Simgot EA1000 "Fermat" In-Ear Monitor


500+ Head-Fier
Simgot EA1000 "Fermat" - When music hugs technique
Pros: - Resolution, detail retrieval, soundstage depth and imaging, along with very good end-to-end extension
- Vivid, energetic true to life and tonally on point vocals
- The swappable filters are the icing on the cake to fine-tune
- Premium build quality
- Very comfortable fit
- The LC7 cable is great but it’s not included in the price and has to be bought separately (it’s still a ~70$)
Cons: - Bass textures could be better, male vocals could use a bit more warmth and the upper midrange might not be for everyone
- The glass on the faceplates is more delicate than metal or resin
- No option to buy the 2,5mm or 4,4mm version
- The stock tips don’t provide variety as the included sets are identical
- Including the LC7 cable as stock cable would be a true killer package


2023 was the year in which Simgot really showed everyone what they’re capable of.
The EW200 and the EA500 were basically among the most (if not the most) appreciated and discussed IEMs in the chi-fi market.
The EA1000 “Fermat”, featuring a 1DD+1PR configuration and swappable nozzles (with different tunings) are among their latest releases and have already received lots of endorsements from reviewers and customers, so I was very interested in trying them. And here I am, with a pair of EA1000 and ready to share my impressions with everyone.

Disclaimer: the Simgot EA1000 Fermat were sent to me by Simgot free of charge so that I could write an honest review. This review represents my personal opinion on the set and it is by no means a promotional or paid content.
At the time of the review, the Simgot EA1000 Fermat were on sale at for 219$.
The LC7 cable, instead, is available at
Linsoul for 69,99$.


Technical Specifications​

  • Driver Configuration → 1 x 10mm DD + 1 x PR (Passive Radiator)
  • Impedance → 16 Ω
  • Sensitivity → 127 dB/mW
  • Effective Frequency Response Range → 20Hz-20kHz
  • Cable → 1,20m Litz structure high-purity OFC silver plated cable with 0.78mm 2-PIN connectors
  • Plug Type → straight gold plated 3.5mm jack connector


The unboxing experience is pleasant for sure, even though the packaging has a sort of “glossy” texture that makes it a fingerprint magnet.
Everything in the box is properly positioned, the accessories are in separate small cardboard boxes and everything appears in a pleasant way, so one can easily tell that Simgot cares about how the product is presented to the customer.
This is what you’ll find in the box:
  • The Simgot EA1000 Fermat (from now on “EA1000” or only “Fermat”)
  • Two identical sets consisting in 3 eartips each (S, M, L), even though it makes no sense to include two sets of the same eartips
  • Three pairs of different nozzles (of which one is already mounted on the EA1000)
  • Some spare o-rings to mount the nozzles on the shells
  • The detachable 3.5mm cable with 0.78mm 2-PIN connectors
  • A gorgeous carry case
  • User manuals and a “Fermat gold card” (which is a very funny idea)

Look at the third photo: the packaging really looks a funny face. Hopefully Simgot did that on purpose :beyersmile:

Design and Build Quality​

The EA1000 recall Simgot’s house design with a simple yet captivating faceplate design: the Simgot logo is centered on a white background (yet painted with some minimal and very subtle decorations), underneath a solid transparent glass layer, and everything is framed by a golden outline.

The all-metal body of the earpieces make up for a very premium feeling and (hopefully) a very durable set, even though this comes at a cost: being a fingerprint magnet and being heavier than the average resin or plastic shell (pros and cons, I’d say).
As you can see from the photos, and as seen from the packaging, the nozzle filters are swappable and they easily screw in and out with no issues.


In the inner side of the shell we find the passive radiator vent (easy to spot also thanks to its golden grill) underneath the L and R side indication, along with two pinhole vents that prevent pressure buildup issues, whereas the sides are free from any other holes.



The stock cable is good to very good. It looks and feels solid, it sports a chin slider and it’s not prone to tangling. I gotta say I have seen some IEMs in these price brackets that come with worse but there are also IEMs sold for less that come with even better cables. The fact that Simgot provided a good cable in the box should not surprise since we’re talking about a pair of IEMs that sell for around 200$, but at the same time I feel an extra-effort could have been done.
Unfortunately, there’s no way to get a pair of EA1000 with 2.5mm or 4.4mm cable, which is a missed opportunity imho.


In that regard, Simgot also sent me one of their aftermarket cables, the LC7, in order to pair it with the EA1000. It’s hard not to love it: it’s thick, it doesn’t tangle, it looks and feels amazing and it also comes with a 3.5mm to 4.4 mm balanced adapter so that one can also use the IEMs out of a balanced output. It’s not really cheap, since it’s almost 70$, but if you are willing to get an aftermarket cable, here you have one (an amazing one, too), even though I think Simgot could include it with the EA1000 for some promos here and there.


Comfort and Isolation​

The Simgot EA1000 are comfortable, particularly with slightly stiffer and longer tips since they don’t have very long nozzles. The stock tips didn’t meet my expectations considering the price, especially because they didn’t provide me with a good seal leading to an inconsistent listening experience. Not only that, the two sets of stock tips are identical, and it makes no sense since it would have been way better to provide two sets of tips with different nozzle diameters or different materials.
I ended up using a pair of KBEAR 07 tips, which are the ones I’ve used to write the review (not because I didn’t like the sound from the stock tips, but because I really couldn’t find a proper and stable seal) and the EA1000 became extremely comfortable for long sessions, also thanks to the fact that the shells don’t have any sharp edge or protruding wing.
When it comes to isolation, I think the EA1000 can do the job on most occasions, but I don’t think this is an IEM to use in very crowded environments.


  • DAC: Topping E30
  • AMP: Topping L30, Fiio A3
  • Mobile phones: Samsung Galaxy S7 Edge, Xiaomi Mi A3, Samsung Galaxy S23 Ultra
  • Moondrop May’s DSP cable with PEQ=0
  • Dongle: Apple Type-C dongle, Truthear SHIO
  • Portable DAPs: Benjie S8/AGPTEK M30B
  • Other sources: Presonus AudioBox iONE, Elgato Wave XLR, KZ AZ10
Do they need an amplifier?
The Simgot EA1000 don’t need an amplifier because of their low impedance and their high sensitivity. This means they are very efficient, but on the other hand it also translates in some small hiss when plugged to sources with higher impedance.
I think driver efficiency is very important when it comes to IEMs and I really appreciate the fact that I can use these without always carrying a portable amp with me.

Sound signature
The Simgot EA1000 have three slightly different tunings depending on the nozzle that’s mounted on the IEMs (even though everything lays around the Harman Target).
The Golden nozzle has more upper midrange and slightly less sub-bass compared to the stock red o-ring filter, whereas the black o-ring filter takes this upper-midrange and treble focus a bit further while giving some more sub-bass.
Overall, already mounted red o-ring nozzle has slightly better note weight and seems like the warmer and more bass-focused nozzle compared to the others, this also because the others have more upper midrange and treble.

For this review, I am gonna use the silver nozzle with the black o-ring as it’s the one that strikes a good balance between the other filters.

The sub-bass has very good extension and incredible control, and it’s a very satisfying experience listening to very deep sub-bass sounds with the EA1000.
The bass is impactful, deep, punchy and even though not the most textured around it sounds very natural and doesn’t leak into the midrange.
What amazes me is the outstanding quality of the bass and how clean it sounds: the EA1000 truly mastered bass reproduction, period.

The mids are neutral with both male and female vocals sounding very good. Particularly, the female vocals are intoxicating, with a lot of energy and intimacy that really make them shine. In some occasions, there is some episode in which the “S” sound become borderline hot, not to the point of becoming annoyingly sibilant but this isn’t a set for those who don’t like some upper-midrange energy, especially because they EA1000 really rule in this region.
Male vocals sound very good too even though slightly more laidback than female vocals ald could be just a tad warmer, even though they are never overshadowed by the bass thanks to excellent low-end control.
Instruments sound very natural, with layering and separation being helped by a good treble extension that provides for a lot of space in which they are precisely distinguished from each other.

The highs have a lot of details, it’s easy to spot small nuances and the perceived resolution is among the best I have tried. The treble extension is very good overall: there’s a lot of air and sparkle and this leads to a very “open” feeling while still retaining the naturalness one expects from IEMs in this price range, avoiding every kind of harshness one could think about.
For sure, those who are treble sensitive should probably look elsewhere, especially if we consider the EA1000 with the golden and black nozzle (even though the red o-ring nozzle still has some added treble that may bother the most sensitive ones out there).

Soundstage is expansive with nice width a surprisingly good depth, even though height is average.
Imaging is very good with instruments being portrayed right were they should be with high precision.

Some comparisons (EA1000 with black o-ring silver filter):

Simgot EA1000 vs Hidizs MP145 (Rose Gold/Balanced filter)​

The MP145 were among the most hyped IEMs of 2023, thanks to their very nice technical chops along with the versatility of the swappable nozzles (just like the EA1000).
Overall, the MP145 are bassier and warmer with less upper mids and less treble extension, whereas the EA1000 are more focused on vocals and resolution.
From a tone/timbre perspective, the EA1000 sound more open and natural, while the MP145 sound a bit more closed-in with more warmth and intimacy. From a technical standpoint, instead, the EA1000 outperform the MP145 with better detail retrieval, imaging and separation, even though MP145’s soundstage feels a bit more “cavernous”.
The build quality is great on both sets, but the EA1000 look more “premium”. The stock cable is of similar quality. Comfort-wise, the EA1000 win hands down as the MP145 are very bulky and may not suit smaller ears. Isolation is slightly better with the MP145 in the ears. If there’s one more think that needs to be pointed out is that the MP145 come with a better set of tips, since the EA1000 come with two set of tips that are actually identical and don’t provide variety.

Simgot EA1000 vs KBEAR Believe​

There aren’t many things to say: the EA1000 win hands down.
The Believe really surprised the market some years ago with their outstanding DD quality, but time and further development of the Chi-Fi industry killed them. The EA1000 win in everything: from sub-bass to upper treble extension, the EA1000 outperform the Believe in every part of the frequency spectrum, and they do that with no mercy.
The driver is also more efficient, they are built slightly better and look way more premium, and the overall resolution is ages ahead.
The only thing in which the KBEAR does better is the variety of tips they come with, but they are inferior at everything else.

Simgot EA1000 vs Celest Phoenixcall
The EA1000 are more resolving, more detailed, and also have much better bass quality than the Phoenixcall. The Phoenixcall are tuned in a more “unique” way, with a stronger midrange recession and more elevated low-end, while the EA1000 follow the Harman target and they’re also more versatile thanks to the tuning filters. Vocals sound more natural, intimate and detailed on the EA1000, whereas they can sound slightly unnatural on the Phoenixcall due to their midrange recession.
The soundstage width is comparable but the EA1000 play in a deeper and slightly taller stage.
Build quality is great on both sets, even though they are built of different materials. Design-wise, it’s a matter of personal preferences, but the Phoenixcall look more unique and captivating. Comfort is great on both sets, but the Phoenixcall tend to fit like a custom IEM and provide for a much better isolation from external noises. Both IEMs come with great stock cables, but the Phoenixcall are also shipped with a wider selection of tips that could help with tip rolling.

Simgot EA1000 vs Simgot EM6L
It’s very easy to distinguish them and to guess what’s the more expensive set. The EM6L are warmer with much more sub-bass and less treble extension, leading to an overall more closed-in, more laidback and more relaxed signature. The EA1000, on the other hand, sound more engaging, more detailed, more resolving, with more forward vocals and brighter treble region. The low-end quality differences really draw the line between the EM6L and the EA1000, since the difference in bass quality and control is night and day: while the EM6L sometimes lose bass control, the EA1000 never let the bass leaking in the midrange, providing for a super clean transition from the lows to the mids. The soundstage is more expansive on the EA1000, with slightly better width and height even though depth is what really stands out on the EA1000. Imaging is good on both sets but the EA1000 are even more precise.
Both are very comfortable and well built but the EA1000 look more premium. The EA1000 come with a better cable and a better set of stock tips. Isolation is slightly better with the EM6L in the ears.

Final Thoughts​

The EA1000 are outstanding: they are engaging, resolving, accurate, detailed, with a high quality and controlled low-end and great end to end extension.
It’s really hard to find weakness in the EA1000, expect for the improvable bass textures and the upper midrange glare with the golden and black-oring filter that could make some “S” sound very hot (they don’t become sibilance but the extra energy may bother some).

It was a very difficult review, especially because everytime I put them in my ears I didn’t want to write. It’s very difficult to sit and start describing sound when you start moving your feet and shaking your head, driven by the dynamism and musicality of this single DD IEM.
I am very happy for Simgot: it has been a great year for them and they released true bargains in the Chi-Fi industry: although I don’t know what’s coming next (except for their newly presented EA500LM, which hopefully I’ll be to try), I am sure they have the potential to set new benchmarks in this 2024.
David Haworth
Fantastic review. Well done!
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David Haworth

Previously known as J Weiner
Simgot EA1000. The Goldilocks IEM.
Pros: Detailed, refined, organic sound.
Dynamic fast bass with great texture.
Fantastic detail retrieval
Airy vocals with expansive soundstage
Comfortable fit.
Tuning nozzles for flexibility
Cons: Balanced bass response not for bassheads
EA1000 4.jpg

Simgot was kind enough to send in the EA1000 for review, as part of an Australian audio review tour, I wasn't paid for the review, any opinions, thoughts are my own.
EA1000 1.jpg

Design musings

Development of in ear monitors is accelerating as manufacturers compete for best in class. Single Dynamic driver IEMs would seem to be the most basic design, with products on the market for less than $20. And yet Simgot is selling the EA1000 at $220.

The reason is they have taken the design and developed it to the Nth degree. I don’t pretend to understand what sputter deposition purple-Gold diaphragm technology or dual magnetic and dual chamber technology means. I have an inkling of what Passive radiator technology is designed to do but I will leave others to explain that. What I understand is the sonic results of all this development.
EA1000 2.jpg

Equipment used to test.

I used my Hiby R3 Saber 2022 DAP with a NiceCHK 2.5mm balanced cable and TRN T ear tips. Listening to my music collection of FLAC files. I get a nice deep seal with these tips.

A note on fit and comfort. In size the EA1000 is similar to the Simgot EW200 with a similar metal body. But for some reason the 1000 fits deeper in my ear canal to the point where the IEM almost seems to sit flush. Everyone’s ears are different, but we have a bit of synergy going on here.
EA1000 5.jpg


I use the DAP set to high gain and when driving 7Hertz Legato or Hidizs MP145 I use a volume setting of 45 (sometimes a little higher) . With the Simgot a volume setting of 35 gives me equivalent sound pressure and boosting to 40 I find unnecessary and no advantage.
EA1000 6.jpg

The Sound

This IEM impresses from the word go. Its tone is rich and tends to the warm side. The bass is fast, deep and well textured, allowing rumble and thump when required and never intruding on the midrange. Vocals have a forward placement with natural timbre and an intimate expressiveness. Vocal lovers will enjoy the EA1000. Singers have room to move in an expansive space with great left to right width and enough height and depth to create an immersive soundscape.

One of its great strengths is handling complex compositions. Instrument separation is first rate as is detail retrieval. The EA1000 never gets flustered or congested. Each element of a song is audible as recorded and the sound is coherent and compelling. Songs breathe!

Treble details are refined, airy and extended, never too hot or overbearing. Indeed, the cohesive tuning of this IEM is its big strength. And above all its is a MUSICAL IEM.

EA1000 7.jpg


I titled this review. The Goldilocks IEM

If you don’t know the children’s fable, it’s a story about porridge and a little girl who eats the three bears porridge. Daddy bears porridge was too hot, Mumma bears porridge was too cold but baby bears porridge was just right! The Goldilocks zone!

The Simgot EA1000 presents each aspect of the audio spectrum as “just right” to my ears and I’ll be saving to get my own set. Highly recommended.
Wonderful review. After reading all the reviews below...I finally went for it. This thing is incredible. My preference is typically a little more weight in the lower bass region. A slight elevation in the sub bass makes this IEM perfect. The rest of the frequency spectrum is presented flawlessly. Timber is insanely accurate. Just extends high enough in the upper frequencies to bring out the details.'s the important dilly'O for me, (sorry had to say that) from my recorded LP's to FLAC all the way to regular FLAC files...they sound awesome. Im my opinion, these are good enough to skip the 300-600 range of IEM's and go directly to the 1K (bold statement I know..don't kill me...WOOT!) Cheers


New Head-Fier
A New Champion Has Risen! The SIMGOT EA10000 "Fermat"
Pros: 1. Excellent airy and detailed treble
2. Fuller and richer mid range
3. Realistic bass response
4. Best in terms of technical prowess
5. Natural timbre
Cons: 1. Rare occurance of'SS' sounds
2. Too energising for some.

Review OF The Simgot EA1000



SIMGOT has never launched an IEM that was not highly accepted or commended sufficiently for their sound quality for the price they're being offered, whether it be the EA500, EM6L, or any other of their high end or budget IEMs. One of the earliest businesses in the audiophile sector is reputed to be this Chinese enterprise. They were formerly well-known for their EN series, but they have recently resurfaced and launched a few IEMs that audiophiles like me have found to be rather pleasing. I have been interested in this company ever since I heard about their EN series, and since then, I have grown to love their products and the technology they actually uncover with perseverance, hard work, and dedication. Other than SIMGOT, I don't believe I have ever seen a company that is as open about the creation and application of their technology in their goods, which makes sense. It has taken some time, but I was fortunate enough to obtain their most recent model, the EA1000, which is a younger sibling of the EA2000 that has the same technology. I would like to make a few clarifications before sharing my actual findings.



*Since this unit tour was organised by the generous people at SIMGOT, I am grateful to them. And as I've said in all of my evaluations, the same is true for this one: all of the concepts I've expressed below are entirely my own, original ideas that haven't been influenced by anyone else. If interested, go to this link.
*I am not associated with the connection, and I receive no financial assistance from anyone.
*For the remainder of the review, I will refer to these IEMs as “EA1000.”
*I am using different Ear-tips for convenience and better versatility.
*Finally, I will only evaluate the EA1000 based on their performance, even though I will explain how it feels and seems physically and aesthetically.


The dynamic driver of the EA1000 is a 10mm driver with a multilayer sputter-deposition purple-gold diaphragm and a 6mm passive radiator. This configuration is unique to the EA1000. Using the previously mentioned SDPGD technology, the dynamic driver is essentially a second generation dual magnet and dual cavity driver. Its older brother, the EA2000, has the same configuration. Compared to comparable metal-made IEMs, the shells made of premium alloy metal that has been CNC etched feel more robustly constructed. The SIMGOT brand emblem is centered over a white background in a stunning pattern on the faceplate. The eartips allow for an isolated fit, thus the shells' comfort and fit let you to listen for hours on end without experiencing any pain or weariness. The included cable has a higher texture quality and feel than the one that comes with the EA500. The cable contains a 3.5mm straight termination plug on one end and a two pin connection on the other. Three different tuning nozzles, a carrying case, six pairs of eartips in varying sizes, and a variety of red and black rings for tuning nozzles are among the additional accessories that come with the IEM. Regarding the technical details, the sensitivity is 127dB and the impedance is 16 Ohms. There is a 20Hz–20kHz effective frequency response.



The EA1000 exhibits a common sound profile with vibrant, well-detailed, and resolved notes presented with the most precise note presentation I have ever heard from a single DD, yet it leans toward three distinct tunings. Although I am aware that there are passive radiators that help with the notes' natural reproduction and dynamic quality, I still think the dynamic driver is the most amazing. As I indicated, there are three distinct tunings that may be accomplished with three distinct tuning nozzles, enabling the tuning of two in-house targets as well as a 2019 harman target. For my part, I don't see any appreciable differences between the harman and their golden 2023 target—discussed later. Coming to the sound, I am using the standard tuning nozzles (black ringed nozzle) which they came with for more intricate findings. Regarding the sound, for more complex discoveries, I am utilizing the standard tuning nozzles (black ringed nozzles) that were included.The vocals and instruments from the lower mid range to the upper frequencies have a very vibrant and clear response that comes across as joyful and detailed, while the treble sounds pleasantly expansive, airy, and non-fatiguing.The bass feels accurate, slamming, and banging because to the excellent PR that was employed.Even though this is my first IEM to use a dynamic driver and a decent passive radiator, the tuning and sound quality really amazed me. It still amazes me that a single DD can produce a presentation with such forward-thinking, natural sounding quality and exceptional technical ability. Let's examine the sound presentation in more detail.



I believe the frequency graph is not accurately depicting the situation because my perception of the response is different from what the graph indicates. If this is not the case, I will trust my instincts first. The problem is that I hear no issues at all. By this I mean that the reaction is deliberate, thorough, and astonishingly brilliant, and I don't have any problems with peak sound or sibilance.I think the singers and instruments sound richer and fuller because of the high treble's wonderful airy extension.Please bear in mind that I am discussing an IEM that costs less than $250 USD. The notes are precise and accurate, but they don't sound piercing in my opinion—rather sophisticated. The singers and instruments are more prominent in the lower treble, which adds additional energy without pushing forward too much to cause a peaky or shouty reaction. The lower treble sounds just as clear and detailed as the upper treble. The instruments and vocals are more prominent but still under control, preventing any metallic tones from being heard. Even when I compare the treble response of the SIMGOT to other IEMs around the EA1000, such as the quintet or Falcon Ultra, I believe that generally, the SIMGOT did the best job of finding the ideal balance between sounding as natural as possible and without being offensive.The quintet, in contrast to the Falcon Ultra, sounds more forward-thinking and aggressively detailed, whilst the latter lacks sharpness. The HYPE2, which likewise generates a smooth response with details that are similar to the EA1000, is the only IEM that I have seen that comes close. As a result, the treble area is presented in an expansive, intricate, and airy manner overall.

Mid Range

In terms of tone and timbre, the mid range is where the response sounds the greatest; in my opinion, these are the best IEMs under $500–$800. Though I do believe that the placement of the vocals and instruments plays a significant role, I still think it is a great achievement that SIMGOT brought this IEM to produce such a lively response that makes the natural and forward response sound fuller, richer, and detailed at the same time. Many brands haven't come close to this level of performance. My observations stem from the singers' remarkable dynamic leaping throughout the response, which sounds multifaceted and simultaneously detailed, richer, fuller, and unique. When compared to the lower treble, the upper mid range adds more energy to the mix and permits greater clarity. The vocal and instrument tones sound well-balanced, with the instruments complementing the vocals while adding a charming presence when necessary to be more prominent in the mix without overpowering the vocals. The vocals are quite enjoyable to listen to, keeping you on the edge of your seat as they spread out far and wide. makes the temperamental shifts in the mix sound more full.To put it simply, I think the vocals sound the best of all of them. Yet, it doesn't sound as rich or velvety at the same time. When vocally prominent tracks are heard, the vocals occasionally bring out a little "ss." This doesn't bother me too much, but I still feel like I should mention it because the vocals sound more open and lighter. In addition to sounding clean, the lower mid range has good note weight and depth. Similar to how the vocals end on a clear and distinct note, the guitar's bass notes seem slightly thick but not overly dense. I would try the quintet or HYPE2 if I were looking for a more composed answer with fewer inflamed vocals. In my opinion, the Ultra has less open-sounding vocals than the EA1000 and sounds more weighted and real. Overall, the mid range is presented in a more rich, vibrant, and melodic manner.


Getting to the bass The passive radiator, in my opinion, aids in achieving the bass's detailed and organic response, which also permits a quick attack and natural note decay, providing a realistic response. The bass is one that doesn't allow for additional prominence in the mix. The quality is sufficient to give the entire response a more sophisticated and grown-up tone. The emphasis is on the sub bass area, which extends nicely enough to provide punches and a deep rumble that aids in delivering notes with impact. Despite this, the rumble seems to be modest and constricted within the ear canal. The well-controlled mid bass produces a meatier presence, enabling both gentle hitting slams and clean, pounding bass. The response reproduces the notes' naturalness, hitting with just the appropriate amount of intensity and weight and resolving at a speed that feels authentic while still taking into account the higher frequency areas. Although the bass is not the highlight of the entire response, it is nonetheless underappreciated since it nails the live stage presentation rather than the concert one. In my opinion, the HYPE2 has a more powerful and thunderous sound than the other model, which sounds more organic and natural overall and amplifies the sound of the bass notes on a large stage. The bass on the EA1000 sounds more textured and sophisticated, even though the quintet sounds smoother and warmer in this aspect than the EA1000. The bass is similar to the Falcon Ultras, however less detailed and textured than the EA1000, in my opinion. In the end, I think there is enough bass response to make the reaction seem lively and enjoyable. As a result, the bass area is presented in a compelling, realistic, and fulfilling way overall.

Technical Performance

In technical terms, IEMs in this price range sound better on average. Quintet, for instance, has a nicely detailed response with good separation and resolution, but it still lacks sharp imaging. I suppose this is because it introduced sibilance or shouty response. However, after hearing about so many IEMs that were unable to achieve what I believed, all of my concerns were allayed by the EA1000, which exceeded my expectations. Let's get specific.


Soundstage, Sound Imaging & Separation

The stage is rather large and spread out, which contributes to the surround sound rather than a stereo sound. The depth and height feel significantly better than any other IEMs, though they are similar to HYPE2. The imaging is where the EA1000 excels, as I find it to produce a sharper and clearer response than any other IEM I have mentioned. The notes' separation helps me identify the source of the music because it sounds distinct and far away without being overly dispersed.

Speed & Resolution

Although the resolution is superb, I think the quintet to be somewhat superior in that aspect. However, the EA1000 sounds extremely expressive in terms of both micro and macro aspects. The notes have a quick attack and fade, and the resolvability seems to time as closely to sounding pleasant and natural as possible.

Sound Impressions

Tuning Nozzles


Red Ringed Nozzle - As opposed to the black nozzles, the only complaint I had with the EA1000 was that the "ss" sound was muted, which resulted in a more balanced sound with more male vocal presence and less intensity from the female vocals.Apart from this, I don't see any discernible changes.

Gold Nozzle - The response sounded a little more weighted and the notes sounded denser when compared to the other two tuning nozzles. This helped the vocals sound a little more grounded and beautifully presented, especially the female vocals, but the spark that usually gave the vocals an exciting touch that kept me on edge was gone. However, nothing seems updated or different—only the note weight and density are highlighted. However, I do occasionally think the treble seems a little muted.


Sony WM1A - The response sounded larger and more expansive with a more dynamic response when listening to the EA1000 with WM1A. The vocals, especially the female vocals, seemed a little shouty, even if the notes were more rounded. This was probably around the 2-4k range. However, the bass was louder and more thumping. The calmed energy overall, particularly in the treble region, was the only other discernible difference aside from this.


Tempotec V6 - The response was smoother and cleaner while listening to the EA1000 through the V6, but it also sounded more intimate and lively. The energy was regulated because it prevented any focus from being heard in the mix. The details were as they were, but because they weren't as obvious, they were less noticeable. While the voices sounded less open and separated, allowing the response to sound more relaxed, the bass felt more in control and linear.


Tracks Used

Luna Haruna - Glory days
Luna Haruna - Overfly
Rokudenashi - The Flame of Love
LMYK - 0 (zero)
Marina Horiuchi - Mizukagami no Sekai
Indila - Love Story
Indila - Tourner dans le vide
Earth, Wind & Fire - September
Tom Petty - Free Fallin'
Fleetwood Mac - Everywhere
Nirvana - Smells Like Teen Spirit
Blue Oyester Cult - (Don't Fear) The Reaper
Guns 'N' Roses - Sweet Child O' Mine
The Police - Every Breath You Take
Gojira - Amazonia
TV on the radio - Wolf Like Me
Bring Me To The Horizon - Can You Feel My Heart
Bring Me To The Horizon - sTraNgeRs
Avril Lavigne - Dare To Love Me
Travis - Love Will Come Through
Gotye - Somebody That I Used To Know
DJ Shadows - Six Days (Remix) [feat. Mos Def]
Lady Gaga - Just Dance
Lil Wayne - Lollipop
Flo Rida - Low
Sebastian Lopez & Flug - Electronic Measures
Federico Mecozzi - Blue (Da Ba Dee)
Wayve - Not Enough
Kai Wachi & TeZATalks - Ghost
NGHTMRE, Zeds Dead & Tori Levett - Shady Intentions
Zeds Dead, DNMO & GG Magree - Save My Grave
Skrillex, Noisia, josh pan & Dylan Brady - Supersonic
Skrillex & Nai Barghouti - Xena
Skrillex, Missy Elliott & Mr. Oizo - RATATA
Kaifi Khalil, Eva B & Wahab Bugti - Kana Yaari
A.R. Rahman, Javed Ali & Mohit Chauhan - Kun Faya Kun


To sum up this review, the EA1000 far exceeded my expectations and lived up to the fanfare that audiophiles had for it. Nothing stands out as being particularly incorrect or distinctive from what any audiophile would find pleasing at first hearing. Its opulent feel and sound profile make it the ideal IEM for around $500. Vocal aficionados would adore the EA1000 for its deep and satisfying response that captivates your listening style. I wholeheartedly suggest it because of the response, which sounds as close to a faithful response as possible. Investing $1,000 USD is not necessary to experience TOTL level sound quality; the EA1000 will do the trick.

Pretty spot on everything, thanks for the accurate and concise review.


500+ Head-Fier
SIMGOT EA1000 FERMAT: Paradigm Shift
Pros: ● Solid aluminium alloy shell chassis with a glass-like surface on its faceplate.
● Detachable tuning nozzle filters for sonic preference choices.
● It offers an excellent fitting and passive noise isolation.
● Satisfactory amount of inclusions.
● Easy to amplify
● A quite likeable tuning for a Harman-ish type of sound profile.
● Solid and precise yet clean bass response.
● Clean, transparent and energetic midrange.
● Excellent for tracking on female vocals, strings and woodwinds.
● Bright and adequately airy treble response.
● Remarkable separation and layering for a dynamic driver IEM with passive radiator.
● Exceptional resolution capability for a dynamic driver set.
Cons: ● Wishing for modular cable.
● Some male vocals sound a bit lean and less texture in my liking.
● Since this set has a mirror-finish surface on its shell chassis, constant wiping it off is a must.
● A wider sound/speaker stage would be better.
● If you are tired of Harman tuning sets, this set isn't for you then as it still aligns with that particular target curve.

“I will share all of this with you whenever you wish.”

~~Pierre de Fermat, French mathematician and proponent of Fermat's Theorem.

Pierre de Fermat was a mathematician and lawyer in 17th century France, he was the one who formulated a number theory called Fermat's Theorem and law of refraction on light rays named Fermat's Principle. His other contributions to the field of mathematics and physics are probability, expanding the application of Cartesian geometry and optical applications.

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The SIMGOT revolution is still going strong up to the present on how it dictated last year's portable audio scene as it presents some of the best products that many audio enthusiasts are willing to accept. The EA500 is the testament that you will get an excellent set with good tonal and technical performance at entry-level pricing. And now what I have here is their latest offering at over $200/£160 segment.


This is SIMGOT EA1000 Fermat, it's a single dynamic driver with passive radiator as its supporting implementation. SIMGOT already did implement this configuration before on their EA2000 which is a midrange set. The EA1000 uses the latest generation of dual chambered, dual magnetic dynamic driver with newly-developed composite materials of its diaphragm made of SDPGDT (sputter deposition purple gold diaphragm technology) which is more rigid and better elasticity to deliver a more responsive and deeper bass response along with improved dynamic range and shimmering and crisper high frequencies. The 6mm passive radiator will enhance deeper pitch and darker tone due to better stimulation on resonance effect as it traps those sound pressures.


The drivers were in a solid aluminium alloy with a detachable tuning nozzle as SIMGOT offers three distinctive tuning. The surface of the cavity base shell of this set has a mirror finished surface while its faceplate was laminated with glass-like material to give that classy and elegant look. There are two vent holes in the cavity base part that allows it to escape some excessive air pressure generated from its high-performance dynamic driver. SIMGOT continues to use a proven interlocking mechanism on this set which is a standard 2-pin connector.


The stock cable of the SIMGOT EA1000 is of a high quality as it is a 2-core Litz OFC silver-plated copper that will assuredly deliver an unadulterated audio signal without any distortion and interference that will affect the sound quality. The termination plug is a gold-plated 3.5mm SE to ensure better conductivity and improvements of its corrosion resistance.


As for fitting and comfort, despite that this set shell chassis was made of solid metal alloy, it really rests well into my lugholes without any discomfort or wear fatigue. The passive noise isolation is excellent as it was able to block some noises from the outside due to good sealing.


The product presentation of SIMGOT EA1000 is quite impressive as it gives us some of the best unboxing experience and how the contents and accessories are well-organised inside.



Here are the following contents that were included inside the box:

  • Pair of SIMGOT EA1000 Fermat
  • Stock cable
  • 3 pairs of vocal silicone ear tips in different standard sizes.
  • 3 pairs of balanced silicone ear tips in different standard sizes.
  • IEM storage case.
  • extra 2 sets of tuning filter nozzles.
  • Spare filter rings
  • Paperwork like user's manual and warranty card.

Power scaling and amplification-wise, with an impedance rating of 16Ω and sensitivity of 124dB, SIMGOT EA1000 is indeed an easy to drive that even a smartphone or tablet with decent power output will be able to amplify it properly. With a decent power output, it utilises a full and dynamic sound that this set is capable of.


To determine its tonality, since it has a detachable tuning filters nozzle, it offers a variety of U-shaped sound profiles that usually aligns with Harman-style of tuning with some deviations.


(Graph was provided by @baskingshark , credits to him)

Silver nozzle with red ring is more of a typical Harman target curve that we accustomed with, while the silver nozzle with black ring is SIMGOT's in-house tuning which is a based of a modified Harman target curve and then on golden copper nozzle with white ring is SIMGOT's latest in-house tuning that somehow rectifies some shortcomings of those tuning target curves to sound more balanced and engaging.



The bass response of this set is quite well balanced on both sub-bass and then mid-bass given my aversion and criticism in most Harman-style of tuning. While it has good sub-bass presence as I discerningly get its rumble and reverberations from instruments like low tone bass guitars, synthesisers and drum machines, the mid-bass is quite well-bodied on its texture as it delivers a slam, authority and punchy lows which might attribute due to the implementation of passive radiator to give a deeper and darker tone.

Bass guitars sound more sombre and resonant while bass kick drums have eerily and thudding sound, and then on male vocals, bass-baritones seems to projects a decently woolly and dusky vocals but still not deepest nor the darkest tone that I really want but for Harman-type bass response, this is quite satisfactory to my ears.


The midrange presentation of the EA1000 are quite recessed in the overall frequency range but it has clean, transparent and energetic sound that will be more oriented towards female vocals, strings and woodwinds.

Male vocals particularly on baritones and heldentenors appears to sound a bit lean in my liking as it loses some volume and depth as they sound a bit too smooth, less warm and lack of richness. Tenors have bright and dazzling sound as it is more beneficial to leggero and lyric-type tenors. On females vocals, contraltos apparently has lack of texture and finesse as they sound less hefty and less husky sound while the mezzo-sopranos have tender, golden and fiery sound, and then on sopranos, they quite sound very expressive and captivating as they sound shimmering and crystalline.

In regards to how instruments sound with their respective timbre and tonality, strings such as guitars have a crisp and bright sound and violins have lively and vibrant sound. Woodwind instruments like piccolos, concert flutes and clarinets have a brilliant, silvery and lively sound respectively. On brasses, trumpets have brilliant and penetrating sound, horns have clear and metallic sound and trombones have sinister and dramatic sound. As for percussions, snares have sharp and precise sound, tom-toms have resonant but a tad less warm sounding, field drums have hard and majestic sound and kettledrums have resonant and a bit dry sound from it. Pianos have a balanced to tad brighter tone that makes them sound emotive and exciting.


The treble response of this set is quite energetic and shimmering especially on silver coloured black ring nozzles and silver coloured red ring nozzles. The upper mids and presence part of the treble region are quite elevated on its overall tuning as it gives more definition on female vocals and sharper attacks of instruments. It is also noted that in some instances that some female vocals might sound a tad shrill and shouty but at least the sibilance was kept under control and harshness is barely minimal to none to be bothered with.

On crashing cymbals, it sounds bright and metallic while the hi-hats are a bit too bright with its distinctive buzzing and breathy timbre. Glockenspiels sound shimmering and brilliant, then on celestas, they have this particular “heavenly sound” as its sounds quite glistening and bright. It has a good sparkle and fairly airy treble response for a dynamic driver set with passive radiator.


As for its technical aspects, it appears that the EA1000 has an above average sound/speaker proportions, as it has above-average lateral span, just a decent height and reasonable depth as it is just give me a moderate size headroom as I've experience a more cavernous soundstage from other sets.

The stereo imaging gives me a concave-like soundscape where I can locate precisely the positioning of instruments and vocals in well-separated and well-arranged layers of dynamic and frequency tones from each element. To my surprise, this set is quite capable of handling some of the most complex, multi-instrumental tracks that I'm throwing out on this one.

Coherency of its drivers is quite excellent as it managed to deliver a fast transient response without any distortion or out of phase issues as it performs consistently. Resolution capabilities of this one is fairly competent as it has a good note texture on the macro-dynamics while it has sharp micro-detailing to extract some nuances and detail from an audio track.



● Probably one of the closest competitors in the market. While it only has a single dynamic driver, it was a beryllium-coated one and it has its own proprietary acoustic pressure technology to support its performance. Just like the EA1000, it has a detachable nozzle system and is also encased in a solid metal alloy chassis, although the OD200's stock cable is a modular one.

● As for tuning, since OD200 also has a detachable tuning nozzle just like EA1000, this set offers two types of tuning, a mild U-shaped sound and a warmer U/V-shaped. Bass quality and quantity on OD200 has more authority and impact but it has slight bleeding across the midrange (silver nozzle mode). Midrange is a tad more warmer and more textured on OD200 in silver nozzle mode that will be beneficial for male vocals, some percussives and mostly on brass section. The treble on both tuning modes on OD200 seems quite different but they all display a merely modest airy extension which makes the EA1000 have more refined treble response.

● Technicality-wise, they are quite comparable but in certain cases, OD200 has a less refined separation and layering aspect, then its micro-dynamics seems to be less detailed but at least, OD200 has a bit more solid macro-dynamics.


● A solid offering from DUNU and like the EA1000, it also has a metal chassis and a detachable nozzle tuning system but the difference was that it has only a single dynamic driver and it has their own airflow damping system to improve its dynamics and punchier and solid low frequency. It also has modular cable and offers a lot of types of ear tips to choose from. And also, unlike EA1000, this one has a MMCX-type of connector which is either love or hate.

● Regarding its sound profiles, since this also has detachable tuning nozzles it offers two distinctive tuning, a warmer U-shaped and a bit brighter U-shaped sound signatures. Bass response appears to have a consistent texture and preciseness while a bit lean yet transparent midrange on the blue nozzle while the gold nozzle has some warmth on it and then on treble, blue nozzle filters seem to have more sparkle and shimmer while the gold nozzle appears to have a more smoother and balanced sounding.

● As for technicalities, it has an above average sound/speaker stage but if I compare it closely to EA1000, it has a bit more height. Stereo imaging presents an almost 3D-like presentation within my headroom and it has a good separation and layering. On the resolution aspect, while it has solid macro-dynamics, I noticed its micro-detailing definition seems less sharp.


● This set is actually one of my most favourite single DD sets under $300 dollars. Like the EA1000, it has a solid metal shell chassis and uses a dual-chambered dynamic driver with CNT diaphragm. But it doesn't have a detachable nozzle tuning filters

● Oxygen has a mild U-shaped sound signature as it has presence of its sub-bass while it is a punchy and articulate mid-bass but compared to EA1000, it will sound a bit less texture. Midrange is well-balanced with clean, energetic and good clarity to give more emotive and expressiveness on vocals and strings instruments. Treble has a good sheen on it with sufficient brightness and has a good airy extension for a single DD set.

● Technicalities-wise, this is not the strongest aspect of the Oxygen as it has an average to above average sound/speaker stage and a more intimate stereo imaging. On separation and layering, if I compare it to EA1000, the Oxygen shows its age that it has less defined layering capability but still it has quite satisfactory capabilities on separation of instruments. On resolution capabilities, it has solid macro-dynamics and good detail retrieval but compared to EA1000, it has less sharper definition.

As I conclude my review about SIMGOT EA1000, This one truly reckons the current state of the IEM segment in under $300/£235 on how this set performs well. The performance of its high dynamic driver along with its well-implemented passive radiator truly defines the tonal and technical performance of this set that will probably change the dynamics of IEM game in the current portable audio market. If you want to experience a prelude to the Mid-Fi/midrange level of sound quality, this set is probably one of them.

The SIMGOT Revolution keeps going on and will continue to strengthen its grip in the IEM market.

SIMGOT EA1000 Fermat is currently available in SIMGOT official online store, LINSOUL and PENON. All links provided below are guaranteed non-affiliate ones.






PLUG TYPE: 3.5mm

Some Tracks Tested: ( * = 16-bit FLAC, ** = 24-bit FLAC, *'* = MQA, '*' = DSD, *'= .WAV)

Alison Krauss -When You Say Nothing At All *
Jade Wiedlin - Blue Kiss**
Led Zeppelin - When The Levee Breaks **
Mountain - Mississippi Queen *
Queen - Killer Queen **
Guns N' Roses - Patience *'*
Eric Clapton - Tears in Heaven '*'
Sergio Mendes- Never Gonna Let You Go '*'
Pearl Jam - Daughter **
Roselia - Hidamari Rhodonite *
Assassin - Fight (To Stop The Tyranny)*
Celtic Frost- Visual Aggression *
New Order - Blue Monday *
The Corrs- What Can I do (unplugged version) *
Jimi Hendrix Experience - Voodoo Child *
The Madness- Buggy Trousers *
Metallica - Motorbreath **
Mariah Carey- Always Be My Baby *
Destiny's Child - Say My Name *
Malice Mizer- Au Revoir *
Mozart - Lacrimosa *
New York Philharmonic Orchestra - Dvorak- Symphony 9 " From the New World." *
Eva Cassidy - Fields of Gold (Sting cover)*
Michael Jackson - Give In To Me *
Exciter - Violence and Force *
Diana Krall - Stop This World **
Debbie Gibson - Foolish Beat *'*
The Sisters of Mercy – Lucretia My Reflection**
Suzanne Vega – Luka **
Lauren Christy – Steep *
Ottoman Mehter - Hucum Marsi *
Diana Damrau - Mozart: Die Zauberflöte*
Type O Negative - Black No.1 *
Felix Ayo - Vivaldi: Presto **
Three Tenors - Nessum Dorma *
Mercyful Fate - Witches' Dance *


I am not affiliated to SIMGOT nor receive monetary incentives and financial gains as they provide me a review unit for an exchange of factual and sincere feedback from yours truly.

Once again, I would like to send my gratitude to FIA LAM of SIMGOT and Obed a.k.a @kesobie for letting me to join the SIMGOT review tour here in the Philippines. I truly appreciate their generosity and trust towards me and other reviewers.

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Between the EA1000, Falcon Ultra and OD200, which do you recommend more for listening to Metal (thinking about the crunch of the guitar, good vocal presence, prominent bass and fast kick drum)?
@GBCabral Falcon Ultra and OD200 will offer better on those genres.


500+ Head-Fier
Natural Exciting Dynamic, EA1000
Pros: Very Dynamic
Exciting and Fun Sound
Nice Base Impact
Powerful, Tangible sounding mids
Fantastic Vocals with good body
Cons: Bass texture and details can be limited
Details can be lost in complex songs
Can be a little bright and harsh in some song
Cable is only 3.5mm or 4.4mm
IEM is fingerpint magnet
Simgot EA1000 Fermet Review

Video Review

Natural Dynamic Exciting

The SImgot EA1000 is a Single Driver with Passive Radiator IEM priced at about $219usd during this write up. This is one of the most dynamic and exciting IEM I have heard while sacrificing little else.

Driver: 1 Dynamic Driver + 1 Passive Radiator
Sensitivity: 127db/Vrms
Impedance: 16ohm
Effective Frequency Response: 20hz to 20khz
Connector: 078mm 2pin

Tonality: 8/10
Technicality: 8.5/10
Enjoyment: 8/10
Build: 4/5
Comfort: 4/5

Total: 32.5/40


This is purchased by myself for usage and review.

This is a IEM that surprised me. I have owned dynamic IEMS and other Planar Large Driver IEMs. The dynamics and excitement for this IEM is truly special while still maintaining really good clarity, soundstage and tonality. Its bass may not go super low but you get a good punch in exchange while on the treble front, they can be quite sparkly or even approaching metallic but never too harsh with the right filter. Overall, this is a very enjoyable IEM that you should try out.


The Simgot EA1000 for me was an accidental last minute purchase. I was shopping around for some IEMs and happened to see this listed on my shopping application as new and upcoming. Doing a very quick search, it seems to be well received so I just got it to try. It truly is a worthy purchase.

Packaging and Build Quality:
The packaging came with 2 set of tips of different size, a case and 3 sets of filter. The default fitted one is the red filter. I will write more about filters in the sound section. Build quality wise, this is a really nice looking IEM, with a pure metal body and a clear surface. It gives off a really premium feel. The cable provided is a silver coated OFC cable. It feels good and sturdy. The cable is not those multi-adaptable types, only providing 3.5mm or 4.4mm, selectable on purchase. The cable is connected to the IEM via a 0.78mm 2 pin. One of the issue is here, the 2 pin socket is recessed into the IEM, this makes alternative cable or True Wireless System (TWS) connection tricky and loose.

This IEM is relatively heavy at about 11.2g per side. Many IEM of its size is lesser than 10g. The shape of the iem fits into the ear nicely. However as it does not have much of a shape, the ear canal and the hook are the main way this IEM is being held up. Its still a relatively comfortable IEM due to its small size and flat profile. Its profile is low enough that you can consider sleeping with them on.

The IEM does isolate a good amount but you still hear some sound around you though at very low volume.


Sound Quality

Songs used
Ultima (FF14 soundtrack)
The Witch from Mercury (The Witch from Mercury Soundtrack)
Suzume (Radwimps)
Shatter Me (Lindsey Stirling)
Unravel (ADO)
The Brave (Yoasobi)
Avid (Sawano Hiroyuki)
Comet (Ari Anjou)
Ibara (ADO)

The EA1000 comes with 3 filter. The Golden one is the more balanced one, with the red ringed having more treble and the blue ringed reduces the mid and lifts the subbass. I prefer the golden filter as the red was a little harsh to my ears in songs like Shatter Me and Ibara and the blue one just feels like the vocals became hollow and mids sucked out. Golden filter is the one I will use for this review of the sound quality.

Tonality and Dynamic
This is a general neutral sounding IEM with a slight emphasis on Mid Bass and Mids. Its signature is very dynamic sounding and generally exciting to listen to, especially in the frequencies that make a difference to the general listening experience.

Clarity and Detail
The clarity on this IEM is superb. Infact this is a standout feature as the overall signature was really clear without it being treble heavy, maintaining good body and bass with minimal harshness. Details are generally good though in complex music with a lot of frequency, some instruments may disappear as in the song ultima, there was this percussion instrument that suddenly just disappears.

This is a generally wide sounding IEM. It is significantly wider than the widely known truthear Zero:Red, wider than the recently reviewed Duno Talos. It is generally wide left and right with a little depth in-front. The sound is also quite open and airy sounding, which adds to the soundstage feel.

Separation and Position
Separation is really good for this IEM, each instrument can be easily heard in tracks like One WIng Angel, Witch from Mercury or Ultima, all of which are orchestra-like tracks with a lot of instruments. But do note, in really complex tracks that are loud, some softer instruments may disappear. Positioning is mainly left and right with approximate position. So even though it has a relatively good sound stage and separation, positioning is quite limited. In orchestra pieces like One Wing Angel, it's like there are only 5 positions: far left, left, mid right , far right.

Lows to me are very satisfying. I prefer a good amount of impact with sufficient sub basso that the bass sounds impactful yet not overdone. The EA1000 sounds exactly the way I want, with really nice clean impact while with sufficient subbass to feel and hear. The bass is also really clean, not leaking into the mids, giving it a very clean signature. The low does not have too much texture, with the bass sounding horns sounding more like a slightly smooth flat sound then the slight ripples it should have.

Mids are where this IEM is a standout. It's full bodied, accurate and exciting to listen to. Instruments like violins in Shatter me and Guitars in Unravel are well rendered. Vocals are smooth yet powerful to listen to, this makes songs from ADO a really great experience. Even with all that mids, it still has a good control with minimal harshness in the higher mids. Overall its a very enjoyable experience for vocals and mid instruments.

By default, the red filter was fitted on and it was really harsh sounding to me in songs like Shatter Me and Ibara. Once I swap to golden, the harshness is reduced and it makes the treble generally smooth. The treble does have a slightly more bright and sparkly sound, making bells and cymbals sound a touch over but not offensive. I do think this does add slightly to the overall clarity and excitement of the sound.


For amplification, better amplifier do help, but apple dongle is probably good enough. Do watch my video review for more details.

The Simgot EA1000 is a really fun earphone to listen to. It maintains a relatively neutral and accurate tone while being highly dynamic and exciting. Its price is not exactly the cheapest, but to me, it sounds way better than the entry IEMs and the tuning is something I really like without all the sub bass booms. Details and positioning are not the best and so is bass texture, but everything else is just so close to perfect especially for its price that I have it to give it one of the top scores I have for IEMs that I come across so far.
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Simgot EA1000
Pros: Build Quality, One Of The Most Revealing Single Dynamic IEM's I've Heard, Sub Bass Extension, Vocals, Micro Details, Clarity, Resolution, Versatility, Decent Accessories
Cons: Vocals And Certain Instruments, With The Gold Nozzles, Can Get A Bit Aggressive And Peaky At Times, Some People Sensitive To Treble May Want To Use The Red Or Black Nozzles.

Simgot was kind enough to send in the EA1000 for review, as part of an Australian audio review tour, I wasn't paid for the review, any opinions, thoughts are my own.

Cable, Accessories:


Cable, Tips, Gear, Ect Used For This Review:
Stock sliver plated Simgot, two core cable, with 3.5mm jack.
Large Kbear 07 tips.
Xduoo XP2 BAL
SMSL HO100 headphone amp
Xduoo XQ50 Pro2 DAC
Tidal HiFi Music.


Build Quality:
Build is exceptional, all metal shell, refined and classy look.

Tuning Nozzles:
Bassiest, with a slight reduction of the mids and treble.
Black: Felt the most balanced, in the lows, mids and highs.
Gold: More elevated upper mids and treble.

Sub Bass:
The sub bass extension is really good on the EA1000, it gets pretty deep, has a natural texture and rumble, hits just right, with good weight and a natural decay, and gives depth to the sound stage.
I don't think I've personally heard another single dynamic IEM, that has the sub bass extension of the EA1000.
The bass is also pretty clean and well textured, pretty natural too.
The amount of perceived sub bass also depends on the nozzles you choose, the red nozzles felt like they gave the most bass, with the reduced treble and mids, while the black nozzles has the most balance between the sub bass, mids and treble, while the gold had a bit more of the upper mids and treble extension.
The sub bass doesn't really seem to bleed too much into the mids, maybe slightly, but it's well controlled, the lower mids are warm and lush too.

Mids are fairly natural, good texture, warm and inviting, not too forward and not pushed back either, also not harsh at all in the mids, and depending on which nozzles you choose, will effect the mids and treble a bit.
I personally preferred the gold nozzles myself, for the bit of extra extension in the upper treble, and gave vocals a great natural tone, with a little bit extra micro details.
Male and female vocals sound great, they have plenty of warmth and great texture, very natural.
Guitars, base, electric and acoustic, as well as pianos all sound really natural, with great resolution.

The treble is quite detailed natural and has good micro details too, and there's good extension in the upper treble, with a good sense of air.
Especially with the gold nozzles, the treble had the most clarity and micro details with the gold nozzles, but it could be a little bright for some, who are more treble sensitive.

EA1000 Vs EA500:
The EA1000 has a more detailed, more pronounced sound, with better micro details, better resolution, fuller, deeper sub bass, a more holographic sound stage, with more micro details.
The sound stage of the EA1000 also naturally has more depth than the EA500 too.
Vocals and instruments are more resolved, clearer, more natural on the EA1000.
I believe it's a step up in the same kind of way the EA500, is a step up from the Simgot EW200, where it has a more mature sound, with a more resolving character, such is the case with the EA1000, you go up again in resolution, micro details and stage depth.
I think the EA1000 offers a great value for money in its price range.
It's a more superior upgrade to the EA500, with a more premium built and accessories package.
Well that's about all I can say on the Simgot EA1000.
It's been an absolute pleasure to listen to.
Thanks again to Simgot for sending out the EA1000 for review.
You can also find my video review of the EA1000 on my YouTube channel,
Also want to thank my fellow Australian audio review tour group members, who also helped to make this review possible,
David Haworth
Marco Patruno
Ricky Scott
Lok Leung
Osman Hashem

I look forward to bringing more reviews in 2024.

Many thanks to anyone who took the time to read this review.
David Haworth
That sounds like the best single DD around. Can't wait to have a listen :) Great review!


500+ Head-Fier
With IEM like these, spending more becomes ever harder to justify!
Pros: - Packaging is lushious
- Great Maintainability
- Deep Bass
- Treble is kept in check
- Voices are intimate and powerful
- Detail
Cons: - If they had a little better technicalities, they would be worth even more, reaching the kilobuck level
- Base cable is single ended 3.5mm. Reviewe'd in 4.4mm cable because it's the cable they deserve to draw out their full potential
When i got the chance to review these IEM, first thougth was: they were made with care in mind. The packaging is beautiful and has some neat folding, showing that SIMGOT wanted tohighlight the care they put in creating them.
There's multi kilobuck IEMs that have worse packaging than this, thus it's a really good starting point. Since it has multiple eartips AND metal filters, it's all arranged so you can keep your eartips in neat storage and your metal filters all safely screwed in a metal support. Might have saved them some money putting it all in plastic bags and call it a day, but instead this approach shows they want to respect the customer that purchases the EA1000 and they themselves think that this product deserve a nice packaging.

Enough with the aesthetics, that ARE commendable, but instead let's talk sound.

Fair warning: i'm using them together with the LC7High Balanced Cable, that i will review separately, because i always think going balanced is the best way to enjoy audio gear.

The instantanenous, immediate impact, before all the reasoning about the FR and technicalities, was soundstage. Using chesky records music, that is quite famous for their realistic positioning, i felt the most sourround experience with an IEM i have ever experienced. Blessing 2, Audeze Euclid....and then out of the blue the EA1000 surpassed them all in soundstage. That itself is a big surprise!

This IEM has 3 swappable pairs of metal filters that can be screwed in. Unscrewing them lets you access the inner parts of the resonance chamber. On this point, i am going to tell something that i feel is fundamental: I NEED TO BE ABLE TO GIVE MAINTENANCE TO HIGH END GEAR. What does it mean? That while with other IEM you need to be careful not to dirty them and if anything gets inside the metal filter and you have any dirt pushed in, good luck taking it out. You need something with powerful suction to HOPE to clean them. WIth this pair of IEM just unscrew them, access them from the inside, and you can clean it to your heart's content.
The fact that a IEM at this price range manages to be able to do this while kilobuck IEM are just condemned if get dirty is reason enough to praise simgot and shame other brands for not thinking such a simple solution was almost mandatory for high end gear. Even more so if you ever plan on selling kilobuck gear. While this is non-sound related, i feel like we need to keep repairability and serviceability of audio gear in high priority, almost on par with sound quality, otherwise we'll have useless throwaway multikilobuck gear and that's unacceptable.

To make it an interesting review, i'll pit it against my Euclid because, of the other IEM i have, it would be almost "too easy" to just declare them the winners. This to me should already be a testament to how good these IEM are.

Black Filter:
Welcome to the jungle: Powerful and controlled bass, pleasant voice, highs are kept under control.
Body Company: Bass are plentyful, mixed in with the highs it turns in a very enveloping sound, detailed and musical. It mixes very well the whole FR. Instrument separation could be improved, but that would push it into kilobuck territory (more than it already does). Compared to the Euclid, they are a step under them in instrument separation and raw detail. But the tonality is great!
It's only a paper Moon: Great soundstage, it seems the low end of properly mastered songs enjoy an incredible wide soundstage compared to its price range, going to rival the euclid. The overall raw detail is lesser but soundstage and musicality make them shine!
Beethoven 5th Simphony Op.67: Karajan sure knows how to bring in the thunder, and i'm happy to say that the EA1000 make for GREAT listening. Again tonality is top notch, instrument separation is good and oen of the best thing is soundstage.

If i were to sum up the technhicality of these IEM is like you can precisely focus on the sound, with a great soundstage, but probably some small limitations in the drives don't let you "see" perfectly the demarcation line between the sources. It might be considered both a flaw AND actual skill. That might sound confusing but bear with me: 100% definition of sound is...not really paramount. Don't think i don't enjoy that, hell i bought the LCD5 for their uber-detail. To have a hint of merging between the various sources isn't outright bad, just that it's not some kind of magical IEM that can outdo kilobucks...yet.
But IF they improve on this, kilobuck territory would be fair game for simgot. Meaning they could make lots of "top fi" IEM become suddenly price-mogged by simgot.

Red Filter:
A little less bass, increased highs. I don't think it's better this way.

Gold Filter:
Feels a little more visceral bass-wise than standard nozzle. I think it contends for the best tuning together with the standard one. I will update the review if i feel to be more in depth about them, but rule of thumb i use them more than the standard one.


Having had the chance to try them, side by side by my only higher end IEMs, i would say that the EA1000 are simgot continuos rise toward the ranks of top-fi gear. Being able to do so on a budged while NOT skimping on packaging and serviceability makes me VERY hopeful of the brand's future. If the pattern holds we might end up seeing a 1k IEM from them that would make the top-fi and summit-fi market VERY nervous.
It's well extended in FR, basses are impactful and detailed, highs are kept under control without sounding shrilly or screechy, mids are kept clear and defined.
Also, do yourself a favour and use a balanced cable on them, they will thank you and you'll enjoy them better.
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Headphoneus Supremus
Simgot EA1000 - Fermat's Last Stand
Pros: 3 tuning nozzles to customise your sound - based around Simgot & Harman Frequency Response Curves.
Excellent sound quality. Goes loud enough to work well in a smartphone.
Cons: Can be enhanced with a better cable. Not much else

Single Dynamic Driver IEM with 3 differently tuned nozzles - £219.99​


Simgot - Fermat's Last Theorem​

With gratitude to Simgot for including myself in their reviewer distribution, I hereby contribute my take on Fermat's Theorem. No money has been exchanged in return for this, or any other review, for that matter. Simgot also provided me with the LC7 cable. I worked out that this constituted a grand total of 9 listening modes. I did them all, just for you.


First off, you'll want to know why this IEM is called Fermat's Theorem. The Fermat is also known as the EA1000. I suspect that no other IEM will be called anything like the Fermat, so, at least for me, I'll find it easier to remember. Think about it - it's already making an impression, before it's had a listen.... Fermat's Theorem is a mathematical problem posed by a French gent called Fermat. Arguably one of the greatest challenges ever presented, it was finally answered by Alan Wiles, in 1995, over 350 years later. I no more understand the question than the solution, but more information is contained in the packaging of the product. In particular, you can become a member of the gold card club. The equation that proves the theorem to everyone's satisfaction is embossed on it, so you can put it in your wallet and proudly display it whenever the conversation turns to either 1637, or integers. The company's brand is described as a salute to Science and Art, and I believe, in the EA1000, they've outscienced all but the most sciency of us.


I am a member of the Gold Card Club!

About the Simgot EA1000​

Does the Fermat justify the lofty aspirations of the Theorem that took three and a half centuries to crack? It does not have the glamour of the multi driver hybrid setup, a useful marketing tool as well as , arguably, a way of overcoming some limitations of the tinyness of the in-ear model. Of course, a single driver design cannot suffer from crossover distortion, a problem which has to be addressed with every other hybrid earphone.
Worry ye not; Simgot has some tricks up their sleeves! Instead of going with a hybrid setup, the EA1000 has a 3 nozzle system. There's 3 different sound signatures to go for. Simply unscrew a nozzle from the driver housing, screw a different nozzle in, and you'll have a sound that corresponds to 1 of 3 different frequency curves.


Harman research is renowned for it's frequency curve. It took a huge sampling of the sound signatures preferred by the music listening public and took an average of them all. Voilà! This was born the Harman Frequency Response Target. This is a curve that many manufacturers have placed their reputations on, and they tune their products to stick as closely to the curve as their drivers can handle. The Harman response is, by definition, a jack of all trades, and a master of none. Not many people chose that exact bass hump and reduction in treble, but there again, manufacturers are pandering to the masses, and it makes sense to follow the path of least resistance, as the Harman Frequency Response Curve will be ok for the majority of listeners.


It's often best to play it safe when you're looking for mass appeal. What Simgot has done is to take 3 tweaks of the Harman Curve, and tune their nozzles accordingly. The tuning is subtle, as I'm sure has been mentioned before. Nevertheless, married to a decent source, the flavours of each become apparent. Yes, I am also willing to include my Samsung A52 smartphone in my list of good matches. I accept, and have no issue, with those of you out there who are minimalists, and use nothing but a phone to listen to your music. That is surely the aspiration of every portable audio enthusiast. It certainly takes a lot less space in one's apartment/rucksack or trouser pocket. For those of you who have seen the light; forgive me! I shall be basing the majority of my insights on the splendiferous Fiio M11.

What it is about there always being something unique about each iem I show you? It is a tribute to the imagination of the research teams that they find new ways to fill what is in reality a tiny space of driver and housing. Simgot's latest iem here has SDPGD and PR logos proudly displayed on its shiny packaging. The first abbreviation stands for 'sputter deposition purple gold diaphragm', the second relates to a new design of a resinating chamber, called 'passive radiators'. The dynamic drivers have dual magnets, the diaphragm of the drivers have been sparkled up with a few layers of gold, they sit in a new acoustic chamber, and the nozzles can change the signature. All in all, a very good sell. The whole thing is presented in a shiny box, with the signature Simgot case. It's ready to roll with a silver plated oxygen free copper cable in the Litz, or woven, design. The cable has a velcro tie and a chin strap, and is terminated in a 3.5 jack.


Simgot realise that many of us have balanced connections on some of our more bespoke devices and to that end, have also supplied me with their LC7 cable, available for $69.99, which not only sports the usual 3.5 jack; it can morph into a 4.4 as needed, an unbalanced or balanced cable; not something I normally see.


The LC7 Upgrade cable

For those of you that are keeping up with this, that means I have a grand total of 12 comparisons to get through; 3 nozzle variants on the smartphone using the standard cable, 3 using the LC7, and the whole process repeated for my M11 test. Wish me luck.....


The Sound Test​

The smartphone test was quickly underway. 3 nozzles, 3 signatures. Will I like the red, blue or black nozzle? For the Samsung phone I went for the red nozzle. The silver steel tube, built around the Harman 2019 curve. This was regardless of which cable I was using. The LC7 cable is much heavier, and would be more problematic for a vigorous workout, but sounded better, needless to say. The Fiio M11, again, no surprises, worked best with the LC7 cable and a 4.4 jack popped onto the end of it. For the M11, my preference was for the copper nozzle. The bass was faster and the mids were slightly more pronounced. The stock cable had a softer sound than the upgrade cable. The termination of the LC7 cable did not initially fit into my A52 jack. With the protective case off, no problems. The Fiio M11 was fine with either cable. My case is a rather bulky affair. It's a sort of pelican design. Thinner cases should accommodate fine, but worth noting if you are thinking of pushing the EA1000 a bit more.


I am pleased to say that I was impressed with the Fermat's. They gave a really good account of an HDCD version of 'It's still rock n roll to me' by Billy Joel from his 1980 album, 'Glass Houses'. This was an Audio Fidelity release, and was an extremely limited edition. This version has long since been out of print, is not available on any streaming platform, has an incredibly high sound quality, and proves that retro is not only alive and well in the 21st Century, in many cases it is a darn sight better. The song was chosen for its fidelity, driving rock sound and use of brass instruments, always a good test for an earphone. The rich tonal cleanliness of the track shone through on the EA1000, with the smooth, silky delivery on my smartphone, contrasting with the attack of the M11. There will be a lifetime of adventures out there for the swapper; does the copper suit classical music better than the middle of the road red nozzle? Will rock , or pop, or hip hop , benefit from the slight bass light of the blue nozzle? I can state that I believe the effort will be rewarded for those who will become loyal followers of the Simgot Fermat.



In the right environment, say in front of TV you need to avoid watching, in a bed where your partner is fast asleep and you're not; this is where the qualities of an IEM like this can flourish, and a full size headphone, such as the similarly priced HiFiMan Sundara, can be beaten. It's difficult to see where they can improve on the sound of a single dynamic driver at the price level of £219.99. There are hybrids out there that people will prefer, there are planar iems in this price range; but they both offer a different sound. The punchy delivery of a single dynamic driver is a timeless enjoyment that , thankfully, has survived, and even flourished, despite the relentless quest for the answer to Hi-fi's ultimate question - how can I improve the sound quality? Sometimes, my friends, the answer to the future lies in the achievements of the past.
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New Head-Fier
Simgot EA1000 Fermat - Something Wicked This Way Comes
Pros: Clean open sound
Great Technicalities
Class leading detail retrieval
Detailed audiophile quality bass
Beautiful build quality
Cons: Bass may be somewhat shy for the basshead
Included cable is good but limited to a 3.5mm SE


The Simgot EA1000 Fermat is yet another release from this manufacturer of high quality iems. Coming in at $220 USD, the EA1000 has a few tricks up its sleeve with a driver compliment that not only includes and advanced 10mm dynamic driver but a 6mm Passive radiator as well. This brings back memories growing up around lots of different speakers some of which used the same tech. As opposed to a ported design, the passive radiator has a diaphragm with no motor, voice coil and magnet, utilizing the pressure from the main woofer to move said diaphragm and in some cases be used to control or tailor the response of the main driver.

Tech aside the main dynamic drive of the EA1000 is described as follows: “EA1000 incorporates sputter deposition purple-Gold diaphragm technology, which is a specialized diaphragm manufacturing process resulting in a diaphragm with high rigidity, lightweight properties, and a beautiful purple gold color.”

Furthermore:” DMDC™ Dynamic Driver: It employs the second-generation DMDC™ dual magnetic and dual chamber technology, optimized for enhanced magnetic flux and improved control, providing a wider frequency range, exceptional dynamic range, and precise high-frequency performance.”

At this point I should point out that every manufacturer loves to put out these descriptions filled with keywords and promises, more often than not accompanied by a lot of hot air. Simgot though may be going down a different path and describing the actual tech which they have implemented to a high degree of audio excellence.

The EA1000 is tunable by virtue of the three replaceable tuning nozzles it ships with. Each does offer a change in sound and I found that the black nozzles afforded the EA1000 the most balanced presentation and were used for the majority of testing.

Easy to drive the EA1000 does offer a high level of technical prowess and deserves to be driven by a more capable source. Tip & cable rolling should not be overlooked here as well in order to achieve that perfect synergy. With respect to a source, I found that it really depended on which nozzle was used. I would recommend either a neutral of warmer source to drive the EA1000.

Read on to find how the Simgot EA1000 Fermat performed.

• Driver: 1 x SPGDP dynamic driver and 1 X passive radiator
• Impedance (Ohm): 16 ohms
• Sensitivity (dB): 127 dB/Vrms
• Frequency Response (Hz): 10 Hz – 50 kHz
• Cup/Shell Jack: 2-pin



The Simgot EA1000 Fermat has excellent build quality. The solid metal shells not only reinforce this observation but are weighty as well. Each shell is adorned with a beautiful white faceplate with tastefully applied branding.
The retail presentation is becoming of a $200 iem and the included accessories are of similar high quality. The cable is quite nice, only negative is that like many others Simgot does not offer a 4.4mm balanced or modular cable at this price.
The EA1000 is medium in size and fitment was not an issue. Comfort in long listening sessions were never a concern.







The EA1000 has bass that has good extension and sounded at times BA like with respect to its speed and control. This is not a basshead set by any means as those folks may find the Fermat wanting. Mid-bass is somewhat more prominent than sub-bass here by the way. Detail and texture reproduction are a standout as well.

Listening to “No Worries” by the Robert Glasper Trio the double bass was a little more behind the drum kit and piano than I had heard recently but was reproduced with the bass texture clearly audible while sounding exceptionally clean. Moving on the “Poem of the Chinese Drum” by Hok-Man Yim the EA1000 was impressive with great control and clarity in the lower registers. “Barley” by Lizz Wright has a thundering drum backdrop and the EA1000 showed its colours being more “Audiophile” then “Party Animal” here with a bass that is articulate yet full as opposed to overly thick and punishing.


The Midrange of the Simgot EA1000 Fermat is arguably its pride and joy. The mids are wide open with excellent clarity. Female vocals in particular have a sense of clarity that is ear catching while male vocals at times did lack a measure of body or fullness. Detail retrieval is excellent with ample micro and macro details heard. The EA1000 does pull more detail out of a track than almost all competitors in this price range without sounding clinical.

“Sweet Love” by Anita Baker had this ICON vocalist coming through with tons of detail and delicious clarity fully allowing her emotional delivery to be experienced. On “Change Your Mind” by Moonchild, vocalist Amber Navaran’s whimsical delivery was enticing.

With respect to male vocalists, “Tenderhearted Lover” by John Stoddart offered similar clarity but lacking some of the aforementioned warmth and fullness tending to sound just a tad thin.

Timbre is quite good and the handling of dynamics and transients also stood out approaching what is usually heard in better BA based sets. Separation and layering were also commendable with the metric of separation being somewhat more prominent among the two.

I need to talk a little more about how the EA1000 handles transients. I found its behaviour in this regard to be excellent. Rim shots had the sharp urgency that made them pop with the falloff being organic.

I was impressed with the DD+PR setup used in the EA1000 and regardless of the controversy surrounding its implementation, the results speak for themselves. The midrange of the EA1000 is a winner and except for a touch of fullness missing from male vocals had an openness and clarity that really pulls the listener in.


The treble of the Simgot EA1000 Fermat is well extended with satisfying amounts of sparkle and air. I have not heard treble reproduced this cleanly from a DD based iem since the much more expensive Meze Audio Advar.

Detail retrieval is very good and the top end is reproduced smoothly with no harshness. Remarkably at times the treble reproduction sounded more BA like but with no BA timbre. This in of itself is impressive to be honest and is a testament to the quality of the driver used and its implementation and tuning.

The cymbal work on Ronny Jordan’s “Vanston Place 12am” was very satisfying really opening up this already airy track. The air was palpable around each tap on the cymbals which was quite satisfying once again.



Simgot are on a roll here. After experiencing the EM6l, EA500 and EW200 I didn’t know what to expect from the more upscale EA1000. Those three previously mentioned iem were quite good and the EA1000 builds upon them with added refinement. The EA1000 has great technicalities and this level of detail retrieval is next level at its asking price. It offers and open sound with ample clarity. The EA1000 is an engaging listen for sure.

If you are in the market for an iem that gushes technicalities and detail with outstanding build quality plus the added flexibility of tuning nozzles, the Simgot EA1000 Fermat needs to be on your very short list.

The Simgot EA1000 Fermat gets a Strong recommendation.


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Barry Adamson from Lost highway soundtrack?!? Excellent review, thanks!


100+ Head-Fier
Simgot EA1000's Review - Well Implemented PR
Pros: Well implemented PR
Good technicalities for a single DD IEM
Versatile ( with tuning nozzle )
Cons: Fingerprint magnet
stock cable is good but only in 3.5 termination

Simgot is a brand that needs to be introduced to the community. They have released several products that remain popular till today, namely the EA500 as well as the EW200, both which i have also reviewed and tested and like it a lot. The packaging of EA1000 is similar in the sense of presentation and style to EM6L as well as EA500, within the box, it consists of a very high quality cable, sadly it is non modular, standard eartips as well as the tuning nozzles. The shell is all metal and the unit feels very solid, as with most mirror finish IEM, the EA1000 is prone to fingerprints and micro scratches as well. The configuration is a 1DD+1PR. In terms of comfort, I have no issues wearing the unit for long sessions (2-3 hours).

Gears used for this review
  • Earmen Angel
  • iFi HipDac 3
  • Hiby R6 II
  • EA1000 with stock tips and Simgot LC7 cable
My review is solely based on what I hear via my equipment and I never consider my reviews to be objective in any way rather a subjective approach. Do take into consideration that everyone’s ear anatomy is not the same, so the psychoacoustics perception might be different as well, but i believe it will not stray too far

Brief Sound Impression for the nozzles
  • Silver nozzle with black ring - Offers the most treble extension and air as well as sparkles, not my preference as my tolerance towards the highs are not that good, but trebleheads will definitely love this tuning
  • Gold nozzle - The treble is slightly more relaxed but the upper mids are boosted so it might be shouty on certain track, depending on my mood, sometimes i actually preferred the gold nozzle, but most of the time i’m using it with the silver nozzle with red ring


Sound Impression ( Red Ringed Nozzle with Simgot LC7 Cable )
The overall tuning is leaning towards neutral bright yet it doesn’t sound dry nor lean. There’s also a slight mid bass emphasis to add the slight warmth or thickness to the overall frequency. Nothing to fault in terms of timbre, very natural sounding overall.

  • The bass is definitely the strength of this IEM, the PR is definitely working its magic here
  • Very good bass texture and also speed
  • The amount of bass is good enough for my library and tip rolling can help to slightly boost the bass as well, or alternatively iFi HipDac 3’s Xbass does work as well
  • Timbre sounds correct to me and the midrange is actually quite lush
  • Vocal doesn’t sound recessed, both male and female vocal has good texture to it,doesn’t sound thin at all
  • Bass doesn’t bleed into the mids
  • In general,i find that the mids are smooth from the lower mids to upper mids ( this is based on the impression of the red ringed nozzle )
  • The treble is smooth, it has enough energy but not to the point where it is harsh and sibilant
  • Detail retrieval is very good for its class, very detailed yet it doesn’t sound clinical and overly analytical
  • Good amount of air that contributes the expansive soundstage
  • EA1000 has very good and expansive soundstage, good width and height perception as well as the depth, this is likely benefited from the implementation of the PR
  • Imaging is good whereby the instruments can be pinpointed easily
  • EA1000 is very easy to drive, but it does scale with amplification, in terms of bass control and dynamics, personally, i prefer pairing it with a neutral or slightly warm source for a balanced and musical presentation
Comparison (Dunu Falcon Ultra)
  • Falcon Ultra is a single DD with swappable nozzle
  • The overall tonality of Falcon Ultra is slightly warmer due to a more relaxed treble presentation
  • Depending on the nozzle, blue nozzle offers the most analytical presentation but on certain track and after a long listening session, it might be a little fatiguing as the uppers mids and treble can be too much for some
  • Gold nozzle on the other hand smoothen things out, a safer upper mids as well as a more relaxed treble
  • Bass presentation on the Falcon Ultra is speedy, it doesn’t have that kind of decay from EA1000 which offers a little bit more fun
  • Both Falcon Ultra and EA1000 are fingerprint magnet


Final Thoughts
Having tested several IEMs from the brand itself, namely the EA500, EM6l, EW200 as well as EW100P, they are all good in their own way and of course with some misses, but my personal favourite from the brand will be the EA1000 that i reviewed today, for the asking price, it offers a lot in terms of technical performance as well as musicality. I think the EA1000 is the greatest hit from Simgot and I'm definitely looking forward to their upcoming releases. The EA1000 is highly recommended!

*The EA1000 and LC7 are sent over by Simgot/Linsoul for the purpose of this review. I thank them for the support and opportunity as always


Simgot EA1000 - Non affiliated
Simgot LC7 - Non affiliated


100+ Head-Fier
Simgot EA1000 Review - "Big Sound in Small Package"
Pros: - Expansive sound
- Great technicalities for 1DD
- Beautiful design
- Tuning Nozzle
Cons: - Stock cable only available in 3.5mm
- Bass amount could be improved a little more; not very EQ friendly

Disclaimer: Simgot provided me with a review unit. All thoughts and opinions are my own.

Introduction and Packaging Impression​

Simgot EA1000 "Fermat" ($219) is a single 10mm dynamic driver IEM with a 6mm passive radiator. I've been quite intriqued by Simgot's naming scheme, with some interesting write-up inside the box about the famous mathematical problem "Fermat's Last Theorem". For those who are not familiar with it, it is one of the most difficult mathematical problem ever solved in human history with the largest number of unsuccessful proofs, and Simgot is drawing parallels between the humanity's effort to solve this problem with their work in designing EA1000 as an homage to the eventual proof of this theorem in 1995. Quite a lofty idea here, but Simgot indeed is one of the first IEM manufacturers who popularized passive radiator in IEM design with the EA2000.

What is a passive radiator?
This is a more commonly used technology in full-sized speakers, it is basically a speaker unit without voice coils or magnet that will resonate with the main speaker driver at certain frequency. It is usually used to resonate with the bass frequencies in a non-vented (non-ported) design.


However, if you see the shell of the EA1000, there seems to be a vent as well as the big hole for the passive radiator, making it pretty puzzling. Also, as I was researching about this IEM (and also its big brother, the EA2000), there are a few skeptical people who expressed doubts whether this PR is just a gimmick and basically useless due to the lack of full seal and the fact that IEM is being used so close to your ears, it would not matter so much. However, as I listened to EA1000, I would say that there is definitely some merit to the passive radiator here. I will get into more details in sound impression.


The packaging feels premium, with an excellent carrying case. The cable is very pretty with a very nice finish, however only available in 3.5mm. Given the power demands on this IEM, I really would have liked it if it is available in 4.4mm. There are 6 pairs of eartips, 2 pairs of each size, so you will have some spare in case you lose some. There are also 2 pairs of alternative tuning nozzles: one pair golden copper, one pair silver steel with black ring. The default installed filer is silver steel with red ring.



Sound Impression​

Sources: SMSL H300+D300 stack, Fiio Q15, ifi Gryphon, Hiby FC6, Topping G5, L&P W2-131
Setup: Stock L size eartips, stock cable (3.5mm), Yongse SCC SPC 2-core cable (4.4mm)
Music Sources: Local FLAC (redbook/hi-res), Tidal Masters, Apple Music Lossless

The IEM has undergone a 30-hour burn-in at a medium volume for prior to the review.

Listening impression is a very subjective experience depending on individual ear shape, choice of eartips, music library, and personal preferences, so your experience may vary.

First, I have to address the tuning nozzles. This is my brief impressions of each of them:
  • Silver with red ring (default): smoothest upper mids with good amount details
  • Silver with black ring: sparklier than the default nozzle, best treble extensions among the three and the most resolving, but can be shouty
  • Gold: quite shouty, but offers the most distinctive texture in upper mids; personally not my favourite

I personally prefer the silver with black ring nozzle, but I do acknowledge that I'm quite tolerant towards some shoutiness. I believe the default nozzle will be have the widest appeal. Also, I think most people will go with the default settings at first, so the rest of the review with the default configuration.

So, the big question is: does passive radiator (PR) make a difference?
I would say it does. Let me explain: in a hybrid design, the tuner can individually adjust individual frequency ranges to match the target sound independently, but in single-driver design, any changes will often affect the whole frequency range. PR allows the tuner to specifically target just the bass frequencies more accurately. Comparing the EA1000 to its PR-less sibling, the EA500, you can tell that in EA500, the tone and texture is uniform across the frequency range, but in EA1000, the bass region is noticeably more resonant and has more reverberation than the rest of the frequency range, something that's unusual in a single-driver configuration.

I find that EA1000 is very technical in the upper mids and treble with a decent amount of air. The overall tuning can be described as neutral-bright, but there is a slight midbass emphasis to add that "thickness". It seems that the PR does something to the bass perception of the IEM, since on graph, it should be quite similar to the EA500, but I feel more rumble with EA1000.


I would say that EA1000 has one of the best bass texture and timbre regardless of the price range. The low notes are rumbly and deep, with long enough decay to get that smooth bass sensation. The only thing that I sometimes find missing is the bass amount, which I think separates this from TOTL-class IEMs' bass performance. I attempted to rectify the bass quantity by adding a modest bass boost with PEQ at around 250 Hz and below or by using ifi's XBass, but I noticed some audible distortion. That said, in majority of my tracks, I find the bass quantity and quality to be sufficient. I think EA1000's bass is definitely the highlight of this IEM.


The midrange is very well done at this price point with a lot of details and natural timbre. There is a slight concern of shoutiness in certain tracks, but nothing that some tip rolling can't fix if it really bothers you. The vocals are neither too forward nor too recessed, and I find both male and female vocals are equally well-reproduced with great texture and note weight. I think the overall midrange impression is very positive for me.


I find the treble to be excellent. I think the presence of the passive radiator allows Simgot to put in a very fast DD with a very good detail retrieval without making the bass too tight. This makes the treble performance also equally a highlight and impressive for the price range. The treble does seem to perform more similarly to a BA, but without the BA timbre. The treble texture is also relatively smooth without any harshness, and the treble extension is excellent. I think EA1000 can easily go toe-to-toe or beat hybrid IEMs at its price range.


Soundstage and resolution are the two standout technicalities of EA1000. I find EA1000 to be grand sounding, some sort of opera house effect to a certain extent. EA1000 does have that lower frequencies reverberations that keeps the staging natural and enhances the sense of spatial awareness. The resolution, as I mentioned earlier, is excellent due to the really agile driver. Layering and imaging also benefit a lot from the expansive soundstage and excellent detail retrieval. For the price point, nothing to complain about.

Driving Requirements & Pairing Suggestion​

While EA1000 is relatively easy to be driven, it does scale a lot with power, especially in the bass department. Some amps with tighter bass control like the H300 and L&P W2-131 have noticeably better bass rumble and texture. I would also avoid pairing it with brighter sources like Topping G5, which may exarcebate the potential shoutiness.

Select Comparisons​

Simgot EA500 ($79):
People with EA500 would be more likely to look into EA1000 as potential upgrade. I would say, EA1000 is indeed an upgrade from EA500 in all aspects; if you want more from EA500, then EA1000 is the answer. Tonality are very close, but timbral quality is much better with EA1000. However, I find that EA500 to be the less fussy one in amp pairing, so depending on your existing setup and upgrade budget, you might want to plan well if you think of upgrading to EA1000 from EA500.

Tangzu x HBB Wu Zetian Heyday Edition ($199):
I mentioned in my previous review that WZT Heyday is my $200 gatekeeper personally. Given that EA1000 is slightly above $200, I think the status quo is undisturbed, but if I was asked to buy one right now, I'd spend the extra $20 and get the EA1000. The level of technicalities are similar, but tone and timbre of EA1000 is way more superior. The rumble of the bass and vocal performance is also much better with the EA1000, I find that the performance difference is much larger than the price difference.

Conclusion and Final Thoughts​

I think Simgot did hit the homerun with EA1000 this time. I personally did not find EA500 to be that special (in fact, I prefer the EW200 instead), but EA1000 is really offering something special. The PR technology certainly works in this implementation to my ears, and it's hard to find what not to like about this IEM. I would easily recommend this to anyone even for blind buy. Easy 5 stars from me.
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500+ Head-Fier
Experience High-End sound on a budget
Pros: Highly resolving pair
Good at technicalities
Impressive tuning
Clean and crisp-sounding mids
One of the best bass in budget iems
It feels like a high-end sound
Cons: The cable does not have a 4.4 termination
Three nozzles feel like one and same
Hello everyone, and thank you for dropping by. I'm excited to discuss and share my impressions about the EA1000, an in-ear monitor (IEM) that holds a very special place in my heart and ears. Much has been said and shared about the EA1000 already, and it is the flavor of the month for the community. We already have heaps of praise and positive words pouring in from all directions, and love for these IEMs is widespread. I am only going to affirm the same about these iems in my own words.

I've had the pleasure of using these IEMs for the past few weeks. Initially, I was a bit lazy about writing a review, waiting for the right moment and mindset to fully express my thoughts. Interestingly, I wasn't even aware of the existence of the EA1000 until @FiaLm asked me to review it. The Simgot brand name was not something I had encountered frequently until the recent buzz around a couple of IEMs from the brand. I was familiar with the EW200, which, in my opinion, is an outstanding IEM for its price. However, I hadn't come across any other offerings from the brand before. EA1000 is a sweet surprise, for sure.

Once the unit was shipped, I began reading the impressions shared by fellow audiophiles, and the excitement continued to grow. There were good words all around, and I was impressed right from the start. Until a few months ago, I wasn't much into budget IEMs. However, with the OD200 and EA1000, my perspective and focus have shifted. EA1000 has the potential to change someone's views on budget offerings. Are they the best budget IEMs I've heard of? Probably yes, but let's delve into the details, and we'll assess that by the end. I am sure reading this review will help you get a good idea of how these iems sound and what can be expected from them.

Rating Criteria:

I want to lay out my rating criteria before we start off. For me, the primary criterion for evaluating audio gear is its intrinsic value rather than its price tag. A higher price doesn't always correlate with superior quality, and similarly, a low-priced product can give enough listening pleasure for it to be called outstanding. I consider the build, features, and, most importantly, the impact on the listening experience. I think the fundamental purpose of audio gear is to enhance the listening experience. So for me, this degree of enhancement in the listening experience is a key determinant in rating a product.

Rating below 4: I really won't be posting reviews of such items unless someone has asked for them.
Rating of 4: The product is good, and some users may find it more satisfactory, but it does come with a few caveats.
Rating of 4.5: The product is excellent and comes with an easy recommendation, reflecting its high quality and overall positive attributes.
Rating of 5: This product can be deemed groundbreaking, a trendsetter, and an eye-opener and deserves a spot on everyone's list due to its exceptional features and outstanding performance.

Technical Details:

Drivers: 10mm dual-magnetic-circuit and dual-cavity structure dynamic
Cable: High-Purity Silver-Plated OFC Litz Structure
Connectors Type: Detachable 0.78mm 2Pin
PRICE: $219.99 USD


Build and fit:

I so much adore the simple yet elegant design of the EA1000. The design on the face plate is a work of art. I am sure everyone has seen the zoomed-in image of those face plates. Doesn't that look adorable? Those metal shells shine brightly and are just exquisite. The shells are small, and the weight seems to be on the heavier side, which is mostly because of the smaller size. Had the size been a bit bigger, the weight would have been better distributed, and they would be lighter. The fit, however, should not be an issue for anyone with small or big ears. For me, it provides a snug fit for my ears without causing any intrusive sensations. It's easy to put these on for longer hours without any fatigue or strain. The nozzle is a bit small and on the wider side. I tried pairing the iems with multiple eartips. Azla Light gives me the best fit, and the shells sit flush inside. I have read a couple of reviews mentioning some fit issues. I think everyone should try these iems with Azla tips; they will find a good fit for sure. Once it fits well and you get a good seal, the bass hits really well. So getting a good fit is of utmost importance for these iems to shine. Also worth mentioning is the non-existence of any pressure buildup whatsoever.


Where should I begin while describing the sound quality? These iems are amazingly tuned and highly capable, and I am just blown away by their abilities. The resolution these iems offer is truly exceptional; it's like they have a monster's ability to unravel every fine detail. It's hard to imagine finding such quality sound in this price range and much beyond, and it's even more mind-blowing that a company could achieve this on a budget. They are bright, or, say, treble-focused, but that hot and spicy brightness will not disturb you much. It should not come as a negative aspect of these iems. It does not get to a level to be called overly bright. Honestly, I do not think that's even a thing for these brilliant-sounding iems. The red nozzle is good enough and does bring down the brightness. If you can pair these with a good copper cable and a warmish dap, you are in for a great surprise tour. Let's explore the sound profile in more detail.

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This is one of the best bass I have heard in a budget- to mid-fi-level iems. I am always on the lookout for good bass, quality over quantity, and these iems possess a very high quality bass. I was in love with the bass since the first time I put them in. It may not be a bass-head level of bass, but I do not think anyone will find them less in quantity. The bass is never underwhelming or overpowering. There is some new tech, and the introduction of a passive radiator makes the bass more fine-tuned and enjoyable. There is a nice feel of reverb and a very lifelike and natural feel to the bass texture. The subbass is quite prominent too. I think these iems have all the goodness of DD bass and add some extra refined bass on top of it. When you listen to some engaging tracks—metal and rock songs—the drums kick with good impact. On less engaging and relaxed tracks, the bass is just right, seamlessly blending with the higher frequencies and allowing you to focus on other aspects of the music. The controlled nature of the bass in these iems truly sets them apart from the crowd.


The mids on these iems are just wonderful. They are a bit forward, which aligns with my preference. The tonal weight is quite good, which adds a nice character and body to the mid-range. Thanks to the brilliant resolution on these iems, every tiny detail is brought forward in the most engaging way. The clean and crisp mid-range is the soul of the show for me. This goodness in mids provides clarity and accuracy, allowing vocals and instruments to shine with a natural and lifelike timbre. There is a very nice richness in the way string instruments sound. Overall, there is an emotionally engaging sound that is more romantic than musical. The upper mids have a bit of higher energy but do not get shouty at all. Vocals on these iems must be talked about. There is a sense of warmth and intimacy in the vocals, irrespective of the genres you listen to. Both male and female vocals are full of soul, with no thinness or unwanted heaviness whatsoever. Every bit of raw power and delicate nuance are conveyed properly. Needless to say, this is again an amazing achievement. The mids are always a special sauce for an iem and I am glad to affirm that this sauce is so exceptionally flavorful on the EA1000.


I have a bit of sensitivity to treble, but with these iems, I do not find any fatiguing treble. If someone finds the brightness troublesome, they may have to put in some effort to tame the treble, but for me, I am pretty okay with the red nozzle and a decent copper cable. I think my dap, LPGT, which is a bit on the warmer side, also helps a bit. On more reference sources, it may get disturbing for some. But I am sure we can take some pain for our little champion to shine and show it's full potential. Once the treble is sorted and pleasant, it is evidently of very high quality—balanced, detailed, airy, and expansive. I think this treble is likeable for all genres—jazz, rock, metal, pop, anything. There is a very decent level of transparency and clarity in the treble region. The decay of cymbals, the strumming of the guitar, the extension of high-pitched vocals—everything is captured quite beautifully.


As evident to this point, these sets are highly technical. I am still unsure how these IEMs are so good at resolving details. In terms of resolution, I think they can give a good fight to most of the iems below the 500 USD mark. The soundstage is quite good, though a bit on the intimate side. Still, there is good depth and height. The imaging on these is quite top-notch and accurate. The positioning of instruments can easily be determined; they have such precision. Adding to all this is quite good instrument separation, which does good justice to busy tracks. The layering of instruments unfolds quite nicely.

Cable Pairing:

The cable which comes with these iems are simply nice. This cable is a silver-plated OFC Litz cable. It does lack a 4.4mm termination which many would find bothering. Thankfully most of us have spare cables which come to rescue. But the omission of a 4.4mm termination is really sad because I really like the quality and finish of these cables. They are shiny, sturdy and lovely to look at. The iems sound as good as on this cable as on other cables. Though I do not have any complaints at all with the default resoultion of these iems, they do resolves quite better when given a premium cable. You can imagine how good this thing can be. I have an Effect Audio prototype cable which is sort of premium quality. The bass impact is better and the treble gets bit of taming. There is bit of widening in the soundstage and there is an extra separation in the instruments. The clarity becomes a lot better. All these things make the iems sound quite better. The bass improvement makes it a lot more likeable. That is what some good cables do to the iems. The few areas of improvement which these iems need are nearly sorted by using a good quality cable.


(EA100 with Effect Audio prototype)​

Source Pairing:

These iems benefit the most from a warm source. A neutral or bright source can make the treble a bit spicier, making it difficult for treble-sensitive people. I have a very decent pairing with my LPGT and A&K SP3000. Because of it's massive sound-stage and clarity in it's sound, SP3k takes the EA1000 to another level. I think these iems perform to their full potential on the SP3K. Both of these daps help with better bass delivery. My preference leans towards the SP3k. On the other source, Earmen Angel, due to the better power supplied to the iems, there are again some enhancements in soundstage and dynamics. However, the resolution takes a back seat as the Angel is not so highly resolving dac.

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To be honest, I wanted to spend a significant amount of time with these iems before writing down my thoughts. In a blind test of these IEMs, I am confident that people wouldn't come close to guessing their price. They are so incredibly impressive. Simgot has pushed the boundary to an unprecedented level, stepping up its game. These IEMs set a benchmark and are undoubtedly the best in the $200 USD range. In terms of abilities and technicalities, they can give a good fight to IEMs that are double or triple their price. With some extra effort in cable rolling and perfect source matching, they reach unbelievable levels. If Simgot EA1000 were sold under the brand name Campfire Audio or 64Audio, the iems would have been priced at more than 1000 USD. I am sure no one will disagree with this. I think setting a price of 200 USD is just too absurd. Other brands in market should learn from Simgot about how to deliver a high-end sound within budget.

Not only are they aesthetically pleasing, but their sound is also beautiful. They are so addictive that you'll find yourself reaching for them regularly. It's not your typical single dynamic driver IEM; it offers much more—class-leading technicalities, amazing tuning, and unbelievable resolution. I adore everything about these IEMs to the extent that I no longer feel the urge to spend a lot on IEMs these days. I know some budget iems can be unimaginably good. Paired with the OD200, it stands as my IEM of the year. I am genuinely in love with these IEMs, and they hold a special place in my heart. I hope they bring you the same joy. Highly recommended. 5/5.
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My main concern though is their soundstage, which no-one seems to describe...apart from this review that states they have minimal depth. As a musician depth of stage is critical to layer & position instruments in the spherical field...I'm wondering if using a balanced source / cable will make them more holophonic??

@activatorfly if you give these iem a better source and a good cable, you will have a really good soundstage, layering and enough depth to your liking. The instruments don’t overlap in any way as the resolution and details are already quite good. For busy tracks too, you will find it quite clean and clear in sound. In my case on LPGT and Effect Audio cable there is nice improvement over stock sound. It surely is a keeper.


New Head-Fier
More of Everything
Pros: -that bass texture and tactility is god send

-instruments sound great overall

great overall package and sound for its price
Cons: -forward upper mid and treble can be bothersome

-vocals can be recessed in some genres

-not the best at center imaging. Not the deepest stage as well
Simgot EA1000 Fermat

"More of everything"


This unit was sent by Simgot. However, they do not hold any of my opinions.


Watch my unboxing here:

Pretty good! You get more than what you need!

1.) The cable is pretty amazing in quality. I never thought I'd have orgasms from touching a freakin cable lol. No really, they feel amazing and built like premium.

2.) Nice eartip presentation. I think 2 sets.

3.) Nice looking case. Can pass as jewelry case for your wife haha.

4.) Interchangeable nozzles. But honestly, I only use the black ones.

5. Overall good unboxing experience. A lot of attention to detail.


- they are beautuful. They arent really that heavy than it looks. You can see the placement of the passive radiator that looks like it also pushes air to your lobes.

Comfort seems good. Simgot hasnt really failed me in this department. They are flush and lightwreight.


-Shanling M3X using UAPP, Hiby, apple music and stock player

-stock cable

-stock eartips


Watch my final review here:

The signature is approaching V shaped due to the emphasizes bass texture and elevated upper mids and treble.

Although the vocals can come across forward at some tracks, you'll loose catching up with voices when all instruments start playing together, at least in my library.

Mids actually sound clean, but can sometimes sound digital. Still I am giving it a high praise because Mids arent just vocals. Instruments sound amazing with the Fermat. Strings, pianos, etc. have great harmonics and overtones.

Treble can be a dealbreaker. It has some elevation in the upper mids and past 10k that might be a con for some. Personally, I do find them a tad forward for my preferences. Although the quality is good because cymbals sound crisp and nuanced, but they can be overbearing on some metal tracks.

The bass is what makes this set special. That passive radiator is doing something. The tactility and texture it offers is as close as you can get IRL. If you've ever played drums, you will notice how easy it is to catch rolls.


✅that bass texture and tactility is god send

✅instruments sound great overall

✅a lot of micro nuance. Enjoy hunting

✅great overall package and sound for its price


❌forward upper mid and treble can be bothersome

❌vocals can be recessed in some genres

❌not the best at center imaging. Not the deepest stage as well


-Please be reminded that my scoring is always based on its price range.

TUNING - 2.5

BASS - 3.5

MIDS - 3

TREBLE - 2.5


P.P SCORE = 14.5

Rank- S+ ( exceptional for the price range, consider saving if you can afford)

Check my scoring here :


This is easy, I just rate the set whether I would grab them for listening. Very subjective.

0️⃣- I will never touch this again

1️⃣- I grab if I remember

2️⃣- Can be part of my rotation

3️⃣- I break my rotation and grab this one today

4️⃣- *** rotation, I’ll listen to these for the whole week

5️⃣- Im selling everything, I will only listen to these haha.

💥Fermat GRAB SCORE: 4

Yeah, I can listen to the Fermat for the whole week and forgot other IEMS I have.


⏯️Binary Chopin

- I really like the Chopin. In fact, when I got to listen to them again, I was reminded why I ranked them S. But I have to say that the Fermat is just technically more capable. You hear more and you get immersed more but the expense of getting a colored sound. Get the chopin if you want a tonally correct sounding set and fun at that same time. Get the Fermat if you want more of everything.


-it is one of my S rankers and I rank the mega5p higher than Aful P5. Mega5p is warmer in tonality and isnt as energetic as the Fermat. The techs on Fermat is higher than the Mega5p even if its only a single DD with a PR. Pick Mega5p if you are sensitive to treble. Pick Fermat if you want more of everything.


- this is an interesting comparison because most people, including me, think that Planars are almost always superior to DDs in terms of techs. However, the Fermat is a different story. I hear more nuance on the Fermat and the Bass performance is miles ahead in terms of texture. Both the Fermat and Planars may have peaks in the treble so they arent a good pick for treble sensitives. But if you have to choose, give Fermat a try.

⏯️Dunu Falcon Ultra

- I think both share the same characteristic of being clear sounding. Dunu Falcon Ultra sounds warmer in comparison and is more tonally pleasing because of the organic sound it produces. Although the Bass is more pronounced on the Falcon, the quality of bass goes to Fermat. Pick Falcon ultra if you need a timbrally correct set. Pick Fermat if you want more of everything.


It took me a while to publish my review, mainly because I want the hype to die down and make sure that my thoughts aren't influenced by other people, or I am just being lazy lol.

The EA1000 becomes a gatekeeper at $200 for me.

It's good enough that I cheated my own scoring for the bass haha. I mean Ive heard bone conduction drivers from Mest mkiii. Ive heard fat freq stuff. I adore acoustune DDs for the bass. But the implemenation of the bass on Fermat just hits differently. The Fermat is by no means a basshead set, but the texture it produces makes it easier for me to follow drum patterns.

So, is it really more of everything? I think it's still an understatement. Let me rephrase.

"It's the best for everything at $200"

Happy Holidays. :wink:


WHERE TO BUY: non affiliate links


I grew up listening to 90’s music. Alternative, punk-rock, screamo, rap, Philippine OPM, Anime songs, JPOP, KPOP, metal, reggae and a lot more.

The artists I regularly listen to are:


Incubus, 311, BMTH, Matchbox 20, The Goo Goo Dolls, Paramore, Polyphia, The Calling,, Babymetal, Metallica, Slipknot, Bon Jovi, Coheed and Cambria, Deftones, Red Hot, Green day,

⭐OPM(Original Pinoy Music):

E-heads, Slapshock, Parokya, Urbanddub, Up Dharma Down, Bamboo, IV of spade, Kamikazee, Rivermaya


IU, Yoasobi, Yorushika, Milet, Reona, Maroon 5, Coldplay, Bruno Mars, Ed Sheeran, Taylor, Dua Lipa, Oliva Rodrigo, Billie Eilish


Carpenters, Micheal Learns to Rock, Celine Dion, Bob Marley, Sitti, Daft Punk, Pink Floyed, Earth wind and fire, Amber rubarth, Sia, Yosi Horikawa

I listen to more, but I can’t just list them all here.haha. Just giving you an idea on what I listen.

Thanks for reaching here. Hope you enjoyed reading. :)


100+ Head-Fier
Simgot EA1000 "Fermat" Review: A Sonic Odyssey with Bright Vibrancy and Engaging Precision
Pros: 1. Clean, crispy, highly resolving & excellent detail retrieval.
2. Very good treble extension, without sounding too fatiguing or harsh (with copper cable & divinius velvet tips).
3. Good quality, speedy and textured bass, the 6mm passive radiator does its magic.
4. Female vocals sound crispy and emotional. Instruments like electric guitar, violin, cello etc are highlighted up front.
5. Although it has an analytical profile, EA1000 can sound very musical.
Cons: 1. Rubbish Accessories included in the box, especially the cable & tips.
2. Sub-bass extension rolls of early, bass-heads will have to look elsewhere.
3. Vocals can sound thin and behind the instruments. The emotional element is missing.
4. The tuning nozzles don't make enough of a difference, a tuning nozzle kit should have been included in the packaging.
5. Although very good for the price, as a single DD it's not a bang for buck deal.

Disclaimer: I purchased the Simgot EA1000 Fermat with my own funds, and this is not a review unit. I did not receive any discounts for writing this review. If you decide to buy this IEM based on my review and find that you disagree with the sound or assessment, that responsibility lies with you. I strongly discourage relying solely on a single review for purchasing decisions in the realm of audio quality, as preferences vary. You should conduct thorough research by exploring platforms such as YouTube, head-fi forums, and various Facebook audiophile groups before making a purchase decision.

My evaluation of the Simgot EA1000 Fermat is based on the Red Nozzle, paired with a custom 8-core 7N LITZ crystal copper cable and Divinus Velvet tips. Out of the box, using the default cable and tips, I observed the EA1000 to exhibit aggressive and fatiguing treble, along with a noticeable upper-mids peak. Being sensitive to treble and averse to shouty vocals, I discovered that the combination of the pure copper cable and Divinus tips significantly tamed the treble and upper-mids peak, although the latter persisted at higher volumes.

Throughout the review, I utilized the Hiby R6 Gen III DAP as my source, experimenting with both the default class A mode for a neutral sound and my custom MSEB settings for a warmer tone with enhanced bass extension. My preference leaned toward the warmer sound profile while listening to the Simgot EA1000 Fermat.

Regarding the nozzles, I found the black nozzle to have the brightest tuning, the Gold Nozzle to feature more relaxed treble but highly boosted upper-mids (resulting in shouty female vocals), and the Red Nozzle to offer good treble extension with more balanced upper-mids, aligning with my preference.

Concerning accessories, both the tips and stock cable included in the package were deemed subpar for an IEM priced at $220. I advocate for manufacturers to provide modular cables or the option to choose between 3.5/2.5/4.4 mm termination for IEMs above the $150 mark. The included tips were deemed cheap, prompting the use of third-party tips for an improved sound experience.


Sound Evaluation:

The EA1000 follows the Harman curve, featuring elevated highs and upper-mids as part of Simgot's house tuning. Despite not being a Harman fan, I found the EA1000 to deliver a fun and engaging listening experience.

Highs (4/5): The treble is bright, vibrant, detailed and well extended. Although it can feel sharp and fatiguing at higher volumes with the stock cable and tips. A smoother treble is achieved with my setup, enhancing air and sparkle without sacrificing details.

Mids (3.5/5): The upper-mids peak may verge on shouty territory, with vocals neither forward nor too recessed. Instruments are more highlighted while the vocals are lagging behind. Lower-mids are depressed and lack body, favoring female vocals over male vocals. My personal preference leans toward more forward, thicker vocals and an improved male voice presentation.

Lows (3.5/5): Bass is very interesting in this one, the 6mm passive radiator does make a difference and it is clearly audible. While it may be moderate in quantity, the bass delves deeply with a commendable tactile rumble when necessary and boasts an exceptional textured quality. The bass is nimble, swift, tight and undeniably satisfactory. The sub-bass extension rolls-off prematurely, yet the mid-bass presence takes center stage, offering a more pronounced and satisfying punch when required. Although the bass has excellent quality and good quantity it may leave bass enthusiasts wanting more in certain tracks.

Technicalities (4/5): The Fermat excels in resolution, rivaling planars with superior, authentic timbre. Imaging is accurate, allowing precise instrument localization. The soundstage is more intimate, my preference is for a more spacious sound at this price point.


In conclusion: Despite my critical assessments, the Simgot EA1000 Fermat has become my daily driver, impressing me with its fun, engaging, musical sound, high resolution, and pleasing mids. While analytically inclined, it maintains musicality without sounding too thin or dry, making it a commendable IEM at $220, though falling short of a bang-for-buck deal that could have been achieved at the $150 price range.

Headphones and Coffee

Previously known as Wretched Stare
Bright and delicious
Pros: Good details, technicals, and dynamics
Cons: May be too bright for some. Thinner mids than I would like personally.



Lets talk about the Simgot EA1000. We will start with the very nicely presented accessories in a very ornate little box. Inside the box is a bunch of replacement gaskets, three tuning nozzles including the one already on it, a really nice, crafted case with a magnetic clasp, the beautify made cable and units themselves. they included tips have three sizes and there are two sets of each size, while it is nice to have extra, I would have liked a different opening size bore. That said the accessories given and the quality overall is top notch.
I found the EA1000 very comfortable and surprisingly lighter than the EA500LM that is currently in development. Isolation is superb and so is build quality, as always Simgot makes a sturdy and good-looking product.

Model: SIMGOT EA1000 Fermat
Name:[Fermat]ultra-premium dual-magnet dual cavity purple-gold diaphragm dynamic in-ear headphones
Driver: 2nd generation DMDCM 10mm dual-magnet dual-cavity dynamic
Diaphragm: sputter deposition purple-gold diaphragm
impedance: 16 ohms 15%(@1kHz)
Sensitivity: 127dB/VRMS(@1kHz)
Frequency response: 10Hz-50kHz
Effective frequency response: 20Hz-20kHz
Headphone jack: 0.78mm 2-pin
Cable: high purity silver-plated OFC wire in Litz structure

The heart of the EA1000 lies in its extraordinary SDPGD™ Technology. Developed over three years by Simgot, this diaphragm is a testament to precision and ingenuity. It boasts remarkable characteristics, including high rigidity, exceptional hardness, lightweight construction, and the perfect blend of elasticity required for deep bass. Unlike conventional titanium or beryllium diaphragms, the Purple-Gold Diaphragm undergoes a meticulous process involving multiple layers of transparent, custom-targeted vacuum high-temperature sputtering on a specialized base film. This results in a mesmerizing, mysterious purple-gold hue, achieved through the interference of reflected light from both the base film and the sputtered layers.

Sound Impressions:
For the majority of this review my equipment was
The ifi Diablo 2 and although I don't usually use Bluetooth for testing the Lossless Bluetooth was acceptable, mostly I used it wired and also the ifi Gryphon, TRI TK-2, Aune x1S and the TempoTec V6.
The Bass: of the EA1000 is impressive offering a nice natural decay and impressive but controlled punch.
The Sub-Bass climb to the Mid-Bass is smooth and linear, there is a nature progression and withdrawal. It is without a doubt one of the best Bass implantations I have heard in some time. It's not by any means a Bass focused or Bass head IEM . The Bass is just a very good quality Bass with good quantity for a large array of music. Jazz sounded so inviting I listened for so long I forgot the time.
The Midrange: on the Simgot EA1000 are forward with a superior clarity and fine details. I find the level of forwardness to be fine, but I could understand it getting a little spicy depending on music and equipment. I would recommend a warmer source to compliment the brightness of the EA1000. I found Female voices to be crisper and more energetic and male voces to be more pleasant and natural sounding. Separation and instrument tone was far better than average.
The Treble on this IEM was open and clear with details I wasn't expecting from a single Dynamic. The EA1000 almost sounds like a hybrid in the upper frequencies, it's a testament to the great tuning at Simgot. I found no harshness using my equipment other than the Aune x1S 10th Anniversary. The Treble in general presents as Neutral and full of fine details.
Soundstage: on the EA1000 is open and wide but very organic sounding, instrument separation and location are above average and very good in my opinion. Busy recordings are no problem, and it will work excellent for mobile games.

My Afterthoughts:
The EA1000 is an extremely well-made and good-looking IEM with a wonderful combination of technical prowess and enjoyable qualities. The EA1000 builds on the strength of the past and delivers a well-tuned Single dynamic. This is one of my favorite Single DD right now.
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New Head-Fier
Pros: 1. Great looking iem

2. Built like a tank

3. The supplied cable is fantastic

4. They sound really clean while being fun and engaging

5. The overall bass is really good and clean

6. Female vocals sound majestic
Cons: 1. I had some serious driver flex

2. Male vocals take a bit of back seat (something which comes with the tuning, but still thought of mentioning it)

3. The duplicate tip selection is a bit weird, i would have preffered if they had supplied some more tips along with foamies
Introduction :-

EA1000 you probably might have heard about it if you are in the hobby. This is the new hyped up iem from SIMGOT in 2023. Is it that good? Well ya! SIMGOT has been on a roll this year with all their product launched this year being universally praised and for all the right reasons.

This is my second SIMGOT product so I am really excited for these! Lets find out!

I have also shared a video version of the review at YouTube any support there in form of a view, A like or A subscribe is greatly appreciated. But if you so wish to read the written version you can read this.

Would like to say a big thanks to SIMGOT for sending me this review unit, all the thoughts and opinions you are about to hear are my own.

I will be as usual following my bullet style format for better readability for those who are dyslexic and in general find it hard to read long paragraphs. I follow this guide in general from the British Dyslexia Association.

Build, Comfort and Accessories:-

- They come in a great packaging where in you are greeted by this opening mechanism and a message from the CEO and also about the fermat theorem. Oh this iem has some maths in its name.

- They retail for the price of $220

- They have a case, two pairs of same tips, a gorgeous cable, replaceable nozzle rings, three different types of filters with one being applied to the iem out of the box and the IEM.

- Sadly the cable isnt a modular one and at this price range I would have expected it to have one. But the cable is absolutely fantastic and gorgeous and it is so malleable for daily use. Fantastic cable from simgot.

- The iems are built like a tank and they look absolutely gorgeous and also they have this gorgeous glass faceplate. Generally I am not a fan of logo or names on faceplate but this simgot logo I think looks really good here

- The case is really basic, I would have liked a better case with a zipper for better security when chucking it in the bag

- The tips aren't ok, but they should have provided with more tips than usual and whats weird is that they have the same type of tips twice. A pair of foam tips would have been nice.

- They are really comfortable to wear although a bit weighty on the ear, but your fit might vary depending on the tips. For me the stock tips didn’t fit at all I had to resort to KZ foam tips

- Depending on the size of the foam tips I wore the isolation was ranging above average to some of the best

- These have driver flex (atleast for me) specially on the right side

- The nozzle length is quite small and it causes some fit issues hence the reason I wear foam tips

- These have one 10mm Dynamic driver and one Passive Radiator


Sound Impressions:-

- Well It follows the harman sound signature with a variance on the upper mids and treble depending on the filter and also the PR makes a difference as to how the bass is heard.

- There are three nozzle I will be using the red nozzle for entire sound impressions.

  1. Black Nozzle has the brightest tuning this is for trebleheads
  2. Gold Nozzle has very sharp upper mids but the treble is a bit tamed this could be for someone loves very sharp female vocals
  3. Red Nozzle brings down the upper mids a bit below than usual and this improves the treble extension while maintaining the overall beautiful treble of the iem.

- These have fantastic timbre as expected form a DD!

- I used the Fiio BTR5, Hiby FC6, Muse HIFI M4, Razer USB-C dongle dac, My smartphone

- It pairs very well with a warm source like the Hiby FC6. They make a fantastic pair

- They are very easy to drive although they do scale well with more power.


- The sub-bass is ok, for songs like “Waltz By Sunny” I would like a bit of more punch and rumble in this region. But this is by no means to say that sub-bass isn't enough for me to enjoy. I personally would have enjoyed a bit of more sub-bass

- These are a bit mid-bass focused hence it shines over here. When listening to “Waltz by Sunny” or “Crack Crack Crackle By Classy” it shines over here. There is no mid-bass bleed

- The bass is very well textured and the quality of the bass is very nice.

- Instruments from song like “Galactic Funk” and “Looking Up” the 1985 live edition By Casiopea sounds very good. Specially Tetsuo Sakurai’s Bass sound just right over here. And if you listen to it with even larger foam tips the experience is even more elevated here.


- The overall mids is on the back seat as expected as it follows the harman tuning. But it is not that far behind that you wouldn't enjoy the vocals

- The male vocals Like Chris Cornell, Bill Wither and Leonard Cohen sounds really good and their thick voice comes across really well but it does sound a tad bit behind the instruments

- The female vocals as expected sound absolutely fantastic! Hako Yamasaki’s “Ano yume Ni” sounds really good but this fantastic vocals could be a bit much for some even with the red filter. I am absolutely fine with it.


- The treble is really good! They have fantastic quality and details in this region with the black this could be a treblehead iem.

- Treble here sounds really detailed, but for some this could be a bit sharp in this region specially at higher volumes

- It has fantastic treble extension, probably even beats my 7hz Timeless AE which is a planar iem


These are fantastic here, when listening to 1985 live album these are a class leader in my opinion at the $200 price point.


These have fantastic soundstage when listening to soundtracks from the same 1985 live album form casiopea it feels so immersive. They have great depth and also width for the soundstage.


When listening to yumeji by Nano.Ripe it has this great starting instrument section playing on the behind of your left side and the same thing a bit near on the right side and it sounds just so good and right. Exceptional!

Gaming Test:-

- Due to the fantastic soundstage and imagine these sound really good and I think they make a great gaming IEM.

- The situational awareness and the hearing your enemies around the corner is really great with these. But when there is a lot of gunshots happening it could be shouty for many and cause ear fatigue for the treble region.



- SIMGOT has been doing some awesome stuff in 2023 the EA1000 is an example of that. They have done a great job here with overall iem here

- Although I can somewhat understand the lack of modular cable but providing duplicate eartips while not supplying foam tips and some double flanged tips was a bit weird. But once you get a good fit these do sound awesome.

- If worn with a foam tip and paired with a warm source these do sound really really good. A quality bass with wide soundstage and great imaging and excellent treble extension.

- It does a great job of sounding clear overall while having a fun signature and letting me enjoy the songs on my playlist.

- These are a must buy in my opinion if you are shopping at the $200 or even $300 range or atleast they need to be on the top of your shopping list if you are shopping in this range.

Again a big thanks to SIMGOT for making this review possible. They have had no inputs in this review and all thoughts and opinions are my own.

Have a great day ahead
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Headphoneus Supremus
Pros: -excellent resolution unexpected at this price range
-lively and cohesive bright near analytical tuning
-among best Harman target IEM i've heard
-fast vibrant flexible punch and rumbly bass
-among best bass performance under 500$
-crisp clean and sparkly treble
-fast and controlled attack
-transparent and open mid range
-fowards female vocal
-lot of micro details
-excellent percussions rendering
-new ''single'' DD benchmark
-excellent craftmanship
-good cable
-good sound value
Cons: -not for those sensitive to upper mids
-timbre is on the bright side
-not thickest or lushest mids
-not for romantic vocal lover
-back plate could be different than EA2000
-bass fi doesn't mean it's for basshead
TONALITY: 7.8/10
TIMBRE: 7.5/10
IMAGIN: 9/10


2023 is the Simgot return year and let say the praise is everywhere apart perhaps from affiliated reviewers with personal interest in promoting different audio products they are closely connected too.
This undoubtable success begin with the EA500, then go next level in sound value with EW200, then go warmer a bit moe underwhelming technical performance wise with EM6L….

Then all this experience with their unique approach to Harman tuning target pay off and they release their flagship IEM, the EA1000.

Priced 220$, the EA1000 use 1x 10mm dynamic driver in tandem with 6mm passive radiator.


This isn’t a normal DD, so I add all the info here:

SDPGD™ Technology: EA1000 incorporates sputter deposition purple-Gold diaphragm technology, which is a specialized diaphragm manufacturing process resulting in a diaphragm with high rigidity, lightweight properties, and a beautiful purple gold color.

DMDC™ Dynamic Driver: It employs the second-generation DMDC™ dual magnetic and dual chamber technology, optimized for enhanced magnetic flux and improved control, providing a wider frequency range, exceptional dynamic range, and precise high-frequency performance.

1DD+1PR Architecture: Combining a 10mm full-range dynamic driver with a 6mm lightweight composite diaphragm for a more responsive full range of drivers and helps maintain stability and driveability.

Replaceable Acoustic Nozzles: With a threaded removable and interchangeable sound nozzle design, EA1000 offers three sets of meticulously tuned sound tubes, including options with brass and stainless steel materials, catering to diverse sound preferences and expanding product adaptability.

Simply put, as conter intuitive it can seem: the EA1000 is an upgraded EA2000 for 100$ less.

Let see in this review if it can be consider as a new benchmark dynamic driver IEM under 300$.



Construction wise, the EA1000 is practically a EA2000 in smaller size and with a 2pin connector instead of MMCX. This 2pin choice will have pros and cons since it’s more prompt from falling and disconnecting due to heavy housing size, which happen to me 2 times and I was very lucky to don’t loose one piece when it fall inside my coat. As well, with MMCX we can swivel the IEM to ou fitting need, which cannot be done with 2pin. Anyhow, the fit is good as well as comfort, it’s just the disconnection issue that can happen when 2pins get a bit bented, which you can solve by realigning the pins yourself.So, like EA2000, the construction is examplary, craftmanship is high grade with lot of care to details, I don’t find any imperfection like. My only qualms is about half recessed 2pin connector that make some cable to don’t fit well and don’t offer same secure fit as fully recessed pins.
Metal used is thick and heavy, it offer good isolation and few noise leakage since venting is on front of housing.


The included cable is of excellent quality but come in single ended 3.5mm plug. It’s a high purity Silver plated OFC litz cable that offer very clean signal transmission and preserve the dynamic rendering without damp or gain warmth.


In term of accessories, it come in minimalist package and include this cable, a very nice quality case and 6 pairs of silicone eartips (that it seem ive lost so its not in the pic sorry!)



The EA1000 is extremely similar to it’s big brother EA2000, but with a more balanced tuning as well as 3 tuning nozzle that make me wonder the marketing strategy behind it since well….unless your an hardcore treble head, their no way anybody will conclude the 100$ pricier EA2000 is superior both tonaly and technicaly.

Yet don’t expect a warm and relaxed musicality with these technical beast since we are into W shape meet harman target territory, vivid and dynamic way. But it isn’t a trebly or shouty fest neither, unlike it’s bigger sibling.

I think it’s evident now that Simgot know how to push technical performance bundaries of single dynamic driver with praised IEM like the EW200 and EA500, their audio engineer sure are sensitive about resolution of imaging and the effect of transient speed of the drivers on it.

With the EA serie, they get the help of extra passive radiator transductor to control and clean up acoustic resonance of sound projection, and improve macro dynamic rendering.

Tonality wise, I would call it balanced W shape to vivid bright neutral. This isn’t a basshead IEM and the PR (passive radiator) don’t boost anything, it tend to add edge and roundness to attack and clean the bass resonance that would blur the kick or make sub bass boomy and too diffuse. It add a sens of control to dynamic.

But their another thing to underline with the EA1K, it’s the 3 tuning nozzle included with it. 2 have foam filter in it to damp dynamic loudness spike off upper mids and treble, while the gold nozzle seem to be made of copper and don’t have any damping filter apart nozzle mesh.
It’s the one my review will be based on since other 2 do interfer negatively on plain technical performance by adding a bit of hazyness in the air, which stole sparkle and micro details as well as proper layering articulation. It damp everything in a lean macro dynamic way, affecting the 3D spatiality of musicality.

The black nozzle is the warmest one with smootest but most lean upper mids and mid range instruments and vocal, the bass is warmer and overall balance more U shape and less vivid. Bass is is thickest and more dominate part yet the punch is mellow while slam is wide and foggy.

Black nozzle is similar but with sharper mids and treble, still it’s not airy nor very crisp. It's the brighter of the bunch.

And now the gold nozzle I review today is most balanced I feel.
EA1000 is one of those few IEM that isn’t ridiculous to show it’s Hiresolution certification since it’s among most resolved earphones I’ve ever heard and the level of micro details seem infinite. After 500 IEMs testing, I use the cliché sentence ‘’I hear things in my music I’ve never hear before’’ once a year and in 2023 it would be for EA1000 in single dynamic driver realm. Sometime it feel like this IEM use electrostatic driver to deal with upper treble because percussions are so effortlessly resolved and cleanly extracted in their own layers space.

But let begin with the BASS: fast, thight, round and texture with clean linear vibrant extension. While not basshead, it’s not bass light, you feel the thump and the punch and kick drum have this definition edge that improve macro dynamic and tactile separation. Add this tractility to a clean separation with mids and yes, your into ‘’Bass-Fi’’ territory where flexibility of bass meet high resolution of it’s presence.
The attack is speedy and very well controlled with few to no bass warmth intrusion, yet it’s not a cold sounding or thin bass at all, we have both punch and rumble here, well balanced, rounded and controlled way.
Kick drum isn’t drowned in sub bass boost and can cohabit with bass line in a well layered way where each bass and kick are textured and feel natural in density. In other word, while not guilty pleasure warm due to too much high bass-lower mids boost, the bass isn’t just about sub boom and don’t feel overly U shape. When the track have dynamic heft in bass region, it’s fully restitute in impact weight as well as vibrant and very rich rumble sustain-release.
Bassist will love the EA1000, as well as drummer, and this is sure another confirmation we are into Bass-Fi terrritory which the passive radiatorr filter improve for sure by cleaning unwanted resonance and pushing it out of the shell, adding this natural grunt inherent to electric bass line or cello.
Let’s not be shy and tell it loud: EA1000 offer best bass performance I’ve heard under 300$ (and surely above), period.

Then the mids is where I feel it will be hit or miss depending of you tonal and timbre preference, mid range is most mysterious and subjective frequencies range for audiophile when it comne to emotional response, and we aren’t in warm or lush territory here since the EA1000 bet on crisply high resolution, definition edge and layering transparency. It’s clean and near analytical sounding, it’s bright but not shouty or sibilant, it’s sharp but not very unbalance in texture info even if yes it’s boosted, unless you use Red nozzle that warm a bit edge loudness of attack release but still, it’s not smoothest mid range out there.
The presence of each instrument is clean and well define in delimitation, it don’t feel compressed and open up widely while keeping macro readibility very well resolve and transparent.
Note weight hit fast but don’t have extra weight to it, piano have natural attack resonance that will get hidden in warmer or less clean and well resolve IEM.
Some might find the vocal a bit thin, I’m one of those and female vocal aren’t the most pleasant to my ears, they are quite ‘’gently’’ bright and their too much texture boosted sometime, it’s not shouty and rather lean unless soprano that goes very loud.
We are in wht I would call ‘’mature mid range’’, it’shigh fidelity in restitution, fine details are plenty, separation of instrument while not the widest in space have clean separation as said.
For those that like rich hyper realist texturing of instrument that don’t go harsh, screamy or euphonic, this will be like lifting an unwanted blur from your mid range, but for romantic listener that need lower mids coloring the fullness of instrument will be trade of with this very presence richness boost.
I do think EA1000 can be even good for monitoring purpose, it’s that competent in term of high definition and controlled attack that avoid resonance blur and muddy macro dynamic.
Yes, I wish the mids were as lush and thick as the bass rendering, but this is pure tonal preference I guess since we have techinical crisp mid range that will make jealous lot of pricier IEM.

Then with the bass, the treble is the other master of the show that can’t let indifferent nobody. We aren’t in harman purist target that goes down after 10khz here, and this explain why we can perceive the EA1000 as W since it’s highs are vividly extended yet well balanced too, it’s not too spiky in fact only spike might be after 10khz where it add air, brilliance and sparkle release.
For me, only excellent DD or ESTs can deliver sparkle properly, and EA1000 is a good example.
Begining with percussions, it’s ultra crisp and snappy, with this metallic brilliance this isn’t possible to mimic with fake tuning trick, it’s due to proper highs covering.
Snap, clap, snare and percussions all have this clean sharp edge to it that permit extra positioning accuracy that add sens of openess and air on top.
Whatever the speed, the EA1000 DD can deal with it, ive try prodigious drummer with the EA1000 that is super diversify and speedy with cymbals and their no error or limitation in timing, it’s all crisp on top of the track and easy to follow, it add extra excitmenet, add this with bass and your in for very captivating musicality.
As well, this isn’t all-in wide range treble covering since it doesn’t boost background hiss of bad track that much, it’s not a trebly or violently analytical IEM like GeekWold GK100 for example.
Acoustic guitar aren’t boosted in body but in crispness, which make it very appealing and improve definition of attack. Electric guitar feel a bit more thin, presence is very well done and not shouty, very well layered but density of instrument distortion isn’t boosted. Clean and super well define it is, but here perhaps some extra crunch and euphony will be benificial.
Then one of most challenging instrument to restitute, the harpsichord, do mostly well but lack proper note weight which underline again a lower mids scoop somewhere. It don’t feel as distant as with a lot of other IEM, but still, it don’t work.
Harps do better, so pulled string instrument tend to sound more dynamic in attack overall, since violin stroke isn’t as authoritative in lead attack and slightly thin timbre is less prroblematic for guitar and harp than saxophone, vocal and even violin.
Nonetheless, I’m very far into critical nit picking here, and could have just write: it’s super crisp, transparent, airy and sparkly and effortlessly reveal micro details without sounding agressively bright.
While vivid, it’s overal delicate for most instrument apart percussions.
And to get this attack control and clean clarity at this price is sure something to celebrate!

The Soundstage is just above average wide, and notably above average deep. Center stage is a bit recessed due to this deepness too, you’re not in middle of music in an intimate way with EA100, more like 3 rows from the scene. It add concet like presentation to your music.

Which certainly benefit imaging capacity. Another highlight of these marvelous IEM. We have both the transperent layering that benefit macro resolution readibility as well as spacious instrument separation.

Side Note:
The tuning filter do inflict on tonal balance slightly and it’s not like a tuning switch that can add 5 or 10db of bass, it mostly damp treble and upper mids with the black filter that have foam sponge in nozzle as seen in pic, but this will affect macro dynamic crispness too, thicken bass and mids a bit, yet not make it dark or super smooth sounding.

Since the EA1000 are both easy to drive and very revealing, it don’t benefit from big amping but a clean and dynamic source, this IEM can reveal noisy noise floor too.

Eatips have great effect as well, but stock one are good enough, smaller nozzle will put forwards upper trreble while wide bore can put forward upper mids and bass, yet open up soundstage too.

When an IEM is sensitive to source, it tend to be sensitive to cable, stock one is good enough but you might want to upgrade to LC7 for modular plugs advantage as well as the reason Ill underline here:


Stock cable VS LC7

Ok I’ve AB these 2 cable intensely, with some tracks signal transmission difference wasn’t that evident in fact, then with ‘’Devilled’’ from Gwilym Simcock ultra speed and prodigious drum, sax and piano trio I can conclude this:

Dynamic is leaner and more controlled with the LC7, while stock cable have louder attack peak so cymbals can be slightly more splashy, upper mids more aggressive but definition is a bit edgier too, making the overall tonal balance hint more lively and aggressive.
Stereo and center stage positioning is more even in distribution with the LC7, at first I find stock cable to be better in steeo channeling until I feel center stage was lacking and everything sound right or left apart bass.
Bass is more dynamic, chunkier and more euphonic, less transparent and well layered with the stock cable, the rumble is more excited so sub bass line will tend to add it’s sustain in front of kick drum, mixing and adding it’s energy while with LC7 its leaner and deeper in extension that go behind a flatter punch, its cleane and more textured too.
Mids are wider in presence, more transparent, more centered and better layered with the LC7, clarity is less foggy and sound layers easier to extract. Upper mids are more energic with stock cable and can make some vocal poping out moe, but not opening up in they air, it’s moe shouty overall.
Treble is a notch crisper, while it’s crunchier with the stock cable, again, dynamic spike is less excited with the LC7, micro details can be perceive further in blacker background too, suggesting a cleaner noise floor than stock cable.

All in all, the LC7 is more neutral in signal transmission and I feel it interfer less with high fidelity of music reproduction. It don’t color bass with euphony, nor boost or tame it’s dynamic. Some pure silver cable I have try tame bass impact and weight, it’s not the case here. It doesn’t boost the treble nor darken it. Imaging can be greatly improve again other cable like stock one of NightOblivion Butastur. Cable seem to really interfert with proper stereo channel separation and the LC7 is a master in that regard.




While excellent, EA500 offe a very similar sound experience and balance but can’t compete with technical performance like resolution and both bass and treble response of the EA1000.
The bass is more speedy and controlled, better define in mid bass punch and more linear and deep in sub bass extension which feel boomy and warm and morre one tone with the EA500, overall low range is cleaner, less boomy, riche rin fine details of texture and edgier in separation with EA1000.
Then the mids are more transparent and crisp with EA1000, so they might feel a notch thicker with EA500 due to this extra subtle bass warmth we can get in lower mids, this mean resolution is a bit more hazy too and not as clean in separation, we have more upper mids loudness so vocal feel brighter and more upfront, a bit more euphonic and opaque in texture.
Treble is more vivid, brilliant, sparkly and airy with the EA1000, it’s more snappy for fast percussions which are better detailed and edgier in proper definition and timing speed. Natural resonance is longer and better resolve.
Soundstage is very similar in wideness but we can dig deeper in EA1000 soundscape.
This mean Imaging is notably superior, with crisper positioning and more transparent sound layering.

All in all, EA1000 is logical upgrade to EA500 in term of technical performance and offer very similar tonality with higher resolution, better attack control and more high fidelity imaging.


Another excellent single DD, the SM2 is slightly more V shape with warmer bass and upper mids, which make the EA1000 feel more W shape and crisp neutral with bass boost.

The bass is more excited and can feel faster yet less well controlled with the SM2 since resolution is warmer, but the punch is more thumpy. Sub bass is notably more rolled off and muddy for proper bass line layering unlike EA1000 cleaner and more textured and define bass response that have more vibrant and deep rumble yet feel less forced and boosted since the driver is more stable in transient.

Mids are a bit thicker again with SM2, quite similar to EA500 in fact, it have more lower mids meat and lusher presentation but not as wide and well define presence nor as highly resolve center stage. EA1000 have edgier mids, timbre isn’t as pleasantly colored and offer hyper realist resolution and way more micro details and texture info.

The treble extend further with the EA1000, its way crisper and more brilliant, we can feel half the percussions are presented with SM2 while we can pin point each of them with EA1000, sustain release of attack is notably cleaner and more controlled too. Overall treble response is from another league here.

All in all, the EA1000 is globally superior in technical performance yet offer a colder and brighter tonality so for plain female vocal love I would go SM2, while for all the rest it would be EA1000.

VS Moondrop KATO

Now from all those 3 the Kato are the most undewhelming technicaly wise when I compare it to EA1000 macro resolution feel super hazy, layering seem one dimension, bass lack punch and overall musicality has this crunchy brightness to it that affect texture negatively with strange euphony.

This euphony make the mids slightly thicker yet unlike EA500 and SM2, it’s more scratchy than smooth in texture mix.

The bass feel more U shape yet leaner in dynamic and more hazy in sub bass extension, gently boomy I would say with inferior separation, less clean and well extracted bass line, less attack edge and roundness, kick drum feel half cooked in dynamic rendering while fully rounded, meaty and textured with EA1000.

The mids of Kato are darker and more hazy in macro rendering, vocal are more focused but leane, hint lusher but in a brightish way, definition lack the edge of EA1000, mid range instrrument mix togheter more easily with the Kato too. I’m not a fan of vocal of both.

Treble is thicker and darker, more crunchy and notably less clean, sparkly and detailed than airier crisper EA1000, it sound very cheap and not refined, super hazy in micro details and attack sustain-release, it’s just a shame to compare this freq section with the Kato.

Soundstage is wider, airier and deepe with the EA1000. Slightly taller but overall more compressed and in your head with Kato.

All in all, Kato is just ridiculously inferior in technical performance….but again for those seeking more colored niche tonality that seem to ‘’excell’’ in one thing only-vocal, Kato might be it….though even a Tangzu Waner is has good in that very department…



The Simgot EA1000 are simply mind blowing in term of technical performance and offer effortlessly high and clean resolution that we could expect from way pricier IEM. It's in fact even cleaner and less distorted in transient than FInal A8000, this is how insanely capable is the dynamic driver in there.

Not only that, but the passive radiator solve one of main issue of other Simgot offering which was the bass performance and control, here it's fast, full bodied, rich in texture, both punchy and rumbly with great elasticity, yet not boosted at guilty pleasure level to keep it well balanced and separated from other frequencies.

To say i'm impress by technical performance of EA1000 is an understatement. And the good news is that it's notably better tuned than pricier EA2000 which is brighter and more spiky W shape tonality.

Sure, it doesn't mean it will charm my ears or everyone in term of mid range especially, which is something I nte and hope will help people make the right choice for their personal tonality and timbre appreciation.

All in all, Simgot EA1000 is among best IEM I,ve tested in 2023 and for this reason it's:



PS: I want to thanks Simgot for sending me this review sample. I'm not affiliated to this company and have zero personal benefit to write a positive review.

You can order the EA1000 for 220$ here: .html
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Headphoneus Supremus
Simgot EA1000 Fermat
Pros: -Highly resolving-highly detailed
-Highly technical-stage, imaging, separation, accurate timbre
-All metal solid build- medium size, ergonomic
-Sputter Disposition Purple Gold diaphragm
-6mm Passive Radiator- front of shells.
-Dual magnetic, Dual chamber
-3 tuning nozzles provided
-Highly detailed treble with plenty of air
-precise imaged mids presentation
-deep rumbly textured bass
-Well matching cable
Cons: -3 tuning nozzle are all tweaks of harmon tunings
-2 of them will bring a lot of upper mids and trebles.
-wish there was a warm option in one of the nozzle
-needs aftermarket cables, tips and a nozzle kit for absolute best sonics
Simgot EA1000

Simgot is an IEM manufacturer that has surprised a lot of folks with their IEM designs, especially noticed more recently with some outstanding offerings. While the established norms for similar designed IEMs, referring to Dunu and Moondrop continue to bring out IEMs with their version of single dynamic IEMs. Simgot has quietly garnered some serious buzz for their IEMs. For me what put them on the map was their fantastic EA500. To this day it is arguably one of the best dynamic IEMs in its price class.
Another very notable budget offering from the group is the EA200 which I did a review for here. The new EA1000 is an all metal dual cavity, dual magnet design with a high level of sound balancing and an added passive radiator for its make up. I know that seems to be a lot of design cues for a single dynamic but the end results more than speaks for itself. In this read I will get into what makes the EA1000 leap into a different category of IEMs at the price level, what's good about it and what is not so good about it.

The EA1000 was provided by Simgot for the purpose of a review. They have been burned in for a period of a week straight and are now ready for evaluation using my sources. Fiio K9pro ESS, Ibasso DX300Max, IFI gryphon, IFI Signature, Fiio M15S, Fiio M15, Shanling M6 Pro. You can look up the EA1000 on their website here.. You can purchase a set for you from your favorite online retailers.

The new EA1000 is double the RP of their outstanding EA500 with the EA500 being a very affordable sub $100 offering from Simgot that really incorporates a lot of their tuning and know how which turned out be a fan favorite among budget enthusiasts and or just fans of good sounding single dynamic IEMs. So how does Simgot do one better than the EA500? For one it is using a new whats called SDPGD diaphragm. Or Sputter Deposition Purple-Gold Diaphragm. Supposed to have a golden purple hue to the look to the drivers. Regardless of what it is called I do know the driver being used for the EA1000 is highly resolving. Then there is the 6mm passive radiator up front of the housing that supposedly helps with bass control and its deep textured rumble. Add to that their dual chamber dual magnets optimized for enhanced magnetic flux. Then adding to all this is 3 highly precise tuning nozzles that give you slightly tweaked harmon tunings from these nozzles that mostly affect upper mids to trebles for each nozzle and even more options if you explore the EA500/EA1000 tuning filter kit sold on Simgot website. I will go into this aspect a bit more toward the end of the read.

What you get.
The new EA1000 comes with an all metal designed shell with a passive radiator up front of the shell. Very nice comfortable design for my medium sized ears. I was able to use them pretty much all day at work without much in the way of discomfort or a fidgety fit. A squarish sized magnetic lid case. The cable that comes with the EA1000 is a well matching cable that enhances the technicalities for the sound. A silver plated litz OFC cable in single ended. The only complaint I have about the cable is I wish there was a balanced option. The EA1000 scales amazingly to more power like all dynamic based IEMs. Hence the need for balanced cable. However for what is included no complaints really, not to mention it matches well with the chrome metal scheme of the EA1000. 2 sets of standard silicone tips and 3 sets of tuning nozzles. The tuning nozzles are fine tuned with specific upper mid and treble emphasis for different types of harmon tunings. To be specific. The red ringed nozzle for harmon 2019 target, a black ringed nozzle for a Simgot classic target, basically Simgot’s version of the harmon tuning, finally a clear ringed nozzle on a brass nozzle that is slightly tweaked Simgot target called the 2023 target. All 3 nozzles influence the tonal character, imaging and treble related to the area it affects.

Sound character is more tuned for energetic balance, as harmon tuned IEMs goes. What makes the EA1000 stand out for me however is just how resolving the sound is vs your garden variety single dynamic offerings. When I say detailed I mean out of the ordinary, highly technically detailed. Trebles that shimmer and sparkle all over the place added with precision. Imaging that is enhanced with above average sound separation that pops when you hear your favorites. It will make you wonder if you're hearing a single dynamic IEM vs highly detailed multiBA IEM. It will surprise you just how resolving and detailed the EA1000 is. Fairly big spacious sound presentation on top of all that detail to boot.

However not all is perfect on the EA1000 land. The sound might come off a bit too detailed regardless of nozzles used. I know that sounds like sound fatigue and it can be based on your sensibilities for upper mids and treble presence. All 3 nozzles have some healthy pinna gain/ upper mids with full extended trebles. This is the area I wished Simgot would have provided a greater variety for tunings instead of doing 3 different versions of what is essentially harmon tunings. I find the harmon 2019 red tuning nozzle to be the most agreeable for my own likes, however even with this filter, rock and metal music can sound a bit glary/ edgy noticed in the treble area, which clearly comes through during drum solos with a lot of crash symbols going on. This is the reason why I bring up mention of a tuning nozzle kit that was made for what was essentially the same issue for the EA500.

So I get why the harmon tuning is so popular and most Asian folks are not going to be listening to rock or metal music so there is that. They do however listen to a lot of female vocals and I feel harmon tunings play a pivotal role in portraying vocal performances catered more for Asian sensibilities. Especially female vocals. Ample pinna gain will get you some “Female poison” look that up if you don’t know what that is.

Back to the sound profile of the EA1000.
Regardless of the tunings on the EA1000, it has to be one of the most resolving single dynamic IEMS in the market at anywhere near its price point. I say this with confidence as I have heard and own numerous dynamics at the price point that don’t resolve like the EA1000. If you're willing to play with some aftermarket cables, tips and even go as far as trying out a nozzle filter kit for the EA1000. You will be rewarded with one of if not the absolute best you can buy at this price point. Simgot got something special with the EA1000 and yes it takes a bit of trial and error but I will get into more of those aspects later on in this read.

The EA500/EA1000 tuning kit that you can buy from Simgot provides an empty nozzle. 3 different nozzle meshes with different densities and two tuning insert foams to tweak the sound nozzle for some personalized modding goodness. The idea with this kit is to lower the upper mids and trebles from the stock tunings on the EA1000. My friendly advice for folks that get either of the EA500 or the EA1000 is to invest a bit into this kit. I was able to use this kit to get a better tonal balanced sound from the EA1000 and it was as easy as throwing in one of the foams inside the gold filter nozzle. There is literally no effort of taking off anything, you're just adding a foam piece underneath into the nozzle tube, installing the newly modded nozzle and taking a good listen.

I know by now you're thinking. Why should I buy a tuning kit for a $220 IEM? Again all this is subjective and will depend on your hearing sensibilities. If you are the type that values clarity and a highly resolving level of details in your sound then no filter mod really needed but if you want the absolute best tonal balance from the EA1000 you will understand why I mention that filter mod. My review here is based on the 2019 harmon nozzle.

Sound profile.
As harmon tuned IEMs goes. It's mostly a balanced tuning and has supreme clarity especially noticed for the upper regions of its sound profile. The EA1000 also pulls some astonishing details for the mids and low end bass as well. It is perhaps one of the most technical sounding single dynamic IEMs in the market at its price point. Imaging, sound separation, both macro and micro details all stand out. It has a moderate body of note, similar to the EA500 but even better as the imaging and layering stands out fantastically for the EA1000.

Trebles. Harmon tunings with ample 10dbs of pinna gain/ upper mids itself brings clarity to the overall tonal character for the EA1000 but then there are some deliberate treble peaks that bring even more highlighted treble to the sound. Then the fact that Simgot is using a highly resolving driver in the mix and you get a clear upgrade in the detail department for sound vs their EA500. It's more than just the trebles that show how resolving the EA1000 is, it's the entire sound profile. Its trebles are notable as it is so detailed it stands well separated from the mids and this is coming from a single dynamic. Usually for this type of stand out extended treble to take place for a sound profile, we are talking about multiple drivers and or drivers just dedicated for trebles.

This is how resolving the trebles are for the EA1000. It's got a very clean clear crisp note to the trebles with ample shimmer/ sparkle when called for. Trebles are highlighted from just about every track you're listening to and so it will be track dependent on how you feel the treble plays here. I do appreciate a full treble note and the EA1000 delivers on all fronts for trebles. It has to be one of the most detailed tactile treble ends for a single dynamic but at the same time this causes a touch of glare for the treble notes that can cause you to FF some tracks. Specifically crash cymbals from drum sets and how much emphasis that has. The harmon 2019 has the least amount of upper mids emphasis out of the 3 tuning nozzles to my ears so it was the one that was installed by default and the one I like the most. However even with this nozzle there is a touch of hotness. Its detailed treble aspect will be the point of contention but for what it is. There is no question the trebles show just how resolving the EA1000 is.


Continuing on the detailed theme of the trebles. The mids get its share of auditory definition. Mids tonal balance and timbre here is where they remind me a lot of the EA500 but done with an upgraded technical level. Specifically its sound separation and imaging is clearly a stand out on the EA1000. Mids have accurate tonal and timbral aspects but what makes the EA1000 stand out is how well it does with sound layering and that precise imaging. Mids is a strong suite for the EA1000 with a dimensional accurate sound all within a moderate wide spacious stage. You love some detailed mids presentations for your dynamic sound? The EA1000 provides this in spades. I find the mids especially engaging with the EA1000 played through a desktop amp/ dac or with some power behind it. My Fiio K9 pro ESS my Ibasso DX300Max. The EA1000 sounds spectacular with better quality sources.

Vocal and instrumental textures for the mid bands are solid as is its timbral accuracy but its tonality can shift a bit with use of the other two tuning nozzles. It isn’t that the sound becomes brighter per se but upper mid harmonics become a key ingredient for both vocal and instrumental presence. The other two filters have a bit extra in the upper mids and treble area, it will clearly be noticeable especially if you listen to rock and metal music where there are a lot of crash cymbals and screaming going on. If you ever wonder how you test for treble glare. Listen to some RUSH and check out the drum work of Neal Peart. You find yourself lowering the volume or even worse wincing due to the sharp crash cymbals. There is a bit too much treble in the mix. How does that affect the mids? Well that means you will end up lowering the volume you like to listen to your music with. It's good not to blast music into your ears but I found myself lowering the volume on the tracks I listen to.

Mids can lean a bit analytical at times but this is again using its included nozzle filter sets. If you want to shift the tonal qualities to be a bit warm and musical I have seen new photos of an actual EA1000 filter set, I suppose is very similar to the EA500 filter set. Don’t be afraid to experiment with these filters as it will get you what you're looking for. While you lose a bit of that treble articulation and shimmer, it won't cause you to lower your volume in the same token.

The mids comes clean with a lot of details but it would have been good to see Simgot actually do a moderate pinna gain at 7-8dbs and a slight reduction of the trebles using one of their nozzles for better tonal balancing. I can understand the basis for their Simgot harmon tuning. It has the most upper mids and trebles out of the 3 nozzles. These are basically the Asian influence of the harmon tuning for female vocals and it does that just fine but this causes an upper harmonics swing that will make listening to anything with brighter instruments sound even brighter.

Why the criticism? Well because these get so darn close to becoming a giant killer. There I said it. The driver potential here is immense. Its detail ability I can say is unique among single dynamics. Yet it was tuned for “more detail” I would have preferred more natural with that “more detail.” to be completely honest and let the driver take care of the details vs the tuning. I do know how the EA1000 sounds like with optimal filters, cables and tips.. 3 things that don’t come inside the box for the EA1000 when you buy them. Let me put it this way if Simgot threw in a toned down harmon nozzle, a nicely resolving pure copper cable and at least 3 more sets of tips? Then we are talking benchmark IEM and a serious giant killer. As they are, they leave you to modify and tune them yourself. Is it still worth tracking down a set for your collection? ABSOLUTELY. There is nothing that comes close to the resolve of the EA1000 at its price. I own flagship dynamics from both Fiio and Dunu that cost exponentially more that these hang with when it comes to sheer details. And all it takes is a bit of DIY that a child could do to make them sound tonally correct and you got yourself a crazy deal of an IEM.

Bass is interesting in a good way. The 6mm passive radiator used on the EA1000 supposedly enhances its bass performance and I don’t know if it is due to the drivers and the dual magnets or this passive radiator doing its job or perhaps a combination of all of it but it will be the bass quality that will surprise you here. For a single IEM to have this type of bass definition is remarkable. I own pure Beryllium flagship dynamics that the bass texture here competes with. The EA1000 bass definition is some of the best I have heard from a single dynamic. Its quantity is moderate but its quality lives up to just how resolving the entire sound is. Bass has excellent texture, can be impactful when called for and is nicely controlled with good speed. It's never the sloppy slow type bass but one that sounds remarkably accurate given the type of track you're listening to. Given the entire sound is so highly technical it does not surprise me that the bass unto itself is also technical. Its low sub rumble is addictive just wish there was just a bit more emphasis for both mid to lower bass otherwise I can’t complain about the bass here. It digs deep with very good tactile rumble when called for and has an excellent textured bass end. Bass is nimble, speedy, tight and definitely adequate. There must be something to that passive radiator that brings a solid bass end to the EA1000. If you own amps with bass boost. These sound marvelous with a bit of a boost, highly recommend giving that a try.

Overall the EA1000 gets soo very close to becoming one of those IEM that don't come around too often in the industry. So very close to being a killer of giants. But it requires a different cable, your very best tips and a easy DIY filter mod to actually fully realize their potential. I do applaud Simgot for realizing that a filter mod was needed and hence provides one for sale.

But then it would have been so much easier if they made one of the filters to not have so much upper mids and trebles in the first place. I know my review here might turn off potential adaptors for the EA1000.. But then you will be missing out. The EA1000 just due to its sheer resolving sound profile is a sound you have to hear to believe. Even better once you get them with the right tonal balanced using said filter mod. Without it I would give these a good 4.5 stars for Simgot giving the consumer a highly resolving driver and tech behind its sound profile. I have to admit the EA1000 stands out among other single dynamic offerings. But then I would give it a solid 5 star if just one of its nozzle filters was provided with a more smoother musical listening experience for a nice contrast to the other two nozzles provided. Just saying.

Otherwise. The prize goes to the bold and the EA1000 is just this. Thanks for taking the time to read.
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Gracias ,precisamente es justo la que para mi es la debilidad de los EA1000 ,la estridencia de los agudos y la falta de campo sonoro(aunque este se nota menos),donde me recomiendas que lo compre? saludos
You can get the Simgot LC7 cable on linsoul store here
If you want a cheaper way of lowering the treble and upper mids. You can try this kit that reduces upper mids and trebles

The idea is to use one of the foams underneath one of the tuning filters. I use a foam piece under the brass nozzle and that brings down the treble even more effective vs using cables. Not to mention cheaper. Try this nozzle kit.
I wanted to know how far these Simgots went, so I listened to you and not only bought the set of pads and mouthpieces but also the LC7 and the ISN G4 and for me clearly the winner is the LC7, it improves clarity in all areas except the field sound, which is where the G4 wins along with the body in the notes. The set of meshes and mouthpieces is too dark for me.
Thanks buddy


Headphoneus Supremus
Simgot EA1000 Fermat
Pros: Resolving
Build quality
Nice design
Energetic tuning
Lovely bass texture
Organic midrange
Well extended and airy treble
Small shell
Stock cable and tips are nice
Cons: Energetic upper mids, can be to much for many
Short nozzle so its very tip dependent
Not very ergonomic, falls out over time
Cable while nice should have been also offered in balanced
Soundstage is just average

Simgot EA1000 Fermat


The EA1000 I got for free in return for a written review online, thanks Simgot and @FiaLm

All impressions are my own subjective thoughts, after having used EA1000 for some weeks.
This is also a very subjective hobby where everything from experience, anatomy or age will affect what we hear. Also keep in mind that it is easy to use bold words when talking about differences, while it may be perceived as a small change for you. While I can perceive something as natural sounding, I do believe we can never get a perfect performance similar to what is achieved live.

Ranking System:
1 Very bad or unlistenable
2 Listenable but not good
3 Average
4 Very good
5 Exceptional or having a special sauce


About me and my gear used for the review

My audio preference is neutral with increased low end, mids can be forward but not too much. I can also handle some treble spikes if it is not excessive. I am a believer in having different tuned IEMs for different genres or moods instead of chasing the single perfect one.
Main music genres I listen to are Metal, Electronica, Jazz, Indy rock/metal, R&B, Pop. I am a music lover, and can also listen to almost all the genres out there. I have been into music gear since the mid 90s, gifted some big speakers at an early age. Then moved more and more into headphones with the Koss Porta Pro and a Sony Discman and Minidisc.

I have also tried playing many instruments over the years from piano to sax and have a feel for what's a natural tone, but not the biggest patience in learning to play. My wife has also played many instruments from string to wind instruments and also piano.

My current standard in Headphones is ZMF Verite and Beyerdynamic T1 G2.

My current favorites in IEMs are AüR Audio Neon Pro, Sound Rhyme DTE900 and 634ears Miroak-II. The NEON Pro has 10 BAs, and has a near perfect tonality for me on the brighter side. DTE900 is a tribrid with 1+4+4 config, tuned W shape being energetic and lush. Miroak-II is my favorite single DD, it has a warm and bassy sound that is also very natural sounding.

Gear used in the main rig is Topping E70 DAC together with the Topping A90 Discrete headphone Amp. I also have a Schiit Lokuis I can swap in if I want to do a little analogue EQ.
Portable gear used during the review is HIBY R6 Pro 2, Penon Tail, FIIO BTR7.
I have a good range of cables from ISN, Penon, NiceHCK, XINHS, DUNU, Effect Audio and Gladiator Cables.


So what is Simgot EA1000 Fermat

Simgot is a brand based in China and Linsoul is the main seller of Simgot products.
The EA1000 is their newest single dynamic driver IEM that also has a passive radiator implemented. It uses a 10mm dual magnetic driver, which is fast and technical.
Simgot EA1000 follows similar tuning as the models before, it has proven a success that many love.

The shell is made in metal with a faceplate that looks like glass, very solid built and feels and looks premium. The cable socket is 2 pin with a small recessed insert, and the provided cable fits perfectly and matches the aesthetics of the IEM.

The whole package is well thought out and gives a nice presentation and opening experience, and the whole Fermat theorem is a nice touch. While I must admit I haven't delved into why they have it as a part of their marketing.

The EA1000 also has the same nozzle system as the EA500, they provide 3 pairs of nozzles with some minor differences in sound.

What is more interesting is that it's easy to mod with filter and foam to tame the upper energy.

Comfort needs to be mentioned, the nozzles are short/average and in combination with a not so ergonomic shell make it a bad fit for me. I have large ears and the ear cavity where the tips sit are fairly deep, so the body of the IEM hits the concha and makes it rather hard at getting a good seal. With correct tips it's almost solved, but I still have to readjust and push them in now and then.


Taken from the product listing:

Technical Details​


10mm dual-magnetic-circuit & dual-cavity structure dynamic


High Purity Silver-Plated OFC Litz Structure

Connectors Type​

Detachable 0.78mm 2Pin


$219.99 USD








First off, what is Timbre?
From the Wikipedia:
The Acoustical Society of America (ASA) Acoustical Terminology definition 12.09 of timbre describes it as "that attribute of auditory sensation which enables a listener to judge that two nonidentical sounds, similarly presented and having the same loudness and pitch, are dissimilar", adding, "Timbre depends primarily upon the frequency spectrum, although it also depends upon the sound pressure and the temporal characteristics of the sound"

First minutes of trying a new set of gear, what I always listen to is how natural and musical it sounds. Much of this goes down to how I perceive the timbre.

The Simgot EA1000 has a natural sound, that is on the energetic side. In short I would call it balanced but it's slightly too bright for that, even so it balances the energy pretty well without being too shouty.
But I can not deny the pina gain being on the border of what I prefer, it can at times make certain songs have a metallic tendency similar to EA500 but less.

I have tried all the nozzles and the change is small, I have just gone with the red nozzle as it has the most forgiving upper range and the most bass.

Going to use the ranges here in review:


Measurement by Paul Wasabi.


Details and soundstage

The EA1000 is very resolving, and might be the most resolving single DD in its price range. We can call it single DD due to the passive radiators not counted as a driver.
Be it bass, mids or the highs it delivers much details on all ranges.

Soundstage is open with good layering, nothing revolutionary but not bad either. I would categorize the soundstage as average in depth and height, while it excels at separation and imaging.


The EA1000 low range is very impressive, I do think that the combination of a good driver and the passive radiator adds something extra to the bass. It's almost hard to explain, but it has a very natural sound. The EA1000 can both slam and rumble with authority, speed also slightly on the fast side. A few more dB in the sub bass would have been appreciated for me, but overall the tuning is very nicely done here. It also has the glide style of increasing from the lower mids into the bass, the style I prefer.


Yes, this is the first Simgot where I have been more pleased with midrange. Same as the bass range it has a more organic and natural way of presenting both vocals and instruments.

The upper mids are forward, and for some it might be too much. I had more problems with this on earlier Simgot models, so either I have gotten used to it or the EA1000 does it better. Even if they all measure very similarly.

Male vocal sounds better than female, as the female ones could have had more clarity. I still rate it highly for both, just some nit picking.


The high range is forward and detailed, but not overly much. Some of this due to also the upper mids being forward, so they balance each other out in energy. You can hear some nice sparkle on cymbals, and violins will have good presence and clarity.

It's still on the more technical side with an analytical type of treble, maybe too much for some.

The EA1000 also has plenty of air, maybe too much.



A small part about what gear I have been enjoying the most with the EA1000.

Most of my listening has been done with HIBY R6 Pro 2 and Topping E70/A90 Discrete, my favorite pairing being R6P2.

Tips have been a difficult thing, due to nozzles being short compared to the flat body of the shell. I need to readjust the IEMs often, so tips with longer stems work the best and the ones with more grippy texture. I have some stock tips from an unknown package that has worked the best, with Spinfit CP100 being close second.

Stock cable is good already, but lacks the 4.4mm that I prefer to use. I don't find it changes much with better cables, so my favorite has been some 16core copper XINHS cable as it's soft and helps with securing the fit.



I will just talk about some of the music I like, the music I use here are some of my reference tracks and also just some I like. When I am listening to music and not evaluating, I prefer to listen to whole albums. When comparing EA1000 to other sets I have used the tracks listed here and more. Most of my listening has been through my own files from Bandcamp or Tidal.

Billie Elish - No Time To Die

The theme song for the James Bond movie No Time To Die.
Billie Eilish is the vocalist, the Orchestral part is done by Hans Zimmer Orchestra and produced by Finneas O'Connell and Stephen Lipson. It have a high production quality and more than good enough to evaluate vocals and dynamics.

Billie Eilish was only 17 years old here and the youngest ever in a James Bond theme song, she was praised by Hans for having an intimate and emotional voice.
The track starts slow with just a subtle piano and gets even more slow when Billie enters, she sings carefully with lots of emotion. And crescendos up more and more over the course of the track, also why I say it has great dynamic range here.

The more dark voice of Billie suits the EA1000, no problem showing everything and even giving some goosebumps.

Earthspace - When We Feel Strange

Some sort of electronic psy genre, there are so many categories that i'm lost these days. But the track features speed and rhythm that is quite technical, has lots of elements happening all at once and can make some sets to start to sweat.

And yes EA1000 can play this with ease, it never feels slow or congested. Remains open and clear on all parts, with great separation and dynamic range of it all. I would have liked more bass to make it less energetic, but this is a personal opinion.

If there are any downsides with EA1000 and music like this, it's the resolving capability and forward upper mids. Some electronic music is super clean but some also don't have the best samples used in their sounds, and the more resolving the more apparent this can be. While this track is pretty good I could have preferred EA1000 to be less energetic.

Seatbelts - Tank!

The soundtrack of the beloved anime series COWBOY BEPOP, the Tank! Is an intense one opposing song. Written by Yoko Kanno and performed by Seatbelts, a big band jazz piece with latin infused hard bop style.

The piece has some impressive and forward alto sax playing, and is great for me to listen to sax tonality and if it's too forward sounding or not. The rhythm part is done by double bass and bongo drums.

The opening with the buzzing double bass is very prominent and detailed, and is actually more prevalent here than EA500. The bongo drums accompanied has a nice tone to them, just lacking a little body.

Teh sax is very nicely done, not too hot and fatiguing. Juist just at the edge where it's very detailed and open.

Jinjer - Pisces

Awesome track by Jinjer, and yes the vocalist is female and does the growling also. Just an overall nice track to test dynamic range and how it handles slightly complex metal.

Jinjer opens with a more melodic opening with beautiful vocals, EA1000 shows more than enough expressions in her voice. And the instruments are clear and nuanced also, the drums have a nice tactile feel. The cymbals also have some nice zing to them.

Then going into the hard part, she remains very clear and it's easy to listen to her growling and instruments without it sounding congested or metallic.

Fink - Trouble’s What You’re In - Live from Union Chapel, London

Incredibly nice live recording, Fink has an amazing voice. The simple but nuanced track has very few instruments, but the harmony of it all is very special and full sounding.

The EA1000 has great texture and body to his voice, and also very resolving showing his vibrato or breathiness. Personally I prefer more mid bass to \\give him more fullness, but this presentation is very correct and transparent sounding.

The drumming and guitar together with his voice has a sort of euphonic presentation, very addictive.




Simgot EA500

The EA500 is the model that made Simgot well known, it's also a single DD. Having a high resolving driver that is really fast and nuanced, more or less unbeatable in performance at its price point. Also has the nozzle system, and is easy to mod.

To make it more correct, I changed back to normal filters that are not modded on EA500.

The metal build is almost the same as EA1000 except for the faceplate, this also goes for the ergonomics. Price is at 70-80 usd depending on sale or not.

Bass is more natural and is felt slightly more in EA1000 than EA500, EA500 already had very good bass performance but lacked in amount. So yes you can say that EA1000 has taken EA500 and improved it, making it more natural and fun. If it's due to the passive radiator or just what type of driver I am curious about.

Mids is outstanding om EA1000, before EA1000 I have not been totally impressed by the midrange of Simgot. Models before sounded too sterile and cold, this on both instruments and vocals lacked soul. I hate to use this word, but the midrange is more organic and natural now with EA1000. EA500 has a sort of metallic sound to some instruments and sounds. This can sometimes also appear on EA1000 but it's up to the recording if it's exaggerated.
Treble more detailed and clear, having also more air.
As I said the EA500 in stock form had a sort of metallic and cold tonality, there is not as much of this with EA1000. Much of this was solved by modding with filter and foam in my EA500.
But even when modded, the EA500 can't touch the EA1000. Remember the changes are not day and night, but it's still I find the price jump justified.


Simgot EM6L

The EM6L is also one of the recent releases from Simgot, it is a hybrid with 1 DD and 4BA.
It is also tuned almost the same as EA500 and EA1000, but due to driver config it also sounds different.

The build here is in plastic instead of metal, and it doesn't feel and look as premium as the other two. The nozzle is similar in size but is not exchangeable and glued in place, the good part is that it has slightly better angle and length. I still don't get the best fit, but it's better than the EA1000. Price is at 90-120 usd depending on sale or not.

Bass is of lower quality than EA1000, but it also extends better and some sub bass rumble is more noticeable. The bass just feels slower and less resolving than EA1000 and also EA500.

Mids is also quite different has a sort of softer tone, most likely due to BA. On some music I really like this and it makes it more forgiving, but on some albums it's also more edgy and sharp.
I think most of this is due to some of the tuning in the upper midrange that especially affects some ranges of the piano or some brass instruments.

Treble is slightly less resolving and airy than EA1000, also at times a little unnatural and sharp.

Soundstage is actually above the EA1000 and EA500, but remember soundstage is very personal. As for imaging how easy it is to position everything is below EA1000 and more similar to EA500.

Overall the sound is softer and less resolving than the other two.

The spider chart is slightly exaggerated on some points to show differences.




So what do I think after all this about the Simgot EA1000 Fermat , they have another winner in its price range. It's not as revolutionary as EA500 was for its price range, but it still remains a good contender where it's priced.

If you love your EA500 and want something that is an improvement this is the way to go, but if you had any of the problems I mentioned about fit this is the same. And even if the upper midrange is now better, it's still forward and aggressive.

The EA1000 sound is very addictive and fun to listen to, the balance of energy and resolution is just right and not tiresome. And the touch of organic element it brings to acoustic music is excellent, if it's due to the passive radiator or driver itself don't matter for me. Something they have done does make music very enjoyable especially in the low and midrange.
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sweet review of the EA500


New Head-Fier
SIMGOT EA1000 review of hybrid iem by ICYGENIUS 🎧
Pros: The quality and workmanship is excellent
The cable is good and does not need to be replaced
Fit and comfort are excellent
The most technical headphones I've ever listened to, it's pure madness
Very emotional and detailed sound
Very transparent and airy flow
Soundstage has excellent depth and width
Bass has insanely good control and attack
Texture processing is transparent, and bass saturation and distortion are reproduced at an excellent high level
High frequencies are quite analytical and airy and do not have sibilants
Crazy analytical, the music is literally in your possession.
Cons: For me the tone is a little bright without using a nozzle filter, use 300mesh to fix that.
Hello friends!
Today we’ll talk about new hybrid headphones from SIMGOT, the model is called EA1000 and their cost is $219!

And they come in a very attractive, well-designed medium-sized box, and on the front here in the frame there is the inscription the last theorem of Fermat!

Well, here at the back there are three frequency response graphs of headphones with different replaceable complete nozzles, the first is Target Simgot 2023 with a gold nozzle, the second red is the already familiar Target Harman 2019 with a silver nozzle and a red silicone rubber band, and the third blue is a classic Simgot Target using a silver nozzle with a black silicone rubber band, and as always, the technical characteristics are immediately indicated and 1 dynamic driver 1 and a passive radiator are responsible for the sound, and the sensitivity of the headphones is 127dB and they received 16ohm impedance!

Let's take a look at what's included!


The headphones themselves are very securely fixed here, and they look very good. Let's look at them in more detail.
They have a metal body that still collects prints, of course, but nevertheless literally attracts the eye to itself, because they really look very elegant and tasteful, and as you probably noticed there is a logo of the company Simgot on the front part, and the hidden inscription Fermat here below.


And of course they got a good and time-tested 2pin connector that is slightly recessed into the case, and on the inside of the earphone there is a marking of the right and left channels, and a metal mesh is visible, and there are also two acoustic holes, one of which is quite close to this nozzle, which can be unscrewed and changed to either of the other two.
Ergonomics and convenience!
The fit of these headphones is excellent, quite tight and they fit well to the ear, so there are no problems with sound insulation!


In the smallest box there are replaceable nozzles, one of them is gold and has a transparent elastic band, and the other is silver and has a black elastic band and spongy material inside, personally I used a complete nozzle with a red elastic band, but I pasted an additional black filter on top of it, and I'll explain later why I did it.

In the box with the inscription storage box is of course, here is a really very good and strong case inside which there is an excellent cable that received a 3.5 jack connector and 2pins for connecting to headphones,i really liked it very much.


And in the last slightly larger box, there is a very good set of ear pads that can be used without problems, and additional elastic bands for use with nozzles, and here are such large instructions.


How do these headphones sound?
Well, now friends, let's talk about the most important thing, namely the sound of this model!
And this is what their frequency response graph looks like: there is a moderate amount of bass with a good entry into the mid-range, and a smooth transition to the upper mid-range with high frequencies that received a little emphasis, and upon first listening you immediately notice detail, attacks, transients, a lot of air, and a very transparent and ultra-analytical presentation that I have not seen for a long time, and these headphones literally pull out all the nuances in the music.

Low Frequencies:
Well, let's start with an analysis of the low frequencies, where the headphones demonstrate a very precise and accurate and correct rise with a slight emphasis on the sub-bass, which has excellent weight and volume filling the space, and I was very pleased with the smooth and clearly controlled transition to mid-bass, due to which the bass is perfectly controlled and literally allows the mid frequencies to breathe and open up without interfering with them at all.
The midbass here is presented as quite dense and collected and with a very clearly defined attack and good textural elaboration, and it’s worth saying that despite the fact that this is not a basshead model, I was very pleased to listen to electronic music and hip-hop genres, where first of all you need a good and pumping low end, of course, without obvious dominance over other frequencies, as this is especially happens in basshead models.

Mid Frequencies:
Well, the mids in these headphones are literally what you need, they are very transparent and clearly focused in space, but they feel a little light, but nevertheless I would say that this is literally their calling card, there is a great airiness here that makes everything sound clear separate and detailed on overtones, there is no box effect or closed dark space,and this entire range literally breathes, and despite the fact that it is quite smooth, it did not get excessive obvious monitoring and dryness because of this, but on the contrary, everything sounds quite emotional and exciting.
But the vocal part, both male and female vocals, is presented to us as very clean and incredibly transparent and clear, and of course it’s worth saying that it’s immediately noticeable that the vocals focus attention on themselves and are brought forward along with the drum part and everything sounds literally next to you and this gives very nice immersive effect
but what I have to tell you is that the upper middle area is quite bright for me out of the box, so I used an additional filter that weakened this excessive emphasis, but for example, I can’t know exactly how it will be in your case since perhaps someone will not even have to glue a filter here and will be satisfied with such a brighter presentation, since I know for sure that there are many such fans.
High Frequencies:
Well, as for high frequencies, they have a very good and correct approach to tuning, there is also a very pronounced technicality and there is an insane bias towards analytics due to which we have excellent separation of cymbals and percussion in this range, and of course it’s worth to say that the headphones are perfect for heavy and high-speed genres that require a good dedicated attack and a small but pleasant-to-hear underscore of the cymbals and I’m glad that they don’t merge the sound into a single whole, but on the contrary, all the cymbals at the top and each long aftersound sounds very detailed and separate, that is, the images are not lost in the mix and are drawn very accurately and legibly, the analytics here are really at their best, fans of this kind of presentation they will definitely be pleased.
Stage and stereo panorama:

In Simgot Ea1000 everything is in perfect order here, the stage itself is quite wide and optimal, it does not have artificial stretch, it is exactly correct and at the same time has an excellent slope in depth, that is, the space and instruments do not feel flat, but on the contrary, they have good weight and volume , and all the images are drawn in great detail and separately from each other.
My conclusion on these headphones:
SIMGOT EA1000 turned out to be excellent attacking, detailed and incredibly technical headphones that you will definitely remember for a long time, that truly amazing new product.
Link where you can buy them!

Icygenius was with you, I will be glad if you subscribe to my YouTube channel and watch this full review on SIMGOT EA1000 !
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Thanks for another review mate, I like how you approach this case and do it in such detail.