit that end of earphone may poke my ear conch, but when I opened my case, I found it is smaller earphone than I thought. Alclair Curve earphone units do not interfere with my ear conch at all. Plus, there is more than just cresent design.
There is slight curved in part of earphone unit. It's like a little shallow basin. I was quite surprised by this, in a good way. Because.....
Here is a photo for my own ear. See? there is a little bump in my ear, which is common bump in many people's ear. And this curved part is designed to not interfering or pushing that bump part of ear. It seems Alclair carefully designed to have a great in ear fit, and it's very good. For me, it is the best universal earphone fit in terms of ergonomic.
There are a few (with decent or good sound) earphones that make minimal long term usage pain, such as Apple earpods. However, generally those earphones do not have secured feeling. They do not feel staying inside of ears firmly. Earphones, which tend firmly stay in ear, are mostly over-ear earphone or earphone with hanger. And this is one of best fit earphones I have ever tried among those. I can even sleep without pain with this earphone on my ear. Most earphones came out from my ear at the morning if I do this, since I took out unconsciously during sleep, and even my custom IEM came out after I wake up.
Though this is not fair comparison because CIEM unit is bigger and when I put my head side, my pillow push my CIEM inward, which likely make some pain, Alclair Curve's fit is comparable to my custom IEM.
They used comply foam tip T-200, Comply foam tips generally give good fit. Though tips such as T-500(biggest earphone bore) does not fit well in my ear, Alclair curve has no problem since it has much smaller bore compared to T-500
There is some nitpicking issue I have though. First issue is the cable. cable guide can make a long term usage pain if cable guide is not positioned properly. And since cable connector of the earphone positioned too inside of earphone, users need to manage cable guide properly. Otherwise, you can have some sore pain after long term usage.
This circled part is where you can have some long term usage pain. Cable should be avoided from ear helix.
This is right way to bend cable.
Another one is typical one for earphone that is designed for over-ear earphone. You almostly have to wear it with over-ear style. At least it is not design to just put on ear without putting cable around ear. You need to properly wear it for great fit. Though these kinds of design also have its own advantage: hard to have wrong insertion depth. What I mean right insertion depth is about how manufacturer(in this case Alclair) wants you to wear. In other words, It is hard to wear push tip too deep or too shallow.
Isolation and cable
Now, isolation is decent. Not much to say here. It does not give excellent isolation level such as that of Etymotic Research. However, that's because Etymostic Research has tips that goes super deep, which does not fit my ear at ALL. This earphone unit stays ear well unlike earphone like Triple.fi(due to its large unit plus no securing mechanism). Then it's all about what kinds of tip is.
Comply foam tips. Period. (They do not even give any of other silicon tips to compare!) It gives decent isolation. At least way better than most of earbuds. It has generally better or at least comparable isolation compared to most silicon tips in the market. Cable is twisted. It is triple braided from 3.5mm connector to Y intersection. After Y intersection, it is double braided.
At Y intersection, it has transparent plastic to tighten cable.(I have no idea what is name of that transparent thing is LOL)
Cable is fairly flexible. It is about 50 inches long. Cable itself has some microphonic, but since earphone is designed for overear, which is way to reduce microphonic. If you wear it properly microphonic is not bad at all. It has nice 90 degree angle 3.5mm connector.
By the way. I really want Apple remote volume controller cable. I know it is not easy task for a company like Alclair to have a cable with Apple volume mic built in, Still, I want one! D:
I know there are 3rd party cables, but most of 3rd party cable with buit-in mic and volume controller sucks. Leave me very few choices.
Before getting in sound quality review
I personally do not like to write a headphone review. For me, writing a headphone/speaker review is a huge dilemma, because there are too many reviews based on placebo effects when reviewers talk about sound signature, especially toward positive side. It means many headphone reviews tends to be written more positively rather than actual headphone/speaker sounds like. I really do not like to put any opinion based on placebo effect in my review. I would rather give less information if information have a good chance of being inaccurate.
However, it is virtually impossible to eliminate those placebo effect, unless I am doing double blind test or having a instrument to measure frequency response and electromagnetic property of headphone. And I do not have those instruments nor knowledge to do measure or to interpret those data. Although the dilemma makes me hesitate to write my review, I decided to write this review just because there was no review about Alclair Curve Universal monitor when I was researching before purchasing this in-ear monitor.
It feels walking in a minefield when I buy stuff without any review. (Side talk : Alclair, you guys have to work on marketing. Throw out some samples to reviewer, or do something.)
Eliminating placebo effects in headphone review is eliminating subjectivity. And if I tries to eliminate subjectivity, then there is nothing to write about sound signature! It is a big dilemma for me, as a person who do not believe review not based on measurement data. I know some reviewers can describe sound with minimum bias in their reviews, but for me, it is a difficult task.
I do not trust my ear too much except obvious differences, when it comes down details. Thus, I will write about sound when I feel it is obvious difference, but if not obvious, I will not.
Please excuse me, if my review does not cover too comprehensive or complete sound signature for your taste. I will intentionally not mention some of those. And I tend to write more negatively. I will comparing this with Hidition NT-6(newer version), which costs $1200. Yes, some people may argue it will be unfair to do this, comparing $200 universal IEM and $1200 custom IEM. But in this way, I will not garnish my review with overly positive adjective. Just do not think this Alclair Curve Universal Monitor is the worst earphone in the world just because I used more negative expression compared to other reviewers.
For those who have no idea how NT-6 sounds like, NT-6 has no exaggerated base and mostly flat(have about equal amount of bass, mid, and treble) in terms of Olive-Welti target, except resonance at 10k. It has narrow peak at 10k, and 10k peak lead pretty much only big downside or biggest unique sound signature of nt-6(depends on how you look at it). It is my reference earphone. Simply, it is slightly treble emphasized IEM
Detailed review with measured data from Rinchoi can be found in here.
http://rinchoi.blogspot.com/2013/06/hidition-new-tears-6-new-vs-old.html
Sound Quality
When I first use this earphone, I immdiately notice this earphone has too much bass. Other things? Midrange sound is clearly lacking compared to bass and treble. Treble is somewhat between them. which means close to adequate level but I feel it is slightly boosted than flat. Again, First impression pops out in my mind was too much bass. Second thing pops out mind is that vocal is away from where vocal should be. This characteristic is even more stand out if you are not using this for music. When I tried to use this for listening gameplay from youtube or other non-music stuff. Voice is clearly far away than sounds comes from my speaker(B&W mm-1). Actually it was fairly fun experience when I was using this for my gaming experience.
I already knew it has more bass and treble than mid; I was actually seeking for somewhat V-shape(more bass/treble than mid) graph sounds earphone. Since most of my other main gears are too flat. I wanted earphone that has more fun sound signature. And it is actually V-shape FR graph sound, although it is definitely more bass than I wanted. Amount of bass is not extremely a lot unlike some of Dr. Dre stuff. And Alclair curve does not lose every aspect of sound except bass unlike some of Dr. Dre stuffs. I suspect it has clearly more than 10dB boost in bass, and probably midrange deep is 5dB or more. Of course my ear is not a measurement tool, I might be inaccurate. If it is inaccurate, it is likely be even more than what I have said. If I am not accurate, I am trying to underestimate rather than exaggerate my impression to reduce placebo effect. When I mention number such as 10 dB, I was actually suppressing down number expression than number that pops in my brain at first.
The point is, this is very clearly away from something called flat or Hi-fi. Purist audiophiles unlikely prefer sound of Alclair curve universal monitor at all. Well, extra bass is not necessarily worst thing ever. And for outdoor purpose it has more advantage than indoor. Since most outdoor noise are low frequency, having extra level of bass will negate outdoor noise. If you are not purist audiophiles, Alclair curve is worth of look. But you still need to be aware drawbacks. I will complain about those drawbacks but most content I wrote was in-door listening. Sound signature is fairly dark(or warm if you prefer) and vocal is bit more distance from where it sound be. Treble does not stick out too much, which is good in this case. I remind you my sound quality review is more about negative review and I was comparing with NT-6, one of treble king IEMs. It means there is not too much harsh treble or not too much sibliance. It may be also sign of slightly boosted treble, since I am comparing it with CIEM that has slight treble emphasis.
However, excessive bass inevitablely harms some of sound clarity. When I listening songs without drum or other low pitch instrument sounds, it handles well. However when song includes drum or other low pitch instrument, treble is bit hidden behind low pitch instrument sounds.
What about mid? Its even more behind than treble. Again, vocal sound is clearly away from where vocal should be. And if there is mid pitch instrument at background, they are harder to hear. I can still hear them, but they are much less stand out than sounds of nt-6. Even bass clarity is a bit harmed by excess bass itself. It is more boomy than it should. It does not have the sharpest or the most clear bass. I mean It is not muddy bass at all; Alclair curve clearly has punchy power.
Funny thing is this 'hidden behind bass effect' makes somewhat unique sound stage of this earphone. You can hear sounds from distance which makes sense of space. Depends on how you put it, it can be called unique sound stage or wierd feeling of space or artificial sound stage.
I am stopping here. I do not trust any more detail information from my ear.
Conclusion
Clearly, I do not recommend Alclair Curve universal monitor for purist. This is not an IEM you should looking for as a reference IEM. Nope. Not at all. If you seeks for very clear mid or high, it is not for you as well. If you are looking for the most clear mid, this will be terrible sound for you. If you are okay with bloated bass or finding more fun sound, then Alclair curve might worth of look.
For guy like me, this is not definitely first-choice earphone. However, even without great fit, its sound is okay for my secondary or tertiary earphone. I wish it has slightly less bass than this, then I would be completely happy rather than just okay. Well, again I am not completely satisfied with its sound. But I know there are many people who loves bass. and since it's bass quality is at least decent. If you are on bass world, then it is surely a good choice.
Fit? Hell YEAH. I am 280% satisfied, not even worth of argue! It clearly exceeds my expection, comfort is arguably on the level of custom IEMs.
Some earphones may have similar level of 'low long term pain', but they come out much easily from your ear. While this one consistently stays in my ear even during sleep. (Though I recommend to turn off your music before you sleep for your ear health.)
What I really recommend this earphone is for outdoor casual use. Especially those who work out/exercise a lot.
It has great long term fit and it stays in your ear very firmly. There are not too many earphones that does them both at the same time. It has bit more bass than bang of the bucks sound IEM, but you might need some extra bass to negate outdoor noise. And they even have a great outdoor clamshell case as well!
Sure, it might still have leftover extra bass even after negating typical outdoor noise. However, if you are not purist, a bit of leftover extra bass is not bad at all. I think in those cases Alclair curve universal monitor is definitely go-to earphone.
Unfortunately, it seems Alclair sucks at marketing, so I am writing review for them. Whether it is helping them or hurting them. Well, saying bad thing is better than saying nothing in this case IMO, because worst thing is no one knows anything about this thing. So in that sense I guess my review is helping them out.
Thanks for reading my first review in Head-fi