Upon getting them the first thing I noticed was the build quality, its very good as you'd expect from HiFiMan and also how comfortable they are. I had other cheaper headphones but they weren't this comfortable, I can wear these for hours no problem at all.
 
As for the SQ its just great and I'm quite hard to please when it comes to SQ.  Three things I look for in a good IEM is detail, good mids and a good soundstage so I was hoping the HE-400 could stack up. Now with the soundstage I knew they would be good being open-backed and man are they, very wide with excellent depth and good height along with great imaging and good separation. Now the mids are the meat of music so they have to be good and the HE-400 while not as forward as I like they sound great, smooth and warm with good detail just how I like it. As for detail that was my biggest worry because coming from BA based IEM's like the SM3, e-Q5 and BA200 they all have very good detail and micro detail. The HE-400 really surprised me with the level of detail, now they don't quite have the micro detail of most good BA IEM's but they're not to far behind, I don't feel like I'm missing anything in the music. The bass and highs are also very good with the highs being a bit bright but not to bad over all and the bass on planars I've heard is very good and the HE-400 is no different with nice punch and very good depth and rumble but these aren't true basshead headphones though.
 
So over all I'm very happy with the HE-400 and honestly I haven't really been using my IEM's since I got these a little over a week ago. They have good detail and a great presentation so if your looking to get into good headphones unlike Beats or even Bose the HE-400 is a great place to start and I'm already looking into getting the HiFiMan HE-500 because planar magnetic is the way to go imo.

Not going into much detail because I've only heard from someone for a little while.
 
Bass and especially the sub-bass is outstanding I mean you can really feel the bass from the Kelton sub woofer.
 
Mids are clear and detailed and can be forward sounding at time as well, they're much better than the FXT90's mids imo.
 
Highs are smooth yet crisp and detailed also which gives the FXZ100 and balanced signature over all.
 
Presentation is very good with a spacious soundstage that's very wide and good imaging and separation as well.
 
I'll change the review and make it more in depth in a few weeks after I've had more time with the pair I'm getting but first impressions are very good.

This Isn't going to be a long review more so just some impression on how it sounds.
 
First thing that jumped out at me was the clarity over the FiiO E11, the BH was clear and more transparent making the E11 to sound much darker with less detail.
 
The bass boost or the LF switch gives the bass on my SM3 V2 more punch but what it really adds is depth, the sub-bass is much more prominent and I hear bass lines that I never heard before with the E11.
 
Soundstage gets wider as well as giving better depth to my SM3 and now the imaging and separation sound perfect, I can sit there listening imagining am at the club or festival (listen to mainly EDM) as the music is surrounding me.
 
There's really nothing bad about the amp that I can pick out and for $100 the C&C BH is a great bang for buck amp that really shouldn't disappoint anybody imo.

Accessories,
 
5 Sets of Tips
Protective Case
Airplane Adaptor
Ear Tip Cleaning Tool
 
Build Quality / Fit,
 
On the build quality the X10 is very well built imo.  The housings are made of aluminium and I also think because they're so small that they'll last longer.  They have a good strain releif coming of the housing into a good splitter that has a neck clinch.  On do the cable is pretty much your standard cable that most IEM's have with the plasticy feel to them.  The jack has the gold plating with the same kind of strain relief as on the housing.  Over build quality is very good, I'd say some of the best of and IEM I've had.
 
Fit can be described in one word, "perfect".  These things fit me perfectly with the Klipsch patented oval shaped tips that I've also found to be some of the best fitting and isolating tips you can get.  The size of the IEM make so you don't even really feel them after awhile, these truly are some of the most comfortable IEM's you can get imo.  The isolation as I mentioned is outstanding, I'd say its almost as good as the Etymotics which are considered to be the best.  I can't say it enough these fit really good and I can't see anyone have a problem with them at all.
 
 
Sound Quality,
 
Bass - The bass is one of the strong points of the X10's presentation.  They have a very good amount of impact in the mid-bass and as for depth they're no slouch either with plenty of sub-bass imo.  Its well textured with good speed and decay times.  For the EDM I listen to the X10's bass is more than sufficient and I think even some bassheads would enjoy the X10's low end.  I think they out perform the FAD Heaven in the bass, the Heaven I feel still has a bit more impact and depth over all but not buy much and the X10's bass sounds cleaner with better texture over all, they're just a solid performer in that area.
 
Mids - The mids are probably what I like most with IEM's as I've become a pretty big mid-head and the X10's midrange like the bass doesn't disappoint.  They're on the warm and smooth side and are also a bit forward but nothing I'd call mid-centric.  The have good detail but are missing some of the micro detail of other high end sets like the SM3 but it doesn't take away from the SQ imo.  They do an excellent job of isolating the vocals and dare I say almost as good at that as the BA200 thought they're not quite that good at it but still better than many other higher end IEM's I've heard.  I think the mids of the X10 are a lot like the Sony XBA-1 but better at isolating vocals.
 
Highs - Not much different from many other warmer mid forward IEM's in that they're laid back and fatigue free.  The have a decent amount of sparkle, just enough to get the detail you want from the treble.  So I'm not going to go into more detail as the highs sound a lot like the highs of the BA200, SM3 (though not quite as good) and other warm sounding IEM's.
 
Soundstage - This part surprised me because I wasn't expecting the soundstage to be as good as it is.  What surprised me the most was how good they portrayed width, the sound much wider than what I was expecting and they also have a fair amount of height along with good depth.  As for the separation and imaging they're both good but not quite to the level of the SM3 or BA200 but I wouldn't expect them to be though at the MSRP price of $350 you'd want better separation and imaging.
 
Conclusion - So the Klipsch Image X10, its a very good IEM for the price they're going for now which is around the $100 mark.  Very clean and impactful bass, warm and smooth mids and highs along with a very well rounded soundstage makes these a very nice bargain imo, so if that sounds like something you'd like I say don't hesitate to get a pair.
 
Rating - 9

 
Specs,
 
Driver - 3 drivers (3 way crossover)
Frequency response: 20 Hz -18 kHz
Impedance: 34 ohms
Sensitivity: 122 dB/mW
 
Accessories,
 
wipes, tool, soft bag, proprietary 2 pairs or silicon tips, 2 pairs of comply tips
 
Build Quality / Fit
 
The build quality I'm guessing is much better than the first version of the SM3 because I've read they had quite a few problems with them braking but I don't see much trouble with the newer version the SM3 V2.  The housing which was one of the problem areas before feels like its make of good plastics and all the seems fit perfectly.  Now there's a removable cable and its just like the ones UE and Westone use so finding replacements are easy if you have to do so.  The cable its self is pretty much just like the one on the Heir 3.Ai with the same Y split, jack and braided cable so it feels well made also.
 
Fit I could see being a problem for a small few.  The housing its self and the way the cable fits I could see people with small ears having a problem with getting them to fit comfortably.  I think you'd be able to get a good seal but were the housing rests in the inside of your ear there might not be enough space but I think most like myself would be fine.  Since they do fit me I have no problems with comfort and most shouldn't either.
 
 
Sound Quality,
 
Bass - In a word perfect, for me this is the type of bass I like.  Its got plenty of punch and depth but in a controlled way and by that I mean it never feels to light or to heavy.  There's enough punch for EDM and hip hop but its smooth enough for classical.  I like to go up just a touch in the EQ or with an amp to give it that extra little something and for me that's the perfect fit and I haven't heard many IEM's with this kind of control.  Now the Sony player I use with them has some of the best bass of any pmp I've heard but even on other players the SM3 still has the same control and feel.
 
Mids - The SM3 is know to have a more mid-centric sound but its not as forward as some that I've heard.  They don't try and push the mids in your face, they do it in a more subtle way which makes everything sound in proportion.  They isolate vocals about as well as the BA200 which is fantastic at that and midranged melodies and instruments sound perfect imo.  Most of my favorite IEM's all have that warmer signature and the SM3 is no different and imo it makes music sound more realistic than the bright analytical IEM's.  Detail is as good as anything I've heard and really I think the mids are also perfect.
 
Highs - This is how I like my highs, just enough sparkle that they sound crisp but never get to harsh but I have had a small bit of sibilance but that was do to the recording and not so much the IEM.  With EDM you get all the high frequency detail but it never over shadows the mids which is the way I think good IEM's should sound because who wants to be blasted by bright highs that take away from where 70% or even 80% or the music is.  Like with the bass and mids I also think the highs are perfect (you see where I'm going here).
 
Soundstage - Here's where the SM3 gets so much fun.  The soundstage is above average but not technically the largest I've heard, I feel the RE262 was a bit bigger though it doesn't always feel that way.  The SM3 surrounds you in the music with sounds coming from every direction and thats because it has the best 3D presentation of any IEM I've heard and I would be surprised if there's one better.  With such a good 3D presentation it can make the soundstage sound bigger than its is and at times is sounds as large as the IE8 though I know its not, its sounds strange but when you hear it you'll know what I mean.  The soundstage has become something I really focus on in an IEM and the SM3's is my favorite one by quite a bit.
 
Conclusion - Over all this is a great IEM with better build quality than the first version and with the removable cable you don't have to worry about the strain relief braking.  Now as for SQ the SM3 is the best IEM I've heard and even though its priced anywhere from $300 to $400 I think its worth every penny.  Its a great mid forward signature IEM with awesome detail and an amazing soundstage and the closest to perfect I've come across.

I'm not going to go into a long review on here (thats for my blog) but I have to say the SM3 V2 (which is the same thing but with a better housing and removable cable) is easily one of the best universals you can get.  From the punch bass, crisp yet never harsh highs, those wonderful forward detailed mids to the above average soundstage and the amazing 3D imaging there's nothing I can find wrong about how they sound.  I love the warm smooth mids that have as much detail in them as an IEM I've heard, even as much as the very resolving Heir 3.Ai.  The one thing that may be a problem for some would be the new housing on the V2 because it is quite large and it just fits on the inside of my ears which aren't small but other than that the new build on them is great.  The removable cable is a big plus and is the same as the UE and Westone cables so after market cable will be no problem at all.
 
All in all these are a fantastic IEM and I'd recommend them to anyone wanting a warm detailed IEM with great imaging.

 
Price - $150 on ebay
 
Specs,
 
Drivers - Dual Balanced Armature
Frequency Response - 20Hz - 20kHz
Impedance - 35 ohms
Sensitivity - 121 @ 1kHz
Isolation - 26dB
Cord Length - 52 cm (plus 75cm extension)
 
 
Build Quality / Fit,
 
The build quality of the BA200 is very nice.  It has the first flat cable that I like and the cable feels nice and strong.  You get an extension cable because for some reason they made the cable very short and I have no clue why because its unusable but with the extension its the perfect length imo.  The driver housing is plastic and feel strong and the Y-splitter is a tank and even though its big (because it has circuitry in it that helps the BA200 sound good with different sources) doesn't bother me at all.  They use a straight plug which I like more than the L shaped now because when in my pocket it doesn't bend.  So all in all I feel the BA200 is a very well built IEM.
 
As for the fit there's no problem in that department either.  At first the cable over the ears wasn't staying put but after you wear them for awhile they form to the ear much better and I have no problems now.  With any of the tips they feel comfortable but with the Comply they're really comfortable and isolation is very good.  Like the build quality fit is also good.
 
 
Sound Quality,
 
Bass - Before I got them there was mixed reviews I read about the bass, some said they had plenty while others said a little bass light.  Now there not going to wow a basshead but I think they do have plenty of bass with really good impact for a BA and nice depth as well.  I like the texture and detail of the bass also and for me at least there's plenty for music like hip hop and edm.  When amp with something like the E11 on EQ1 or 2 the bass has very good impact and it bring out more depth as well and over all they respond well to amp'ing.
 
Mids - This is the sweet spot of the sound signature with lush smooth sounding mids.  I don't know if I'd call them mid-centric because they don't sound as forward as even the e-Q5 but vocals present very nicely as well do all the other midrange sounds.  They portray some distance but it also isolates vocals very well so they can sound mid-centric at times but other times they sound more like a nicely balanced monitor.  I really like the mids on the BA200 and they're one of my favorite midranges I've heard.
 
Highs - Going along with the over all smooth signature of the IEM the highs are also very some but they still sound crisp with good sparkle more so than the RE262.  Cymbals and high hats sound good and female vocals never sound sibilant or harsh.  These are one of the first IEM's that I can listen to at a lower volume and still get nice sounding treble without have to go up high on the volume like with some other warmer IEM's.
 
Soundstage - Another strong point of the signature is the soundstage with good width and depth along with a good portrayal of height.  The soundstage is a lot like the one on the e-Q5 which is also very spacious sounding.  The separation is very good and you can pick out every instrument and sound in a track easily.  Imaging is also very good, well really its one of the best I've heard out of the over 30 IEM's I've had so far.  I love the presentation of the BA200 because its a mixture of the e-Q5 and RE262's soundstage which are 2 of my favorites.
 
Conclusion - The TDK BA200 is easily one of the best IEM's under $300 because of its smooth detailed sound and spacious presentation and anyone looking for that type of sound should have the BA200 on their short list for sure.  At around $150 now and available in the US its one of the best bang-for-buck IEM's you can get and is one of my top 2 or 3 that I've heard.
 
Rating - 9.35 / 9.4

 
Specs,
 
Housing - Stainless Steel
Driver - Custom-made Balanced Armature
S.P.L - 112 dB
Impedance - 16 ohms
Cable Length - 1.2m
Weight - 16g
 
Accessories,
 
6 Sets of Tips
Steel Carrying Case
 
Build Quality / Fit
 
The FAD Heaven IV like the e-Q5 is very well built imo with the stainless steel housing that looks really nice.  They have a flat tangle free cable not unlike Beats that also gives them a nice look, really these are one of the nicest looking IEM's I've had a chance to use.  They have a L shaped plug with the standard gold plated jack.  I've had them get caught and pulled out of my ears and the cables held up great so the build quality of these are quite good.
 
As for the fit there's really nothing to complain about at all.  With the 2 different style tips they give you its not hard to get a good isolating fit with these, I like the more rounded tips but the others work just as good.  I thought they might get a little heavy feeling after a long listening session because of the steel housing but not so they felt fine after I had them in for about 4 hours.  Like the e-Q5 the don't have the little chin slider that helps you get a more secure fit but since these are worn down you really don't need one imo.  Over all a very nice fitting IEM that can be worn for long periods of time with no problems.
 
Sound Quality,
 
Bass - The bass of the Heaven IV was quite shocking to me but in a very good way.  They have the most bass impact and depth I've heard from a single BA by far.  They can compete with they bass of the triple BA TF10 no problem which when you think about is kinda amazing for a small single BA.  The bass is very strong but doesn't over power the mids or treble imo and they sound great with hip hop and edm and I could even see some bass heads that would like the response of the Heaven IV's bass.
 
Mids - Here's where the Heaven IV stands out from the crowd with a quite unique sounding midrange.  Its hard for me to describe them because I've never heard an IEM with this kind of midrange presentation before.  They have a warm tone with good detail but it feels like theres some extra space in there some how.  I'll listen to the same track with my e-Q5 then with the Heaven IV and say a melodies that sound more distant with the e-Q5 is more forward of the Heaven but not in a mid-centric way, like I said it hard to explain but the coloration they did to the mids works with these.
 
Highs - Like many other IEM's I've reviewed the highs are a bit more laid back but still have some sparkle when the track calls for it.  Good detail but they might miss out on some of the micro detail that say the R-50 or HF5 can pick up on.  The extension of the treble is good and I can hear it up around the 16 kHz area.
 
Soundstage - This is another strong point of the Heaven IV with a very spacious sounding soundstage.  They are as wide sounding as the GR07 with the depth and height of the e-Q5 which makes them one of the largest soundstages I've heard from an IEM.  Imaging is quite good but there are sets that do it better but separation is top notch and you can hear every individual instrument and sound from a song.
 
Conclusion - Over all the FAD Heaven IV is a very nice sounding IEM and in some ways sounds a lot like the e-Q5 with a better bass response and soundstage than most other single BA's.  The mids though is where these differ from every other IEM I've heard and that's not a bad thing at all.  At $198.99 from Musica Acoustic they're are very reasonably priced IEM that I think more people will start looking at for there next IEM purchase.

 
Specs,
 
Driver - (Moving) Balanced Armature
Impedance - 40 ohms
Frequency Response - 10 Hz to 20 kHz
Sensitivity - 118dB at 1 kHz
Cable - 4N OFC
Max Rated Imput Power - 5mW
 
Build Quality & Fit,
 
I have to say these have the best build quality I've had in an IEM.  The housing is beautifully crafted out of aluminium with a very nice silver finish.  You would have to really work hard the brake or damage them though I can see them getting scratched but not very easily.  The cable coming out of the housing has no strain relief but I don't see that being a problem at all and they have a red ring to indicate right and black for left which makes them easy to tell apart.  Down to the splitter its bulky and well made but theres no slide for helping to secure the fit but its not a problem imo.  The rest of the cable is very thick and seem like it will hold up very well over time and the plug has a nice strain relief with the slandered gold plated jack.  Like I said before the build quality on these are just top notch.
 
As for the fit they are also great.  I could see people with really small ears having a problem maybe but for most they are a perfect size.  They slide in easy and are very comfortable and even though they're made of metal they aren't heavy feeling at all but aluminium is one of the lighter metals.  They seal nicely and have average isolation probably around the 22dB to 26dB range, they don't post that spec anywhere at least I couldn't find it.  They do have some microphonics but much less than the e-Q7 and its not to bad, I'd say a bit better than average if that makes sense.  So I feel they're very comfortable with an easy fit for most people.
 
 
Sound Quality,
 
Bass - These have a unique kind of bass for a BA and it because it not a regular armature in that its called a moving armature which is like a cross between a BA and dynamic driver and you can hear it in the bass.  Its punchy with good depth like a fast dynamic driver would have and I really like the detail and feel of the bass a lot.  Along with the speed and texture I've never heard bass like this from a single BA or even a multi driver BA, it really is quite dynamic with a very fun signature.
 
Mids - As many that have heard both the e-Q5 and e-Q7 this is where the e-Q5 starts to differentiate its self from the e-Q7.  They're not as forward and are more in line with the rest of the frequencies yet still play a very large part of the over all sound signature.  Smooth, vibrant with plenty of detail and the add airiness which we'll get to later really makes the mids sound lush and fluid though different sources give them a slightly different sound.  I like the mids of the e-Q5 much more than my old e-Q7 because of the balanced and added air but if you are someone that just loves vocals then the e-Q7 might be a better choice.
 
Highs - Another improvement over the e-Q7 is in the e-Q5's treble.  The extend higher with a more crisp and sparkly signature that adds to the over all detail being better than the e-Q7 imo.  Now depending on your player they're are some moments that can get a little harsh but thoughs are few and far between but a warm amp like say the E6 would take care of that but it really doesn't happen enough at to warrant that imo.  Again the added air really makes a big difference in the sound of the highs so Ortofon really fixed everything that I thought could be better on the e-Q7.
 
Soundstage - This is where these bad boys really shine (but everything else is still just as good).  The soundstage is one of the most spacious sounding that I've heard not just from a single BA but from any universal IEM.  Width is great with a lot of out of the head moments along with excellent depth and nice bit of height which I'm getting better at noticing.  Like I said the added airiness really makes these sound wonderful and at least to me the sound larger than the TF10 which is known for having a large soundstage.
 
As for the imaging its very good as you'd think from a top-tier IEM with placement that makes me feel like I'm actually in the club or at a concert.  Separation is also very good and you can definitely hear where everything in a track is coming from.
 
Conclusion - These have quickly become my favorite IEM that I've heard (knocking of my beloved R-50's) and as a result I've sold of most of my others.  At they're current price of $200 these are easily one of the best values you can get.  Forget what you might think of a single BA because this sounds much better than any that I've heard.  So if your looking for a very spacious, detailed, balanced sound with dynamic driver style bass (like I said though a fast analytical dynamic driver sound) I don't think you can do much better than the e-Q5.  

 
Specs
 
Price - $119.99
Driver Unit - Knowles TWFK dual BA
Impedance - 31ohms, 110dB @ 1kHz
Frequency Response - 20Hz - 20kHz
 
Accessories - Now they don't have one of the most accessory packed sets really its quite small.  You get 3 sets of S,M,L tips which might present some people to have fit issues but for me the stocks ones that were on them work great.  You also get a nice little round case and a airline adapter, so theres not much to talk about here.
 
 
Build Quality - I think the build quality is pretty good for a small company.  The IEM housing seem built well and the rubber thats over it seem like it would protect it from cracking or braking.  I really like the braided cord and its has a small amount of stretch to it though it can get tangled from time to time but its not to bad.  The Y connection imo is one of the best I've come across as its very forgiving and has a strain relief on both ends.  I wish they had a L shaped jack but the straight one the use is still very good and for $119.99 I'm not complaining.
 
 
Fit - As for the fit they're very good, easy to put in and I get a good seal with the stock tips (made with non-allergic silicone).  Comfort is A+ I don't feel them after a few mins and the memory wire they use its much better then say the TF10's.  Another effect from the rubber around the housing is that it adds to the comfort so you don't have the hard plastic in your ear.
 
 
Sound - Now for the really reason you by IEM's, the sound (at least for me it is).  
 
 
Treble - The R-50 has some of the best all around highs I've heard from IEM's.  What I mean by that is they have wonderful detail and extend as good as any of my other IEM's but they're still very smooth and non fatiguing.  They can be bright when the track calls for it but they still retain that smooth over all feel.  Compared to the treble on my PFE 112 the R-50 has the same amount of micro detail but on tracks that have bright treble it doesn't get sibilant like the PFE can.  
 
 
Mids - The mids are very clear and also have great detail.  They're not really forward or even a little recessed but centered perfectly and vocal sound where they should while being crystal clear and they sound very natural.  For music like edm they mid range melodies and synths sound very good as well.  Now comparing the R-50's mids to some of my mid centric like the SE425 or e-Q7 they have all the detail but you can hear everything else very clearly and not being dominated by the mids like mid-centrics can do. 
 
 
Bass - As for the bass this is one of my favorite parts (along with soundstage).  For a BA and quite a small one at that the bass has a good amount of punch for the 4/4 kicks in edm and it really can go pretty deep, also has just the right amount of mid bass to.  I love the texture and the decay is really good for a BA so bass heavy music like edm and hip hop work well with the R-50. Now they're not bass monsters by means but have plenty if your not a bass head.  Another comparison this time with the TF10's which have a good amount of bass for a BA the R-50 stacks up really good.  While they don't have the same quantity of the UE's I think the R-50 has better quality like in the sub an mid bass, its just an over all cleaner sound imo (I do use a bit of bass boost whether with an amp or by EQ'ing).  
 
 
Soundstage - This is one of the places where the R-50 shines imo.  While it might not be the largest soundstage out there its defiantly still on the larger side.  The width is excellent and I get a good since of depth all so, I'd say width is as good as the GR07 but with better depth.  I'm not to good at judging height so I can't speak on that.  They also have a nice 3D presentation and I'd say its as good or better than the EPH-100.  Separation and Imaging is another strong suit of the R-50.  I can make out ever little nuance of a track and hear where everything is coming from.  I don't think I have a pair thats better and of the more expensive IEM's I've heard theres not one that just kills theses either.  Between these and the TF10's which also have a large soundstage the I'd say the TF10 is a bit wider but both have the same amount of depth and the R-50 has better separation and imaging imo.
 
 
Conclusion - For the $119.99 these go for I think they're easily one of the best bang for bucks around, I can't think of any that would sound much better at their price point.  With a very detailed sound as you'd expect with a good TWFK based IEM it does it in a smoother way than most and I've had mine in now for almost 4 hours which is hard to do with really bright analytical IEM's imo.  All in all these are fantastic and I hope more people give them a try, like the ones who have another TWFK IEM and these would be a great compliment to those.  Also if you like the analytical sound but would like it to have a little bit of a warmer presentation the R-50 is perfect.  So I'm sold and looking forward to what Rockit Sounds might have in-store sometime in the future.