Reviews by SerenaxD

SerenaxD

100+ Head-Fier
Pros: SQ, value, comfort, battery life
Cons: None for the price
Product link:
https://www.amazon.com/AUSDOM-Cancelling-Headphones-Bluetooth-Technology/dp/B01ERMHI2E/
 
A bit about myself - I'm a female student from HK studying in the US. I mainly listen to classical, instrumental and pop, and in general I tend to enjoy headphones that are balanced with a touch of warmth. I also value a wide soundstage, accurate positioning, and to a slightly lesser degree clarity and micro-detail retrieval. I should also mention that I'm not very tolerant towards sibilance and shrill treble in general. I’ve used the QC25 for a long-ish period of time before, but this is the first pair of noise-cancelling (NC)+Bluetooth (BT) headphones I’ve owned. These retail for $129 on Amazon.
 
Disclaimer: I was kindly provided with the Ausdom ANC7 by @gracesheng for review purposes. However, I also took the retail value of the ANC7 into consideration while writing this review, so hope that’s good enough for all of you!
 
Introduction
 
The Ausdom ANC7 is a pair of NC+BT circumaural headphones. Compared to leading names such as Bose on the market, they are relatively low-priced at ~$130 per pair. This is, I believe, the first NC+BT headphone that Ausdom has released; however, they aren’t new to the BT headphone market at all – their M05 has been well reviewed on HF as a pretty decent BT offering at an even more decent price. However, some people claimed that they had somewhat of a boosted mid-bass section. The ANC7, therefore, is their maiden journey into the interesting realm of NC+BT headphones. I didn’t have extremely high expectations – I almost never do – but this pair of headphones has surpassed my modest expectations and deserves some recognition.
 
Appearance, Build Quality, Comfort & Others
 
These came in a simple cardboard box that had the product name and some specs on it – the usual. Unpacking the cardboard box, there was a hard case with carbon fiber pattern that was protecting the headphones. The case feels extremely sturdy – I’ve dropped my headphones (with the case) a couple of times since receiving them and they’ve held up just fine, as well as the case. Other accessories include a micro-USB to USB charging cable and a 3.5mm cable to use the headphones wired. The headphones fold flat and fit perfectly into the provided headphone case - nice portability form factor. Overall, there aren’t a lot of accessories but sufficient – I would also mention that the 3.5mm cable is pretty thin so I bought a cheap 3.5mm cable that also does the job and I heard no sound difference. I evaluated the wired sound according to my own cable as well.
 
The build quality is decent IMO, nothing spectacular but definitely good enough to withstand some torture – the carbon fiber looks pretty nice and, since I’m kind of a carbon fiber addict (see: me spending 2 hours to make the perfect carbon fiber sticker for my DAPs), I really like the design. The headphones are mainly made out of rubberized plastic that feels smooth to the touch. The pads are made out of a soft synthetic leather material that seemed comfortable but has its issues (which I will talk about later). The NC/BT control and switches are another favorite – very tactile to the touch and feels pretty solid. Overall, I would say that build quality’s average – probably middle of the road for a $130 headphone. The joints of the headphone, especially the cup adjustment hinge and the headband adjuster, could be more secure, but I wouldn’t call it flimsy either. In terms of ease of use, I felt that the button placement was pretty intuitive – once I realized that the switch for NC was on the left and BT on the right, I didn’t even need to look at the manual to figure out the BT controls – I just guessed and got it right. One weird thing about these, however, is that the cable entry is on the right earcup, which I find awkward. For others it might be convenient but I often tried to plug the cable into the left earcup and found nothing, and then trying to figure out what was wrong!
 
The pads on the ANC7 are pretty small for a circumaural headphone – I believe that some people may even need to wear them as a pair of supra-aural headphones. The headphones themselves are very light and are one of the more comfortable ones I’ve tried. The pads are rather shallow and my ears were often touching the bottom of the pads after half an hour or so of listening. I did attempt to try switching out the pads, but I still haven’t figured it out for fear of breaking the headphones – some brave soul should try it! However, the pads themselves are fine besides the depth; they are pretty soft and provide a decent seal, albeit not perfect. The swiveling earcups design also provide for a better seal that facilitates the NC. Another personal note – I have a small head, and even in the smallest setting the headphones were a bit too loose and big. Clamping force is low, but I couldn’t use these for more than 2 hours without taking a small break in the middle. These also isolate above-average – I wasn’t able to get a perfect seal with the pads due to the headband issue but, even with that, the headphones manage to isolate pretty well. Of course this is somewhat rendered useless with the NC but I still find the passive isolation pretty important due to the sound differences, which I’ll talk about later.
 
Some pictures – again, I’m not good at taking pictures so forgive the poor quality:
 
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I actually quite liked the minimalistic cardboard packaging.
 
 
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So they went with carbon fiber... :) 
 
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The headphones folded flat in the case along with its accessories - the USB cable, the 3.5mm cable and the warranty card.
 
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Headphones in action - they actually look rather nice with the red accents! 
 
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The cups are a bit shallow, but very comfortable nonetheless.
 
 
Sound Quality
 
This is a bit complicated just because there are four ways you could set up the headphones – wired with no NC, wired with NC, BT with no NC, and BT with NC. I’m going to evaluate the sound quality based on its performance wired with no NC because it was subjectively the best to me, but I’ll also evaluate them based on their performance in the other three settings. In general, these are pretty neutral headphones. They are decently balanced across the spectrum, with a slight mid-bass hump and decent treble extension.
 
Bass
 
These have some pretty linear bass with a small mid-bass hump. The closed-back design helps that as it provides the ANC7 with good impact despite the linear bass – I auditioned them with some pop pieces as well as some large organ pieces and never found the bass lacking. However, it does lack some oomph compared to basshead cans that I’ve briefly listened to, which is entirely fine by me. In fact, I quite enjoy the bass in passive wired mode; it is rather controlled and detailed in nature. They seemed to have removed the mid-bass hump that many people complained about in the M05 and made the bass a lot more “hifi” in nature. There was a little bit of distortion when I put on some really hard-hitting hifi testing tracks that I had just for fun, so that’s also something to keep in mind. Despite the good bass extension, I did find myself wanting a little bit more thump at times in the sub-bass region, but that’s just nitpicking now… J
 
Mids
 
Another can for the mid-heads! Mids are very forward in their presentation and are rather detailed. Despite the closed design, vocals don’t sound “stuffed-in” and have quite a bit of air to it. They don’t have the upper-mid spike that many headphones have – at most a very small one – and therefore female vocals sounds particularly pleasant, as evident from this song:
https://www.youtube.com/watch?v=oeEpRzU-mws
 
(Not the best quality, I know…)
 
Treble
 
Decent extension, nothing spectacular. I would say that it’s a little bit on the bright side, not really sibilant but enough for me to notice with some organ pieces that are in the higher octaves. Just like the rest of the spectrum, they are pretty detailed with a bit of sparkle. For most people it’d probably be very tolerable, but I’m kind of sensitive to treble so it was just very slightly irritating at times. Like I said just now, nothing much though – on the absolute majority of songs the treble isn’t too sharp yet maintains a nice amount of detail to satisfy hifi lovers. It was also slightly grainy at times, but nothing much. Considering the rest of the spectrum, I’d actually say that the treble is well balanced – kudos to Ausdom for tuning them well!
 
Across the spectrum and other notes
 
These are very balanced headphones – I’d argue that some may even call it analytical if they’re used to warmer headphones. They are pretty consistent across the spectrum in terms of the amount of detail, which is a wonderful thing. Those looking for extreme musicality might want to look elsewhere, but for me it was a pretty good balance between dry and musical. They manage to not sound dry while sounding fairly musical – you know, those Jack of all trades? Yeah, that’s the ANC7 in a nutshell. I would argue that you could find better bass/midrange/treble elsewhere, but even simply considering the SQ they offer a nice balance of everything to please most hifi lovers.
 
The soundstage is worth mentioning in its own paragraph (yay)! They have one of the more spacious soundstage I’ve heard in the closed headphone group. Many closed headphones sacrifice soundstage for isolation and produces a closed-in presentation that is, frankly, claustrophobic at times (the issues of growing up in a hifi family that exclusively messed around with speakers). The ANC7 is the exception to the closed-is-bad-for-soundstage rule by producing a presentation that is well rounded, out of the head and has good separation and placement. I love the soundstage on these things!
 
NC and Bluetooth
 
Let’s be honest here – most people buying them will be using them with NC on, BT on, or both. To a certain extent this section is even more important than the others because there’s probably no point in buying a pair of NC/BT headphones that perform horribly under those conditions, right?
 
Let’s move on.
 
NC on
 
The midrange sounded noticeably recessed with NC on and in a quiet environment, sounding muffled and distant. At the same time, the mid and sub-bass were boosted significantly – in general, they became a far more bass-oriented headphone than with NC off. I wasn’t a fan of this signature in a quiet environment because it destroyed much of the liquid midrange that was originally there. However, using them in a noisy environment, I finally realized why they were tuned that way. I was using them in my school dining hall with NC on and oddly everything sounded more in balance - the bass was not really overpowering any more. In terms of the NC itself, it efficiently blocked out most of the lower frequencies (although, of course, it doesn’t beat the QC25) and I could very easily see myself using them on a 16-hour flight from US to HK!
 
BT On
 
Surprisingly, the loss in sound quality when using BT was not as much as I expected. There was a loss in details and the sub-bass/treble were a bit more rolled-off. However, the excellent implementation of BT meant that the convenience of using BT sometimes trumped the drop-off in sound quality. Pairing was very easy with my Macbook Air, although I had issues originally pairing with my LG G4. I would say the range is more than the 10m quoted – I still had good connection around 2x m away.
 
Battery Life
 
Although I haven’t been using them extremely heavily, I’ve never needed to charge them since I received around 2 weeks ago. I would believe battery life is more than the 18 hours quoted (especially if you have mixed usage), but since I didn’t time myself using them or anything take this with a grain of salt. Regardless, these seem to have pretty good battery life.
 
Conclusion
 
These headphones are most definitely a solid offering by Ausdom at $130. I could find headphones with better comfort, or better bass/mid/treble, or even better BT/NC capabilities at similar prices, but what the ANC7 provides is an all-rounded package – a perfect jack-of-all-trades headphone. Combined with its comfort and the nice carrying case, I’d recommend the ANC7 to anyone looking for traveling headphones without wanting to burn their wallet down. Even on its SQ alone, however, they deserve a recommendation as a pair of closed, portable cans most notably because of its soundstage that I particularly enjoyed.
Wokei
Wokei
good review Serana...cheers
Podster
Podster
Nice job, you guys are going to make me spend more money like this!

SerenaxD

100+ Head-Fier
Pros: Mids, Overall details, Soundstage (after pad switch)
Cons: The annoying coiled cable, Stock pads
A bit about myself - I'm a female student from HK studying in the US. I mainly listen to classical, instrumental and pop, and in general I tend to enjoy headphones that are balanced with a touch of warmth. I also value a wide soundstage, accurate positioning, and to a slightly lesser degree clarity and micro-detail retrieval. I should also mention that I'm not very tolerant towards sibilance and shrill treble in general. 

Alternate link: https://girlinaudiophilia.wordpress.com/2016/05/16/thoughts-on-prodj100/

Introduction

The Koss ProDJ100 is a pair of portable, closed, over-ear headphones currently priced at ~$50 on Amazon. They are known (or not) for their good build quality and bang-for-buck. While opinions on them differ on Head-Fi, I decided to give them a try, as well as compare the stock pads to modded HM5 pads. I won't ramble on and on just so you can finish reading this review without me boring you to death and continue with your life!

Setup used:

Portable: Hidizs AP100

Desktop: Macbook Air –> O2 Combo


Appearance, Build Quality and Comfort

Being a budget-orientated headphone, the packaging is more of the no-frills approach. You get the headphones, a 3.5-6.35mm adapter and that’s it. If they were more expensive headphones I would complain, but for the price I got them there’s nothing to complain about.

I was surprised by the build quality of the these cans and how sleek they look. For under $100, these seem very sturdy. The outer shells are presumably made of aluminum and have a very nice finish to them – I’ve abused them since I bought them, leaving it in my bag without a case, and they’ve held up very well. I think the hinges are also made of metal, so I wouldn’t worry about them breaking on me. The headband, especially, is what I like the most about these headphones. It’s very well padded and sits on my head very comfortably. The one issue I have is the coiled cable – sure, it’s very well made and sturdy, but for portable use I’d like to have something just a bit more portable. Nonetheless, build-quality wise there’s not much to complain – it seems very well-built and probably would be able to withstand some torture.

The pads deserve some mention, and not really for a good reason. Those with large ears will especially feel the pain – the stock pads are extremely shallow and uncomfortable. I had issues wearing them for more than ~2 hours with the stock pads because of the medium clamping force and the fact that my ears were constantly being compressed by the base of the pads. Many people mentioned the M50x pads as an alternative, but personally I have issues with pleather/leather pads of any kind so I bought some HM5 pads and modded them. That solved the comfort issue. After changing pads, these are fairly comfortable, especially with the velour HM5 pads and low clamping force – I can see myself using them on 16-hour plane rides. Although the velour pads somewhat reduces the isolation, the sound leak is still small enough for these to be used in public areas.

Some glory pictures that are not very professional (sorry!)- 

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The nice aluminum cups
 
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The headband. If they used the same comfort level on the pads I'd be a very happy girl.

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Sturdy hinges - more headphone makers need to learn from this
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The mono-stereo switch, something I'll probably never use but neat feature anyway

Sound Quality

For a sub-$100 headphones, these aren’t bad. Changing the pads did alter the sound signature somewhat – however, I would still characterize both configurations as relatively balanced with a slight boost in the mid regions.

First Impressions:

Slightly harsh and tinny on the upper-mid and treble regions with some sibilance and somewhat boosted bass. Not exactly the best first impression, but people did mention something about burning in. The midrange is pretty clear for something of this price, though. Oh well, I guess I’ll let it warm up (literally) for a bit…

Note: I did find the harshness in the treble to soften after burning in. However, I do think that it may be a psychological effect – take this with a grain of salt! 

Treble:

The difference between HM5 pads and stock pads is small enough for me to discuss them together. Although the sibilance I heard out of the box has subsided somewhat, there is still some sharpness and harshness to the treble – by no means unacceptable though. The highs are slightly grainy but pretty detailed.

Mids:

I don’t really know how exactly to describe the mids… Imagine some honey, really thick and luscious. Then dilute it with some of water and sprinkle some table salt on it. Essentially that’s the mids – it’s not exactly thick and luscious, but not really thin either. In my opinion they do shine the most, but that’s also because I listen to a lot of vocal music. The upper mids are especially prominent, making them a good choice for female vocals. For example, listening to this track showcases to which the upper mids stand out – Solji’s voice sounds very vivid and forward. They are really detailed as well, probably the best I've heard since the glory of FLC8S. But then you can't really compare a $300 IEM to a $50 headphone, right? 

Bass:

This is where I felt pad-switching really made a difference. The stock pads made the bass somewhat heavier and there was a noticeable bump in the mid-bass region that I didn’t really like. However, even with the bump, the bass wasn’t overly prominent and was fast enough for the music I listen to. With the modded HM5 pads, it brought the sub-bass further up but pushed the mid-bass down, resulting in a more linear bass response that I liked better and made the mids shine more (which is what I live for anyway – liquid-gold mids!)

Across the spectrum:

This is another place where I found that the pads influenced the sound. With the stock pads, the headphones sound more closed-in – it was a good, well-rounded soundstage for a pair of closed headphones, but I would immediately feel closed-in after listening to open or even semi-open headphones like the HD668B. Switching to the HM5 pads, I didn’t get as good of a seal, so the soundstage got wider and the headphones opened up a bit more. I personally like the space and air of the HM5 pads, but YMMV (of course). Overall, I would characterize these as pretty balanced and neutral headphones that are perhaps slightly mid-centric.

Sources:

These are hella picky. I made the mistake of listening them unamped out of my phone and cringed at 1. the bad quality of the 128kbps mp3 that Spotify kindly provides to poor students like me, 2. the sibilant highs and 3. how closed in everything sounds. These headphones need POWER. Running them out of AP100 was a lot better, they sounded more balanced and less harsh – it was a nice pairing overall. Pairing them with the XDuoo X3 made the sound somewhat warmer and the treble less harsh, but much of the detail was smoothed out so I preferred the detail of AP100 to the smoothness of the X3. Of course, the desktop setting brought the best out of the DJ100 (IMO), providing enough power to drive these. They sound the most balanced from my desktop setup with no frequency overpowering others (which is kind of sad, considering I bought them for portable use…).

Pads(!):

I’ve already discussed the way HM5 pads affected the sound, so this is just on how exactly I “modded” the HM5 pads. Per the DJ100 thread’s instructions, I turned the pads inside out so the pleather backing (on the back of the velour, just between the thin fabric driver protection layer and the cushions) was facing out. I then carefully cut out four small holes (top, bottom, left, right) so that the memory foam inside the pads were exposed. It may be placebo, but I felt like this brought the bass back up a bit and added a bit of warmth to the sound that wouldn’t be present with stock HM5 pads (they did kill the bass and made them so harsh that I would scream).


Conclusion: 

These are good headphones for the price. Sure, it’s not perfect and I never expected it to be, but it did do the job well. I’m not sure I would recommend them at their MSRP, considering you still need to get pads to bring the best out of them. They aren’t exactly the best at portability and treble quality (IMO), but for the current street price I’d say these are pretty good everyday headphones if you need something to bring around and torture, as they provide a decent all-rounded package.

ricksome
ricksome
Very nice review. Thank You
bolmeteus
bolmeteus
Interesting review, koss sure knows how to surprise folks. Keep up the good work! 

SerenaxD

100+ Head-Fier
Pros: Sound, Versatility
Cons: Memory wire makes fitting harder
Product link: http://www.lendmeurears.com/flc-8s/ (apparently currently out of stock)
 
So... This is my first time writing a review after lurking in the depths of Head-fi for three years, so bear with me
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A bit about myself - I'm a female student from HK studying in the US. I mainly listen to classical, instrumental and pop, and in general I tend to enjoy headphones that are balanced with a touch of warmth. I also value a wide soundstage, accurate positioning, and to a slightly lesser degree clarity and micro-detail retrieval. I should also mention that I'm not very tolerant towards sibilance and shrill treble in general. As a student I can't really get expensive gear all the time, so the FLC8S are my second pair of top-tier IEMs. I got these during the "Double 11" Chinese holiday discount, when these were priced at USD $250. These have over 50 hours of burn-in, most likely 100 hours, on them. 
 
 
Introduction
 
The FLC8S, from FLC Technology, is a dual BA/single dynamic hybrid released this year. Its biggest selling point was the 36 different sound signatures that you could switch between by way of nozzles and filters. It's been reviewed by ljokerl in his huge IEM thread, but they haven't received much attention around here, even though I feel like they're one of the best universal IEMs I've ever listened to. As such, I've decided to write a review on these, so that more head-fiers can get to know and appreciate this pair of amazing IEMs. 
 
Setup used: 
Portable: LG G4 --> Dragonfly 1.0
Desktop: MacBook Air --> Objective2 Combo
 
 
Appearance, Build Quality and Fit 
 
I don't have the packaging with me right now, so sadly I don't have pictures of the box. It did come very nicely packaged with a three-layer intricate box. There was a little plastic bag of tips in 4 sizes (XS, S, M, L) with the clear M tips on the headphones. Other accessories include a pair of tweezers (which are actually not very useful), a screw-on metal hard case that seemed very sturdy, an airplane adapter, cleaning tool, and - most importantly - the keychain with all the filers and nozzles.
 
The FLC8S are not black as suggested by a lot of pictures online; instead, they are slightly blue in color.The IEMs themselves are surprisingly small. Even though they look plasticky, they seem well-made. Another bonus is the removable cables (I have not tried pulling them out yet - a brave soul who gets these headphones can try!). The cable's braided and seems pretty sturdy, even though the upper part seems a bit thin. It's slightly bouncy and microphonic, but I don't find it a major problem for me. One thing I'd like to mention is the memory wire portion, which created some troubles for me initially - I've been spoiled by the nice cables on the Westone 4 and thus found the memory wire pesky, as it prevented me from getting a secure over-the-ear fit and the headphones would move easily when I was walking. Eventually, though, I got used to it. Another problem is the non-angled nozzles, which may be a problem for some people. I personally found it fine but my friend did complain that it was slightly uncomfortable when he put them on, so that's also something to consider. Besides these two minor points, though, the fit is very nice, due to the small form factor. They're also very light, which helps a lot in securing the headphones. 
 
A major selling point is the tunability of these headphones - the nozzles are interchangeable, and there are two bass/sub-bass ports on the housing. It's surprisingly simple to switch, although I do recommend working on a clean surface - I've already nearly lost a few parts during the switching. Switching does require a (fairly) steady hand, but it's not a big issue - I believe most people won't have problems. The filter/port/nozzle container (whatever you want to call it) is tiny and the organization isn't exactly very elegant, but it gets the job done in a compact way. The container's also pretty portable and fits into the metal case. Overall, I'm surprised at the build quality of this - its tiny form factor and sturdy housing is pretty nice. *inserts gif of an excited child opening a package* 
 
Some pictures of the FLC8S ft. Macbook Air - sorry if they're not of very good quality: 
 
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There is a slightly metallic, bluish tint to the headphones. 
 
 
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The sub-bass port is on the inner surface of the housing (the red dot - high sub-bass port). From the top you can see the golden nozzles I'm currently using.
 
 
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The memory wire (top part) isn't exactly the most user-friendly, but the braided cables are rather thin and light (and sometimes bouncy). 
 
 
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The tuning container/keychain with all the nozzles and filters I'm not using. The container isn't very elegant but it fits everything in a small space.
 
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The dark grey dot on the housing is the bass tuning port (set to mid). The nozzles aren't angled, which may be a problem for some people.
 
 
Sound Quality
 
Since there are 36 possible sound tunings I'm not going to talk about all of them. After some experimenting, though, I've found a few pairings that I liked a lot. I'll briefly talk about those, as well as the overall sonic character of these gems. 
 
It's hard to discuss these without first talking about the tuning. So apparently there are 4 nozzles which influence the mids and the highs, 3 bass tuning filters, and 3 sub-bass tuning filers. I think everyone's going to stop reading this (and pass up on these things... 
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) if I discuss all these nozzles in detail, so I'll just stop obsessing over them now. I did give all of the combinations a try and eventually settled on a few that I found was wonderful for the genres of music I listen to. 

 
Pairing 1: Red (High sub-bass) - Grey (med bass) - Gold (high mids/med treble) 
Pairing 2: Red (High sub-bass) - Grey/Black (med bass/high bass) - Black (med mids(?!)/mid treble)
Pairing 3: Black (Med sub-bass) - Grey (med bass) - Green (med mids/high treble)
 
First Impressions: 
 
Geez, these things are good. Straight out of the box they sounded so smooth and clear at the same time already. The soundstage was spacious, vocals were airy, bass was there but not too much... Compared to the Westone 4s these sound very, very clear. The detail is really nice - I could hear the smallest breath noise from EXID - and vocals seem very natural. Treble seemed slightly brighter than what I'd gotten used to on the Westone 4, but in a good way. It was clearer, a bit more shimmery but not to the point of being sibilant or intolerable. Seems like we've got something glorious in the making here....
 
Treble: 
 
As I've said, I'm pretty sensitive to sibilance. By all accounts this isn't a pair of super bright headphones, even though with the green or blue nozzle you could make it border on burning your ears out. With the less treble-happy tunings, however, the treble is very clear and effortless - it's just there. Even when I used the green nozzles, with the right tuning I could tolerate the slight sibilance of the pop tracks. In orchestral music, especially, the treble is bright, but not overly so - just enough that you can maintain an excellent balance between detail and smoothness. Cymbal clashes sound very lively and energetic, with just the right amount of sparkle. It's a pretty good balance. With the more treble-happy nozzles, there's more detail (and sibilance), but with the right tuning and right tracks it can make the orchestral pieces sound incredibly detailed. The airiness also makes the treble extremely natural - and this isn't just limited to the green nozzles, it's the same for the gold and black nozzles.
 
Warning: with the wrong tuning using the green nozzles these can be extremely sibilant. You have been warned. 
 
Mids:
 
I enjoy the mids immensely on the FLC8S, especially with the gold nozzle. Vocals seem very airy and detailed; the mezzo-soprano's voice was captured perfectly - it feels like I'm listening to a live opera performance. There's probably no way to screw the mids up on this thing - they are that good. Nuff said on them.
 
Bass: 
 
Ah, the magical red filter. 
 
Orchestral music just comes to life here - the bass isn't exactly linear like reference flat headphones (Brainwavz B2, looking at you) - slightly more exciting than that. It adds another dimension to the music, there's the constant presence of the cellos and double basses; yet they don't overwhelm the piece - they're just there, like everything else. The sub-bass extends pretty low, with a nice rumble and I don't really notice any mid-bass hump - probably because I'm using the mid bass ports - and so the bass is very strictly controlled the whole way. It's also pretty quick - EDM lovers will probably be satisfied with how the bass handle your music. I'm really happy with how these handle the bass region - they're so in control, so authoritative when I give it my attention, yet unassuming when I need it to be. Probably my favorite part of the whole spectrum.
 
Across the spectrum and other notes:
 
These are incredibly coherent - @Flcforrestwei has done a really good job doing the crossover of drivers. It's hard to characterize them by a single sonic signature, but in general I'd say they are rather balanced, and slightly skewed towards either the cold side (with the green nozzles) or warm side (higher bass). There's no noticeable hump in any region as far as I'm concerned, and they are rather spacious no matter what you do to them. The soundstage is very wide, with pretty accurate positioning, and there is no veil even if you crank the bass up. They also don't have that artificial timbre that I sometimes get from other headphones (especially some IEMs with metal housing) - everything sounds very natural, and I noticed that especially with the mids, they just seem so effortlessly smooth yet detailed. It's a wonderful feeling.
 
I feel like the difference between the nozzles/ports are very noticeable and they really do a lot to change the sound, but ultimately the whole sound signature is still built on airiness, detail retrieval and great control - and no tuning can change that. Which is a good thing. 
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My favorite pairings... 
 
Combo 1: Red - Grey - Gold 
 
This is what I use for a lot of vocal-focused songs. I feel like it gives me enough bass rumble and excitement to pump up the piece, yet it doesn't overpower the vocals. With the gold nozzles, vocals are prominent, smooth and airy - very very realistic, as if I'm watching a live performance. I feel like the "magical red filter" just helps improve everything - bass presence, warmth, balance, etc. Using the black filter kind of takes away from the whole excitement. 
 
Combo 2: Red - Grey/Black - Black
 
Grey's a more neutral choice, and black's a bass cannon (well, not really, but on the scale of FLC8S...) 
 
I usually listen to pop songs with this combo, mainly because it's the most versatile and balanced across all spectrums. It doesn't provide any emphasis on any region and everything is smooth across the spectrum - no humps, no peaks - and even pieces that aren't mastered that well sound fairly musical. Again, the red filter does its magical job again by up-ing the oomph - the thumping when listening to dance pop music is incredible. When I use the black ports instead of the grey ones, the FLC8S instantly becomes a more bass-heavy headphone, akin to the Westones in quantity, but exhibiting more control in my opinion. 
 
And you know what the best part is? It still doesn't overpower the other parts of the spectrum. 
 
Combo 3: Black - Grey - Green
 
Pretty bright combo - I thought it wasn't my thing. I was wrong. 
 
Listen to a vocal piece with this and the green nozzle absolutely nails the high notes. Listen to an orchestral piece (and maybe using the "magical red filter") and hear the violins come to life, performing right in front of you. Although I'm usually not a fan of bright treble I absolutely love this combo for classical music - somehow the treble manages to be airy, detailed, with slight sibilance but tolerable by my standards. It gives me so much more detail to look for during orchestral pieces - the attack, the cymbals crashing, the balance... I'm amazed at what these little IEMs can pull off. It's bound to be something a treblehead will enjoy, listening to all the detail in there. 
 
Sources
 
Even though they are really, really easy to drive - already sounds pretty well straight out of G4 and a bit of improvement with the Dragonfly - they scale up pretty well. On my desktop setup, using the O2 enables me to hear even more detail on the same piece, and everything is just tightened up a tad bit more. Not a huge improvement, but definitely noticeable. 
 
 
Conclusion
 
I think airy and detailed seems to be the common theme between all the different sound signatures here - I feel like the FLC8S are an incredibly versatile pair of IEMs with its foundation built on the two qualities that I cherish most. For me, these are end-game IEMs - it does everything so well that I don't find myself reaching for other pairs of IEMs in my collection when I'm using these. Everything combined, the FLC8S are an amazing package despite the tiny, tiny problems in terms of design - I couldn't have asked for more in any pair of IEMs, albeit this pair priced at a mere $250 (or $310). Considering their asking price, I feel like these should receive more attention - even if they only had one sound signature - and everyone should have the opportunity to experience what they pack in such a tiny form factor. 
RollsRoys
RollsRoys
Thanks for the review, really interesting hybrid earphones 
karanehir35
karanehir35
I am pleased also FLC 8s.
pedronet
pedronet
Great review :) i hope to get a chance to listen to them one day
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