Simgot EA1000 "Fermat" In-Ear Monitor

Disclaimer:
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:
Red: 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:
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.

Treble:
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,
youtube.com/@AudioReviewsDownunder
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.

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.

Conclusions:

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.

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.

Conclusion​

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.

NOTES:

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.

SPECS:
• 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



BUILD, FIT & QUALITY:

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.









SOUND:

BASS:

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.

MIDRANGE:

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.

TREBLE:

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.



CONCLUSION:

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.

General/Packaging/Build/Comfort
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

Foreword
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.

Bass

• 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

Mids

• 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 )

Treble

• 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

Soundstage/Imaging

• 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

Driveability

• 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

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.

Bass​

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.

Midrange​

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.

Treble​

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.

Technicalities​

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.

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.

Sound:

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.


Bass:

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.

Mids:

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.


Treble:

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.


Technicalities:

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.


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.



Conclusion:

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.

Simgot EA1000 Fermat

"More of everything"


DISCLAIMER:


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



WHAT’S IN THE BOX?


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.




BUILD and COMFORT


- 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.




SETUP:

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

-stock cable

-stock eartips




SOUND PROFILE


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.




PROS

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



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



SCORING

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


TUNING - 2.5

BASS - 3.5

MIDS - 3

TREBLE - 2.5

TECHS - 3


P.P SCORE = 14.5


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



Check my scoring here :


https://docs.google.com/spreadsheets/d/15WhgCgiMzWfF3ccgB8SK5-Cg7m87kpIShtxsyg2u-AI/edit?usp=sharing



GRAB SCORE:

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


- I will never touch this again


- I grab if I remember


- Can be part of my rotation


- I break my rotation and grab this one today


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


- 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.


COMPARISONS


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.


Mega5p

-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.


Planars

- 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.




FINAL THOUGHTS


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.





==========================

WHERE TO BUY: non affiliate links


https://www.linsoul.com/products/simgot-ea1000-fermat


MY LIBRARY:

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:


Rock-Alternative-Metal

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


POP:

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


OTHERS:

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.

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:

Tuning: 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.

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.

𝐒𝐩𝐞𝐜𝐬:
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.

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.

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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

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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.


Bass-


- 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.


Mids-


- 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.


Treble-


- 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


Technalities:-

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


Soundstage:-

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.


Imaging:-

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.

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Recommendation:-


- 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.

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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

TONALITY: 7.8/10
TECHNICALITIES: 9.2/10
TIMBRE: 7.5/10
SOUNDSTAGE: 8.2/10
IMAGIN: 9/10
CONSTRUCTION: 9/10
ACCESSORIES: 8.5/10
SOUND VALUE: 8.8/10


INTRO

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&ACCESSORIES



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!)




SOUND IMPRESSIONS




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.

COMPARISONS



VS SIMGOT EA500

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.


VS SONICMEMORY SM2

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…



CONCLUSION



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:

Very HIGHLY RECOMMENDED!!!







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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: https://penonaudio.com/SIMGOT-EA1000 .html

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.

Mids
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.

Simgot EA1000 Fermat

Disclaimer

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​

Drivers​

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

Cable​

High Purity Silver-Plated OFC Litz Structure

Connectors Type​

Detachable 0.78mm 2Pin

PRICE​

$219.99 USD

https://www.linsoul.com/products/simgot-ea1000-fermat




Timbre

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.

Bass

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.

Mids

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.

Treble

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.



Synergies

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.




Music

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.



Comparisons



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.





Conclusion

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.

Introduction!
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!
Accessories!

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!
Aliexpress: https://aliexpress.ru/item/1005006163441706.html
LINSOUL: https://www.linsoul.com/products/simgot-ea1000-fermat
Icygenius was with you, I will be glad if you subscribe to my YouTube channel and watch this full review on SIMGOT EA1000 !

DISCLAIMER

I would like to thank Simgot for providing the EA1000 Fermat.

It can be gotten here: https://www.linsoul.com/products/simgot-ea1000-fermat or https://samaudiosg.com/collections/all-products/products/sg-simgot-ea1000-fermat-flagship-dynamic-driver-iem (no affiliate links).




SPECIFICATIONS

• Driver configuration: 10mm dynamic driver (DD) + passive radiator (PR) driver
• Impedance: 38 Ω
• Frequency response: 20 Hz - 20 kHz
• Sensitivity: 127 dB/Vrms
• Cable: 2-pin, 0.78 mm; silver-plated OFC Litz cable
• Tested at $219.99 USD

ACCESSORIES



Other than the IEM, these are included:
- 6 pairs of silicone eartips
- 3 pairs of tuning nozzles
- Nozzle rings
- Cable
- Carrying case

For a $200ish set, the accessories are acceptable, though there is a glaring lack of eartip variety. Gear at this price bracket also may incorporate a modular cable, which is absent here.




6 pairs of silicone tips are included (there are duplicates of S/M/L sizes). These silicone tips are pretty serviceable, though there are no foam tips.




The tuning nozzles add versatility to the tonality, and they operate via a screw-on mechanism. We will talk more about them in the following sections. Nozzle identifier rings are also included as a nice touch, to identify the sides.




The stock cable is a silver-plated OFC Litz cable. This is unfortunately not modular, but is very nice haptically. It is well-braided with a chin cinch, with minimal microphonics. 2-pin cables are always my preference due to horrible experiences with dodgy MMCX connectors.




A silver leatherette case completes the accessory line-up. This case is semi-rigid, and has a magnetic clasp. The innards are soft and lined with webbing.

The rest of this review was done with the stock cable and stock silicone tips. No aftermarket accessories were used, so as not to add any confounders to the sound.


BUILD/COMFORT



The shells are a real looker, featuring a mirror-like metal surface, with a crystal faceplate. Build is very solid, though the shells can potentially be scratch magnets or fingerprint magnets, so do baby them.




Weighing in at about 11 g apiece, the shells are extremely ergonomic and well fitting, with no weird protrusions on the inner aspects to poke the ears. I could wear the EA1000 for hours without discomfort.

Incorporating vents, isolation is below average. Thankfully, I did not encounter any driver flex on my pair.




DRIVABILITY

I tested the EA1000 with the following sources:
- Apple dongle
- Cayin RU7
- Fiio K11 DAC/amp
- Fiio KA13 dongle
- Hiby R3 Pro Saber 2022 DAP
- Khadas Tone Board -> Schiit Asgard 3 amp
- Questyle M15 DAC/AMP dongle
- Sony Walkman NW A-55 DAP (Walkman One WM1Z Plus v2 Mod)
- Sony Walkman NW A-55 DAP (Walkman One Neutral Mod)
- Sony Walkman NW WM1A DAP (Walkman One WM1Z Plus v2 Mod)
- Smartphone

The Fermat is easily driven even off the weakest of sources.


INTERNALS/TUNING NOZZLES

The EA1000's engine is a unique DD + passive radiator (PR) setup.

A second-generation dual magnetic and dual chamber 10 mm full-range dynamic driver with a 6 mm composite diaphragm is the main workhorse. Simgot advertises that it was manufactured via sputter-deposition technology, and this diaphragm is optimized to generate a high magnetic flux.




The addition of a PR - which can be seen above on the "R" and "L" markings of the shell - is supposed to improve bass texturing and heft. Indeed, on listening, the bass is toned, with solid quality and timbre.

This IEM's selling point is the 3 tuning nozzles, which have different damping and cavity materials.



As such, they vary the sonics along a spectrum of Harmanish tonalities, subtly affecting the upper mids and lower treble:

Graph of the Simgot EA1000 via IEC711 coupler. 8 kHz is a coupler peak.

The black nozzle bestows the brightest tuning, with the thinnest note weight. Trebleheads will love this configuration, though it is not for the treble-sensitive. Technicalities are understandably the best with this setup.

The gold nozzle is a bit sharp at the upper mids, but the treble tails off the most thereafter. Vocalheads may appreciate this nozzle, though it may sound a bit shouty, especially at louder volumes.

The red nozzle has a more sedate upper mids peak, but has greater treble extension than the gold one. Personally, this is my favourite setup, as it banishes most of the shoutiness away, yet maintains great air and sparkle in the treble.

Do explore the various tuning nozzles on offer and see what suits your sonic palette.


SOUND & TECHNICALITIES

The following impressions will be made with the red nozzle installed.

The EA1000 is mid-bass focused, with the bass just north of neutral. The added PR tech does seem to add some heft to this region, with decent sub-bass extension. However, it isn't a basshead IEM by any means. What the EA1000 cedes in bass quantity, it aces in quality. The bass is well-textured, with solid speed and nimbleness. There is no mid-bass bleed.

The lower midrange is a tinge depressed, but not by too much. Without any big bass encroachment, it is relatively transparent. With the red nozzles on, the upper mids sport a 9ish dB ear gain, which allows vocals to be showcased, without veering too much to shouty territory.

The Fermat's lower treble continues on from the upper mids boost, and thereafter gives great extension into the upper registers, with much air and sparkle heard. There's admittedly slight sibilance, and perhaps our treble-sensitive brethren might want to keep to the gold nozzle in place if treble zing is an issue. Trebleheads will have a field day with the EA1000's extended treble, which adds a lot of resolution to the table.

As discussed, other nozzles may be more zealous in the upper mids and treble, and I feel the red nozzles are the best midpoint of furnishing clarity, without erring to the side of fatigue. However, treble and upper mids perception varies on a few factors, such as hearing health, ear anatomy (pinna gain), eartip choices, volume played at (Fletcher Munson curve) and even sources, so YMMV.



In keeping with its single DD roots, timbral accuracy is spot on, and there should be no complaints in this area.

Amongst the $200ish DD containing sets, the Fermat is arguably class-leading in technicalities and resolution. There's superb transients and clarity, with globs of micro-detail on tap. Imaging is very well done, and soundstage is spacious in all 3 dimensions. This aids in layering and instrument separation, and the EA1000 handles complex tracks and competing riffs with aplomb.

Despite the stellar technical chops, the EA1000 does not commit the cardinal sin of sounding sterile or analytical, which is a really tough line to balance! It is very coherent sounding, and nicely melds the 3Ts of timbre, tonality and technicalities into the soundscape.


COMPARISONS

Comparisons were made with other DD containing gear residing around the $200 USD range.


DUNU Falcon Ultra


Graph of the DUNU Falcon Ultra via IEC711 coupler. 8 kHz is a coupler peak.

The Falcon Ultra has 2 tuning nozzles to provide a pleasant warm Harmanish tone versus a more laid-back bassier fare.

On all tuning nozzles, the EA1000 beats the Falcon Ultra in technical chops - imaging, micro-detailing, soundstage and instrument separation are ahead on the Fermat. The EA1000 also has a tighter and faster bass, with greater treble extension and sparkle.

The Falcon Ultra however, has a thicker note weight with a more relaxing treble/upper midrange. The Falcon Ultra is thus more suited for the treble-sensitive listener or for bass-lovers. Both sets are solid in timbre and are easily driven.

The Falcon Ultra comes with a nicer accessory package, with a modular cable to boot. However, it also has a mirror-like finish that may be prone to smudges and scratches.



Tanchim Oxygen

The venerable Oxygen is the $200 band single DD gatekeeper. It follows the Harman curve, though the Oxygen has more sub-bass. The Oxygen is more sedate in the upper mids/lower treble as compared to the Fermat.

Technicalities go to the EA1000, with the Oxygen lagging slightly behind in soundstage, instrument separation and micro-detailing.

The Oxygen is harder to drive, and it does not have tuning nozzles. The Oxygen is also fussy with fit, due to short stubby nozzles, and some users might need mods of aftermarket longer tips to salvage the fit.


Final Audio E5000

The E5000 is a bullet-shaped single DD which is L-shaped in tonality It has a way more massive bass, and a darker treble. The E5000 has a thicker syrupy note weight, with poorer air and treble extension.

The E5000 is a league behind in technicalities, with a more claustrophobic soundstage, and poorer micro-details and imaging.

The E5000 is one of the most difficult IEMs to drive due to a low sensitivity, and most portable sources cannot do the sonics justice - it is not a matter of volume, but if under driven, the E5000 sounds very bloated and untextured in the bass. The Fermat is a breeze to drive in comparison, with no robust amplification requirements.


CONCLUSIONS



The Fermat may very well turn out to be one of the new $200 range benchmarks for a DD set. Granted, it isn't a pure single DD (due to the addition of a PR which adds to bass texturing and tone), but the EA1000 definitely keeps the strong suits of a single DD such as coherency, timbre, and a natural bass.

Where the Fermat is different - and in a positive way - from the usual single DDs, is in its class-leading technicalities. It handily outperforms the usual gatekeepers like the venerable Tanchjim Oxygen in this department. The spacious soundstage coupled with excellent resolution will bring a smile to detail-heads, with a fast and clean bass, and an airy treble. Many technical sets swerve to the extreme of being sterile or overly analytical, but the EA1000 does not suffer from this, thus preserving musicality in the sonics.

The Fermat has beautiful mirror-like shells, though do watch out for scratches or fingerprints. It is easily driven, and the addition of 3 tuning nozzles for consumers to vary the upper frequencies is invaluable. Speaking about treble, the EA1000 is perhaps not for the treble-sensitive on some nozzles, though tip-rolling or source rolling or playing with the various nozzles might help mitigate this. Foam tips would have been a great addition to tame the treble, but we sadly only have one eartip choice in the packaging.

By and large, the Fermat amalgamates the 3 Ts of tonality, timbre and technicalities into an aesthetically pleasing shell, and is a really solid contender, unless if you are basshead or highly treble-sensitive.

How I review: (See Previous Reviews)
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Model: Simgot EA1000
Price: $219.99 - Linsoul
Review Reference: RC114

Manufacturer Specification:

• Brand: Simgot
• Model: EA1000
• Driver: Second Generation DMDC 10mm Dynamic Driver, Sputter Decomposition Purple-Gold Diaphragm, 1PR
• IEM Weight: 10.97g
• IEM Dimensions: 22mm (height) x 17mm (width) x 20.7mm (max depth)
• Shell: High-polished full metal body with transparent crystal face plates
• Impedance: 16Ω±15%(@1kHz)
• Sensitivity: 127dB/Vrms(@1kHz)
• Frequency Response Range: 10Hz-50kHz
• Effective Frequency Response: 20Hz-20kHz
• Connector: 0.78mm 2Pin

Includes:

1 x Pair IEM
1 x Detachable High-Purity Litz-style OFC Silver Cable (no mic)
1 x User Manual
1 x Magnetic Carry Case
1 x Warranty Card
3 x Interchangeable Nozzles (three target curves)

YouTube Review:



Introduction

Are SIMGOT the IEM brand of the year? It's hard to argue with an incredible run of releases throughout 2023 that has culminated in, quite possibly their piece de resistance, the EA1000.

Fermat's Last Theorem, stated in 1637, perplexed mathematicians for over three centuries. It proposed: no three positive integers a, b, and c satisfy the equation an + bn = cn for any integer value of n greater than 2. Many brilliant minds failed to prove this elusive theorem over the years until finally, in 1995, Andrew Wiles presented his (corrected proof). I was in senior school back in 1993 when he had his first stab at it, and I remember at the time my school making a seriously big deal about it - if you saw the alumni from where I went to school, you'll probably understand why, but put it this way - I doubt any of them are furiously trying to recount the details to help them review their latest set of IEM's now thirty years later!!

The EA1000 pays homage to this mathematical mystery, as SIMGOT's journey to master their own house sound (finally with a deviation away from Harman!) echoes the unwavering persistence required to prove Fermat's theorem...ish! After honing their craft with previous models like the EM2R, EA500 and EW200, SIMGOT have rounded off the year presenting the EA1000 as an encapsulation of their learnings - a beautifully crafted IEM that might just resolve the equation of <$200 = supreme audio fidelity! Wiles was knighted for his travails, and even earned the 2016 Abel Prize - I'm pretty sure SIMGOT would be happy with IEM of the year in the New Year's Honours List, and at least as far as I'm concerned, they're looking pretty damn good for it!

The EA1000 includes some pretty impressive tech. It isn't cheap - $219.99 - and you would be forgiven for being slightly taken aback at what is, on paper, a single DD arrangement. However, this is where cutting through marketing bullsh*t is essential - firstly, they've used 'SPGD Technology', a special diaphragm manufacturing process which results in a high rigidity, lightweight diaphragm coloured in purple-gold. As you'll see later, the macros bear testament to its existence at least! Secondly, DMDC, or dual-magnetic and dual-chamber driver technology is geared up to provide exceptional dynamic range and precision high-frequency performance. Finally, the 1DD plus 1PR architecture means the pairing of a single, 10mm full-range dynamic driver and a passive radiator for a more responsive full range with improved stability and driveability.

They've also chucked in replaceable nozzles, giving you three target curves:

Gold Nozzle, Gold Curve: SIMGOT-Golden 2023 Curve
Red and Steel Nozzle, Red Curve: Harman 2019 Curve (pre-fitted)
Black and Steel Nozzle, Blue Curve: SIMGOT-Classic Curve

So essentially, you've got a single DD which breaks away from the usual production process and materials. You've got a passive radiator to get more from the lower frequencies, and you've got an overall arrangement that is designed to enhance clarity and imaging, giving you a fuller, more precise sound. And to top it off, you've got three different sound profiles in the box based on your personal preference.

The EA1000, or at least the tech they've included, is over three years in the making. Was it worth the wait? Let's find out....

Unboxing



To unveil the true beauty of the EA1000, I suggest watching my YouTube review, because still images really don't do it justice. The shiny, 'milk tray' purple and gold outer exterior mirrors the purple-gold diaphragm technology I waxed lyrical about in the intro, and the focus on the front is very much the theme SIMGOT have applied to the release - Fermat's Last Theorem.



This theming continues as you peel back the layers of the box to reveal the array of accessories, which include six pairs of eartips, a stunning, shimmery high purity silver-plated OFC Litz-structure cable, the three detachable nozzles I mentioned in the intro and some coloured rings to denote and identify the nozzle.



The carry-case has a magnetic, flip-open lid. It's leather-look, with the SIMGOT branding on the top.



The back continues the theming with the expression 'Salute to Art and Science'. The case is a decent size, measuring 97 x 71 x 38mm.



There's plenty of space inside the case to fit the IEM, the cable, the spare tips and the spare nozzles, which come fitted into a screw plate so they won't be easily damaged if stored inside. Here you see the shimmering properties of the cable in the sunlight.



The theming continues, with the warranty card not able to escape a brush with Fermat!

Build Quality and Design



In my review of the EM6L, one of my minor quibbles was the resin design, which lacked a little curvature on the inside. With the EA1000, SIMGOT remedied both of those issues effortlessly. Despite weighing just under 11g per IEM, the EA1000 is a delicate, lightweight, beautifully designed IEM that combines a fingerprint-magnet-high polished steel body and patterned crystal glass faceplate with an elegant profile that looks as good in the ear as it does resting precariously on a railway bridge above!



On the inside, note the improved curvature, which we also saw in the EA500. This gives the EA1000 better fit and improved isolation. Here you also get your first glimpse of the passive radiator, and what the IEM looks like with the nozzle removed.



While we have the IEM open, here you see the Puple-Gold SDPGD driver in all it's glory.



Move to the outside and you'll find a slightly recessed 2-pin connection terminal and the 'Fermat' insignia. Whilst testing the sound with each of the nozzles, I got a few snaps - here is the EA1000 with the gold nozzles fitted. I enjoyed all of the sound signatures, as I'll come onto in the Audio & SS section, but whilst the gold nozzle looked the best, it wasn't my favourite of the three sound signatures sadly.

Removing and replacing the nozzles is a simple and pain-free process. The stock and black options have some black foam at the base of the filter, whereas the gold has a thin membrane with a hole in the middle. Removable nozzle mounts and filters allow endless sound fine-tuning without compromising comfort. Each earpiece contains threaded nozzle sockets, letting users swap between included targets with ease. The nozzles themselves integrate securely while permitting adjustment.



Here you get a glimpse of the fit of the EA1000. There's no pressure on the tragus at all - the line you see here is from me pulling the ear hook back. It's an extremely subtle design which doesn't protrude regardless of side or front profile. The ear hooks are quite loose - this makes them super comfy, but it impresses on you to get the fit right from your tip selection. I've tried a few different tips and so far none fit better than the stock.

The IEM measures 22mm (height) x 17mm (width) x 20.7mm (max depth) - it's noticeably leaner looking than the EM6L, but very similar in dimensions to the EA500.

Looking closely at the construction, it's very evident that no corners were cut. The metallic shells exude precision craftsmanship with their lustrous chamfered edges, and their robust but streamlined profile strikes an ideal balance between aesthetics and durability. Both the EM6L and EA1000 rank among my most comfortable IEM's, making them both ideal for long listening sessions, with the EA1000 edging it thanks to that more tailored inside profile. They aren't as bulky as many of their competitors, and the nozzle length and depth seems to be optimal for a non-invasive, fully-immersive experience.

Audio & Sound Signature



As per the intro, SIMGOT claim to have leveraged innovative driver technologies to deliver pristine audio reproduction. At the heart sits its new purple-gold sputtered diaphragm, crafted through a complex multi-layer deposition process for optimal rigidity and low mass. This enables the 10mm dynamic driver to resolve the finest details and dynamics with minimal distortion.

The diaphragm pairs with a dual-magnet motor system for enhanced control across frequencies. This dual-magnetic circuitry widens the dynamic range and transient response compared to traditional single-magnet designs. Treble reproduction sees particular improvements, providing crispness without harshness.

A rear 6mm passive radiator adds tactile bass texture and natural ambience. It resonates symbiotically with the front dynamic driver to augment low-frequency presence and dimensional realism through its added airflow interaction. The effect is addictive, highly detailed bass that is palpable yet controlled. There are no coherence issues due to the unorthodox but highly effective driver arrangement.

The three filters provide three different sound signatures, as shown here in the FR measurements above. Regardless of which filter is used, the EA1000 has a natural, accurate tone, even moreso than the EM6L, and the beauty of not using a BA. Natural tone has characterised all of SIMGOT's releases this year - even the low cost EW200 - but it hits new levels here due in no small part to the magnificent lower frequencies, masterfully facilitated by the passive rad.

The Red curve is the stock curve, based on the Harman 2019 target. Out of the box, the thing that hits you with the EA1000 is the vast, expansive soundstage that immediately places you at the centre of a disparately-assembled orchestra. The midrange on the EA1000 particularly impresses, with clarity and naturalism. Vocals dazzle with their intimacy and nuance, marrying richness with airy transparency in the upper registers. Instruments similarly feel lifelike with striking realism.

In Paul Wasabii's review I noticed he used Madonna's 'Holiday' as a reference track, and using that as an example, the cowbell, tams, shakers and other percussive elements in the intro expand before your horizon, with wah wah guitars entering from a distant point to the right with precision positioning. The wasp-style synth and bassline are lightweight but controlled and full of texture, and Madonna's vocals sound as sweet as they ever did, with her gasps perfectly evident.

Move over to 'All of Me' by John Legend and you get another glimpse of how well the midrange is handled on the EA1000. The piano intro sounds articulate - full but crisp at the same time, whilst John Legend's vocals dissipate around you with an engaging resonance at the centre. The midrange timbre is very natural - regardless of male or female vocals are clear and open with great depth. The midbass depth is dense but the bass is well controlled - there's no bleed or blur, everything is immaculately controlled.

Putting the bass through its paces with Hans Zimmer's Time showcases the impact of the passive radiator. The EA1000 isn't a bass canon, but the lower frequencies have magnificent depth and resonance. It is a thick and fast bass response that is tightly controlled - layers and layers are knitted together very smoothly and naturally. The boosted bass leaves a visceral impact without bloat or muddiness. Its outstanding texture and detail are rare among even pricier competitors.

The treble captivates with its smooth, effortless extension. Cymbals shimmer brightly without aggression. The added airiness provides a pristine top-end complement to the resonant bass, avoiding harshness or sibilance. The tightness, control and accurate decay and reverb are illustrated nicely in 'Good Times' by Chic, where you can even hear 'fingers' in the claps. Yusef Lateef's 'Bishop School' brings tambourines, horns and sweet-sounding flutes to life around you as the stage sweeps out before your very ears separating very clearly. Really incredible stuff.

The EA1000 are better served with jazz, classical, opera, and generally orchestrally-complex tracks than more energetic genres, where they can feel a little too immersive, leaving you to catch your breath a little.

Micro-details and technicalities, as you probably guessed, are top tier - especially so with the 'Red curve' filter. It's a transparent and analytical sound that still offers great dynamics. The 'Gold curve' nozzle expands the soundstage even further, but detracts a little from the depth. The sound is a bit too bright for my liking, with a cleaner, leaner and more analytical sound to it that dulls the bite of the trebles and boosts vocals. The black ring nozzle is a bit more sparkly with more energy - I can't quite decide which curve I prefer so I reserve the right to circle back to this review and edit in the future!

Summary

Once again, hats off to SIMGOT for a remarkable release that well and truly stamps their authority on the IEM market. They got pretty much everything right here, from the overall experience and accessories to the build and design, and most of all the sound signature. It's easily a five star review that remedies man of the 'areas of improvement' noted in their previous releases.

The soundstage and dynamic performance are so moreish that I haven't used anything else since I got them. They aren't for pure-bassheads and the presence of the upper mids may be a little much with the stock nozzles, but the three filter options means there's probably something for everyone here.

In the sub $200 category, there's quite a bit of competition for your hard earned dough, but the EA1000 convinces with a super-textured, airy bass, lush mids and sparkly-enough, natural trebles. Its expansive soundstage, natural timbre and excellent resolving capabilities all constitute top-tier performance, and the straightforward driveability and coherence put the icing on the cake for a well-presented, great looking, high performing IEM that cements SIMGOT's seat at the top table.

Is it my IEM of the year? So far, I think that's a resounding yes.

The New SIMGOT EA1000 Flagship IEM



Introduction:
You’ll have to excuse this review, that while informative, it is incredibly long. It’s just when IEMs are this good for the money and so groundbreaking in what they offer, there is no choice but to talk a lot about them. In fact even if the EA1000 was 1/4 less as good it would still get the full 5 stars from me. Yep.

SIMGOT as a company is on a roll. The two prior major releases which have amazed the community have been the EA500 and the EW200. I will get into both of them in a few.

https://www.head-fi.org/showcase/simgot-em2r-roltion.26084/reviews#review-29526

Even though SIMGOT has been around for a while, they have never gained the popularity they have now, and it seems they are going from strength to more strength? Back in early November of 2022 I reviewed my first SIMGOT, the Roltion EM2R and I only gave it 3 stars. The issue for me was that it didn’t have enough note-weight. But more than that, the IEMs SIMGOT puts out now almost don’t even seem like they are from the same company? Improved ergonomics in fit is one reason….still with the EA1000 being 11 grams each, the sheer weight makes you wonder? The past EM2R was almost too small and too low weight. But this EA1000 is really perfect, though maybe getting better ergonomics with the supplied cable, due to the included ear-hooks?

Meaning as far as fit and comfort goes, the correct cable ergonomic movements, the weight and just how they sit inside your ear.......plus the nozzle length……it is actually surprising to a jaded reviewer like myself just how well these fit and stay in place? If you look there are a series of air-vents which inhabit the rear (ear-facing) area? Three vents and one giant one, something about this device being a passive radiator? There is a gold screen for it, yet all three vents never get blocked.........somehow?

The EA1000 Technology:

1) SDPGD technology
This added process uses Sputter Deposition to create a more rigid and lightweight diaphragm. In terminology, the SD stands for Sputter Deposition, and the PGD stands for Purple Gold Diaphragm.

2) DMDC Dynamic Driver
This is a dual chamber created for the driver.

3) 1DD + 1PR
This is a combination of an active 10mm driver with a 6mm passive radiator

4) The EA1000 changeable nozzle technology
Here three nozzles are included as a way to generate three specific tuning curve directions, using both stainless steel and brass materials.

SIMGOT EA1000 first impressions:
For me the addition of DD and Passive Radiator seems most important, as there really is this natural ambiance to the bass which stands out different than any IEM in this price category? There are truly added dimensions of texture and ambiance to the bass quality? They say this is the direct result of increased air-flow and that is really what it sounds like, you can hear this technology in action? For me I listened first then read about the technology later, and this was part of my first impressions, noticing how the bass was effortless and agile? But obviously there needs to be special attention to the mids and highs, yet on first listening both the mids offered a nice smooth midrange and treble offered great itemization of imaging outwards into the stage. Though prior to burn-in I noted a slight lack of low-end punch that kept the EA1000 as a recommendation to a rock or EDM listener. Though the most rewarding sentence in this introduction is the EA1000 completely changed upon 130 hours of burn-in. While it basically still had its personality, except added smoothness took place, and added bass authority which allowed for a fantastic IEM inclusion with rock and EDM. To try and put this into perspective, the EA1000 was so good right-off-the-bat........that I was still fully enamored with its abilities, and continued to find stuff it played well. But after 130 hours of burn-in really it was way more well rounded and played all genres.


The filter system:
It’s best that I briefly go over what SIMGOT is attempting to do with this new filter system. Graphic representation of what each filter does is represented on the box.

1) The new Golden SIMGOT target (brass filter system)
2) The way they came with the red rubber rings. The 2019 Harman Target, my favorite no doubt.
3) The black ring filter, SIMGOT Classic target.



I listened first to try and get a handle as to what they are up-to with the filter system. You can’t help but note the black foam on the underside of both the black and red ring filters, with the Golden brass nozzle having only a white sticker with a small hole in the center? The Golden curve is slightly more clean, less thick.

Comparisons:
These comparisons are a way to understand an IEM due to contrasts of abilities and tone. Of the eight comparisons provided here four of them are previous SIMGOT products. I added the four SIMGOT products as a gateway to help in understanding the EA1000, especially if you already had made a SIMGOT purchase in the past. Also I added them to try and document just how far SIMGOT has progressed with the new EA1000 too. The other four products are used to kind of delineate the differences and abilities by direct side-by-side comparisons. All tests with Sony WM1A with MrWalkman’s firmware, my typical wide-bore silicone ear-tips and White Whale Cable in 4.4mm. I in no way want to be-little the included cable because it’s really nice, except it comes only as 3.5mm, yet I often referred back to the included cable, if not only to make sure I was not missing anything in 3.5mm.



Test 1:
I simply chose the IMR BC 2023 and 7Hz Legato test subjects as I thought the contrasting bass (to the EA1000) would be fun? Both the IMR BC 2023 and 7Hz Legato are considered bass cannons, and while that is true there is still a wonderful balance that the IMR BC 2023 is renowned for. Such a forward IMR midrange that has many simply smitten with the produced frequency outcome, including myself.

IMR BC 2023: $369.00
One 6mm ADLC (amorphous diamond like carbon) driver and one (size undocumented) ADLC driver:
Here we are reminded that the IMR BC 2023 isn’t really that much of a Bass Cannon after all? Its name is maybe a marketing tool? And while yes, it does designate the BC 2023 into a curiosity of listening, I can’t help but wonder if true Bass Cannon listeners will not be let down? After taking some time off from the BC 2023 what really hits me first is the warm midrange it holds, that and the a wonderful separation contained. Such imaging of elements out into the stage really, maybe due to it being 2 DDs, come across even more technical than the EA1000 hoped for. Way more money than our EA1000 and rightly so, as this style of replay has its own charm, yet probably when it comes down to it the EA1000 has a more (maybe) together timbre in the end, not as separated of imaging. The EA1000 has a slightly cohesive and natural tone, despite being overall brighter and more juiced-out up-top. Still in our testing today there is only one Bass Canon and that’s the 7Hz Legato! Still what seems like a less dampened IMR response goes ahead to provide slightly more volume at the same level, inside that volume we are gifted with a bigger stage and further-out larger imaging of elements, better crafted inside that stage. Where the EA1000 is more straightforward, the IMR is kind-of a character, in holding a darker wider positioning which promotes less brightness up-top, but creates a smoother treble all its own.

7Hz Legato: $109.00
Large 12mm Dynamic Driver with Multi-Layer Composite Diaphragm and 6mm Micro Dynamic Driver With Composite Diaphragm:

Bass focused is really the word on the street here. Even with my mid-centric WM1A and wide-bore silicone ear-tips, I can’t help but realize that this is some of the most bass I’ve ever heard from an IEM. Though if you note closely you can still hear the top-end treble balance, as they had to do something to make this style of replay digestible. In essence this treble is the magic that helps this very unorthodox tune seem to work out. Still for this replay to be enjoyed there needs to be a subtle acclimation period as typically the L shape tone will come as a surprise from any style of playback you’re accustomed to. Where here if there was any proof as to the deep bass emphasis contained deep down into the song structure, it is truly there……..all of it! Though in contrast to the EA1000 we also get some extra baggage in the form of bass bleed into the midrange. Yet to top the Legato off, or yet to bottom the Legato off……….there is added bass emphasis to somehow add pace on-top of what would be considered a deep and thoroughly displayed rendition of bass. If anything at all, it shows how our EA1000 can arrive at better well roundedness in daily use. Also we come to realize that some music simply doesn’t go so low in range, that there are albums and even whole genres of music that don’t have a need for such extremes in Hz playback. Yet there is a time and a place for what the 7Hz Legato does. It actually may end up complementary (to the EA1000) for many listeners, being the Legato playback is special and one-of-a-kind. But in contrast......the EA1000 is way, way more mid forward offering a faster yet still authoritative bass response……added to that due to the bass balance differences from the Legato, a treble that’s there as well as the boost that’s offered with the EA1000 at 14kHz.......which ends up taking the whole signature into more clarity and imaging expansion.



Test 2:
The Kiwi ears Orchestra Lite: $249.00
8 Custom BAs:
The Kiwi ears offer lean and faster itemization of sonic elements. Bass is way less visceral and slightly set back in comparison to the EA1000. Even though tuned slightly the same, the Lite’s midrange here shows a more metallic tone. Where our money here is in more EA1000 note density, more note weight from the EA1000. In fact it’s the overall weight of the signature which goes to make the EA1000 special, more special than I thought after this test was complete?

The Kiwi ears Quintet: $219.00
1 Diamond-Like Carbon 10mm (DLC) dynamic driver
2 balanced armature (BA) drivers
1 planar magnetic driver
1 piezoelectric (PZT) bone conduction driver

Bigger separation into the stage, as this is our first Hybrid today. Yep, all those different driver methodologies doing something. Just amazingly separated imaging here with the Quintet. Also the low-end is kicking its rightfully so authority! The Quintet replay today is simply amazing here? The way each element is in its own area of the stage, like each element is free to act how it wants? The EA1000 has slightly better bass, and interestingly enough bigger imaging into the stage, with more weight and size than the Quintet? This was one amazing side-by-side, as the EA1000 can keep-up in its own way with the Hybrid of the Quintet. Bigger size of midrange out into the sides, where the Quintet is grand, but lacking in note density and girth? There is a slightly faster attack and decay that comes with the Quintets top-end, yet the EA1000 has better note decay.



Test 3:
SIMGOT EA500: $79.00
10mm Dynamic Driver:
The moment of truth. While at this early point in time it’s safe to say the EA500 is more popular, as it has had more of a chance to become popular. Where the issues for some were they just didn’t find the signature as accessible as others. That once again just proves how subjective this whole business is. Where I found the bass fine, graph readers saw issues, and some simply found the midrange to be on the hot side. Where probably much of that came from (again) the lack of lows for some listeners to balance out the highs? Still in my book the EA500 can do no wrong, in fact I hear bass detail in the bass department. Also I feel the EA500 is one of the single best imaging IEMs for the money, just the technicalities it does on a regular basis. Though-out this year that fact has been confirmed and reconfirmed as the SIMGOT EA500 has been re-introduced into side-by-side tests, over and over again. Such is life when a major value is tried again and again to see if it still holds value in relation to other competitors. The first thing you notice is how the bass of the EA1000 has its own area of life, there is more of it, but also better quality as it’s defined and tailored to be dressed more for success. Combine that with a more filled out midrange of better imaging and detail, and finally the treble gets imaged further out into resolution. Hands down across the board the EA1000 is better at everything…..and even more so when they are tested back-to-back.


SIMGOT EA500 with filter nozzle system:



SIMGOT EW200: $39.99
10mm Dynamic Driver:
For many the EW200 was a success over the EA500. SIMGOT shifted gears from a EA500 2016 Harman Target to the 2019 EW200 Harman Target. For many the EW200 showcased just what 2023 was about as far as IEM value. And I have to agree, that single handedly the EW200 showed the world how much IEM was obtainable for under $40.00. For those wanting the extra low-end SIMGOT went ahead and added the goods, making many happy in the end. And that’s not to say the EW200 is any kind of Basshead IEM, because it’s not, it is well balanced, yet with more satisfying bass (for some) than the EA500. But that is also combined with a slight dip at 3.5kHz which helped to smooth things out even farther. And guess where else that 3.5kHz dip is? In fact the graph at 3.5kHz all the way to 5kHz is very similar in nature between the EA1000 and EW200. And if anyone knows that area of the Pinna Gain is very much a place where our hearing is most sensitive, meaning combine that Pinna Gain with a low-end that is similar and we have two IEMs that sound very close to the same. Though where the two IEMs start to differ is the EA1000 has about 4Hz less bass, That, and they are complete opposites at 14kHz. Where the EW200 peaks at 12kHz then again at 16kHz. Though again due to close proximity in the Pinna Gain area and similar in bass, they both offer FR signatures that are very close. The differences come with the quality of EA1000 bass technicalities that really separates the two to my ears, and the imaging in the midrange, which is noticeable better with the EA1000. Still if you were to listen to them back-to-back, they are birds of a feather.



Test 4:
SIMGOT EM6L: $109.99
1DD + 4BA Hybrid Drivers:
Laughably SIMGOT went hog wild with their Hybrid ideas here. Yep, you can study the graph here, except no way will the graph truly explain what is going on with bass extension. Sure the graph represents it, but you also have to take into account what the 4 BAs are doing to balance out what is all going on up-top. Laughably this is a Hybrid and the total opposite of what we have with the EA1000. One zigs where the other zags. But one look at that EM6L bass extension would have you believe the bass is maybe out of control, or sloppy……and that is just not the case here. The bass goes low, but it is clean and in control.

The BAs are more (slightly) metallic and not holding the density/girth (note-weight) of the EA1000’s treble or midrange, the EA1000’s bass is more refined and over-all this single DD means that while stage is nice, it doesn’t quite have the total (side-to-side) positioning of the EM6L. What we get are the (plain and simple) regularly understood methodology differences here, where the EA1000 is more cohesive and together and the EM6L more dislocated and fragmented in response. Does it make one better than the other, hmmmm I guess it would depend on what you are after? Normally I like Hybrids the best, but the way they did the EA1000 it almost doesn’t sound like a DD, it almost sounds like a Hybrid? I know I sound like I just contradicted myself, only if you're wondering what the best part of the EA1000 is, it doesn’t really sound like a single full-range DD?

https://www.head-fi.org/showcase/simgot-em6-l.26639/reviews#review-31512

In the EM6L review I go into more about the graphs and the various targets SIMGOT has focused on. And while it’s safe to say the EA500 (red nozzles filters), and EW100P were more are less focused on the 2016 Harman and the EW200 and EM6L were more in line with the 2019 Harman, still these summaries could be considered over generalizations. Still whatever Harman (2016/2019) your direction is, it does give an overall characteristic to the sound, as such these generalizations are applicable.

SIMGOT EW100P: $19.99
10mm Dynamic Driver:

This IEM didn’t get the best review from me. It’s not because of price, as I gave the 7Hz Salnotes Zero a great score, I just thought the missing low-end combined with the forward midrange was just not a good combination, plus the overall sound was boring and had no personality?

Cables:
Once again there is absolutely nothing wrong with the included cable, only using these aftermarket cables enabled the use of 4.4mm balanced amplifiers which at times are better suited for playback.


ISN G4 Cable:
To tell you the truth, this is one of my absolute favorites with the EA1000 IEM. Why? Added is note-weight……..even bigger than is found naturally with the EA1000. So much of this could in-fact be partially due to favoritism, which I’m not immune to. I use this cable all this time. But what it gets you in the case of the EA1000 is separation, and a tone-down of treble. There is a resulting smoother 14kHz peak, and a more sculpted low-end, like from a blacker background. So it totally makes the sound slightly smoother yet with an added stage expansion that is totally different from the HiSenior White Whale. Where there is a lower midrange added thickness to the White Whale, where the G4 makes the lower midrange cleaner and clearer. What this gives you in the end is increased imaging into the stage, all the while a slight overall smoothness that is rarely found together with the expanded mids into the stage. I would suggest this to those that want to access 4.4mm balanced.....simply get the G4 for the EA1000!


Penon ASOS Cable:
A more natural idea of a cable response, not to say that the G4 colors the sound, except the G4 is maximizing the Graphene tone and character to the fullest extent. Where here we are enjoying a bigger more straight forward size of stage increase and evenness of demeanor. None of that drop in low-end through sculpuring and added thickness or (better yet) contrasts as found with Graphene. Big imaging size, grander stage……….of course there is no way of truly knowing as we have switched over from 3.5mm to 4.4mm.....thus a totally different amplifier in the WM1A player. Offering faster note attacks and note fall-offs into which the EA1000 has the room for, while still maintaining the overall sound signature and over-all EA1000 personality. Maybe slightly the most energetic of cable tests today?



HiSenior White Whale Cable:
Thicker, meatier than the regular cable, how much of that is the different amplifier in the Sony WM1A is debatable. A fuller lower bass than the ASOS and slightly more forward than the G4. Part of what the ISN G4 is doing is setting some lower frequencies back, into the backseat, to enhance the feeling of a darker yet more forward midrange, with more note-weight and a wider girth of expansion. Here we are more like the ASOS, except slightly thicker in the lower midrange. The ear-hooks make the White Whale a joy to use.

Included Cable:
The silver plated Litz Structure is amazing. Having all metal hardware it includes the perfect ear-hooks which are not too aggressive or weak in daily use. The way the EA1000 sits with the included cable is something to behold. Even the sound with the included cable was something that I couldn’t get enough of, always going back to check on it. Pre-burn-in the sound was great with every genre except rock and EDM, though after about 130 hours of burn-in the supplied cable with the EA1000 had a certain sound that went with all music and all file types? I was especially taken with how the included cable acted in that it could be coiled into a small form and always laid where it was told. Also there were very little microphonic properties in daily use, which I found surprisingly good. A nice touch was the all chrome hardware and gold chin-cinch.




With regular phone use:
Due to the enhanced note-weight of the EA1000 it was totally enjoyable in regular phone use. While definition and stage were not quite as dramatic as with a dedicated Audiophile DAP, the differences were small, and may not be a big deal to some. There was better perceived darkness of background with a DAP also often the phone use was 75-80% of full volume. So the AE1000 are not hard to drive but does scale up with better equipment.

Out-and-about:
Normally I would not advise jogging with such an IEM, I mean most will have TWS for sports, except fitment here is incredibly special, at least I would have no worries with these ever coming loose in public? Even the solid metal design adds to the noise occlusion, meaning you see all these vents on the back and think they would be open sounding to let outside noise in, when in fact they offer really good sound occlusion. I would even suggest jogging if you so wished, as they simply fit that good and never move out of place with the supplied cable.

Packaging:

Build:
Coming in at 11 grams a piece, the EA1000 is one of the heavier IEMs on the market, though lucky the form factor is also on the medium size. This accomplishes a really important aspect to ergonomics, in that most of the actual IEM weight sits inside your ears. There are no sharp edges so they simply glide into place and stay put. The outer surface is glass but somehow they fail to ever show fingerprints? So counting the glass you have four basic pieces in that the nozzles are removable for sound design. The cable plugs are ever so slightly recessed and the actual nozzle length seems just right? The passive radiator really adds to the feeling of openness and bass texture? At least this was my very first impression of how the EA1000 was different in its IEM price category. My regular go to ear-tips were fine as well as the included SIMGOT tips worked well. This is always a good thing when you can get fitment with a wide range of ear-tips, and the fact that the IEMs themselves never seem to move to where you lose the air-tight fit? Surprisingly the bare metal shell of the EA500 was a fingerprint magnet, yet here even the sides don't show smudges, and I don’t have an answer as to why? This is an IEM I never polish-up or feel the need to?



Music:
Here I will take a few albums to help describe what the SIMGOT AE1000 does.


Gdanian
Induction
Arrival
44.1 kHz - 24 bit
Here we are met with an electronic soundscape. Often music like this can be scathing or unlistenable on the wrong set-up. Here I’m using a MacBook Air hooked-up to the Shanling UA3 and have met with an enjoyable soundscape. Here even though the signal in the bass frequency department seems uneventful or even with-out consequence, in fact it is the essence that is showcasing our beautiful bass transients. That even though small in changes........the bass texture is enveloping and unique…….at 02:16 a single drum beat introduces us to the rhythm. At 02:43 a symphony of electronic effects and additives takes place. Yet at 04:00 all is back to normal again, yet there is a background of white noise that is fascinating. I chose this song because the themes it introduces are subtle and provocative. Being it would be the immersion taking place which is at the price of everything else. Just this big towering bass drone, not really going anywhere and helping us find the moment in which we are spellbound by the minimalism of it all. In fact there was a dog barking and I had to check if it was in the song, of course it was not, but it went with this style of tune! There is the use of only a single drum beat, only a one hit………yet it is complete, yet still sounding like more of a sketch than a song…..but that’s OK as I have found complete entertainment, possibly due to the transducers used?

Gdanian
Induction
Veins of the Planet
44.1 kHz - 24 bit
Now the previous first song makes total sense here, as it had to exist as a gateway to where we were going. Any ideas of sketches were then fully formed into life in the next song, which is really a continuation of the first song. Now instead of dogs barking I hear what sounds like water dropping? And……I’m sure this time it is in the music. This is the kind of music that will remain at the absolute minimal process and border on boring for a moment until that one part hits to make it all make sense, even to the prior song section. These are very light and inconsequential forms of sound design, yet enchanting when you can enjoy simply the tones they are reaching for. There is nothing more or nothing less, as this experience is captivating yet it is what it is.

Gdanian
Induction
Shield Emitter (feat. Tineidae)
44.1 kHz - 24 bit
HA, this is all starting to make more sense as the prior songs are the perfect set-up to what’s going on now. And yes, it was all totally worth it (to be) here, to be dragged along up to this point in time. And in-fact I am hearing the greatest synth-bass here even at the start……….at 00:13 hahah. This is where we were going all along. At 01:35 there is a climax of sorts, where we have entered the message of the album. At 02:34 the bass drones are provocative and entertaining to say the least. At even the 03:30 you can tell there is going to be 01:40 more minutes of this minimalism, and that’s OK, it is like the end of a day as the sun has just set over the ocean and the beginning of night approaches.

Gdanian Induction conclusion:
This was an interesting first three songs. Many times I will use instinct to try and discover how new music goes with a new IEM. I mean you normally know right off if something is working out, that there is value to be found. And the crazy part was I really didn’t become blown-away until the third song, yet it all seemed to work. The fact that this recording is absolute in the minimalism it used to drive at success. That in many ways the music had you lusting for slightly more (especially) bass and provided only just the amount needed to move the songs along, up till the third song which provided the sonics in ample amounts. Such a trick is the very opposite of too much, that they are stingy to give you what you want, which in-turn makes you want it that much more, when it all finally hits home. That in-fact the EA1000 was along for the ride, simply relying what it had (to work with) in the best of form, that when the third song hit those layers of bass and effects made for a profound and emotionally moving experience. That this minimalism has brought me back to my original audiophile roots, that it is with-in sound design that we can take a form of realization inside the beauty of an individual series of tones. Just hearing these tones come across can show us the complete imagination of creation and poised positioning to only include what is needed at the very basic level to make it work out.

Intermission:
The remaining 4 songs were all played using the included cable and my regular wide-bore tips with the Sony WM1A with MrWalkmans software. No EQ was used.

Lorne Balfe and Andrew Kawczynski
Grand Turismo OST
Jann’s Journey
44.1 kHz - 24 bit
Here I must admit was my favorite song upon first getting the EA1000 in my ears. And now hearing it once more allows me to partake of such a musical experience in full form. At a full length of only 02:47 this number packs a punch. Even at the very start right at 00:16 the deepness of the reverb found surrounding the drums and the fall-off into the stage makes the song fun. Though it’s the deep layered violin samples which exist at the 00:30 mark that once again begin to move the emotions. Such violin stabs are found to be transfixing in their attainment in the stage? Does listening even get any better with any other IEM? Those are the style of questions we are forced to ask ourselves. At 00:43 the sampled chorus is all I need to become enamored with this song, and it doesn’t matter how many times I hear it played back. For here the layers and the intrinsic relationship between each and every facet of this song makes my day….I’m moved? At 01:21 there are added rhythm accents which seem to show us the distance of our stage size, and inside their display I have all the stage I wish for, seemingly coming to life, these samples from the very farthest reaches of the stage. At 01:40 there is a syncopated sequence of lower bass throbs that while not the lowest I’ve ever heard, are still clean and fast……making the song for myself at this single point in time.

Lorne Balfe and Andrew Kawczynski
Grand Turismo OST
Academy Race
44.1 kHz - 24 bit
Ahh the lows at the start? Now we are getting somewhere? HAHA? What? Even at 00:14 the depth and airiness achieved is with-out competition. This, this is why we are here, and the very reason we have ear-monitors in our ears. All the work SIMGOT has accomplished to get us here at this exact place in time, the transients held with-in how the bass notes are attacking……..pure gold. If you end-up purchasing the EA1000 definitely try this music out as it’s a perfect example of just how good this IEM can be. At 00:23 just the way the lows are imaged into the stage, taking form into an element all itself. The shape, the size, the timbre……it’s all so very good, need I say perfect? Part of this comes from the layers of bass, that it is created as a layer upon layer of bass tone, and the EA1000 takes such tones apart. Such a display of texture is not able to be shown with the 7Hz Legato, it’s just not this clean and precise in the bass department for this level of extraction. At 01:01 the strings show-up to add to the instrumentation, seemingly going along and just another additive to our musical involvement. At 01:17 the chorus comes in and again I have basic chills……here. Yep, cheap thrills over at Redcarmoose Labs…………….What can I say? At 01:27 there is a threshold to how the bass interacts with the rest of the song, seemingly dropping out of frequency range, and that lowness, that extreme point of playback, we are here right in the moment with the EA1000, going places, places never thought of being a part of? Laughingly at 02:22 there doesn’t seem like there are any more sounds to throw at us, but they take this whole affair to the next level? Where in many ways the next game soundtrack (Forza Motorsport) in this series of tests is not at this epic level. Where Forza Motorsport almost doesn't have enough to exist on its own as an involving piece of music. Yet this Grand Turismo goes to the farthest place to let you know it can exist as music all by itself, becoming entertaining and moving just by sheer amount of information overload. This song ends as my favorite in testing, showing the extreme abilities of the EA1000 to go the extra mile when the music calls for it.


Kaveh Cohen, Michael Nielsen
Forza Motorsport OST
Brotherhood
44.1 kHz - 24 bit
Such a song promotes this wildly enchanting low end, which seems to go even lower in areas. Added to that big synth embellishments which are totally fun and enveloping the ear-stage. Ahh what else do you really want that this song doesn’t provide? Huh? Even though the song is on the shorter side of songs, there is a lot to chew on, as a sound example there is nothing wrong with playing it over and over again, as so much is going on here. The warmth of the song writing, the full-on execution of recording it……perfect really.

Kaveh Cohen, Michael Nielsen
Forza Motorsport OST
Head Down
44.1 kHz - 24 bit
Taking us home on our investigation of music today is a dramatic digital soundscape offering a straight up and forward, simple display of characteristics. A simple yet complex display of theme music offering clear and precise tones which when done correctly fully show how the EA1000 acts. At 00:18 a keyboard harmony is yet simplistic and effective showing us just how the EA1000 displays tone. Here we can also judge the bass line in that it’s tight and controlled in perfect focus, yet we don’t need anything more, we don’t need anything else here. The sound is fresh, exhilarating and complete. Probably the best feature here are the layers, that while our stage is not the very biggest in the IEM world, we are gifted with incredibly precise layers which are in perfect contrast to one another. That in fact each element here has correct relationships to how the song was performed and arranged. Such display of performance focuses on the areas of contrast and the correct mix within itself. Just the fact that the reverbs are natural and vivid for how they are utilized. At 01:21 the keys again take precedence, in that this is the song’s highlight, being this is an instrumental theme song. But more than that, the keys have a specific reverberation into the mix, a fall-off that is very specific and heard for how it’s done here. It’s the balance of bass emphasis and the fact that we can hear everything in order, the way the producers want us to, I hope? In a way this music is cheesy except it serves a purpose in that it is supposed to be background music while the video game is played, so in hearing the OST, it’s really only part of the total experience. Still the style of music holds enough interest that there is a lot going on here, with the fact that new elements are continually added in. At the 02:20 mark there is a style of breakdown as to where there is both drum and bass accents. All of a sudden we can notice every part of the song structure being laid-out and layered in place. At 02:43 there is literally just bass for a moment and yet the EA1000 is showcasing just how well this section is done. At this single place the sub-bass exists all by itself for a moment and we are at one with it. But of course nothing stays the same and the song enters into full-effect once more at the 02:44 mark. This style of music performs a kind of guilty pleasure in that it’s nothing more than background music for a video game, yet so well done and so complete that it makes for a memorable listening experience when played back well.




Conclusion:
To me, SIMGOT is one of the most successful manufacturers of the year. Why? They simply make good IEMs. And of the six different SIMGOT IEMs I’ve heard I like the EA1000 the very best. Sure it’s the most expensive model I have heard, but I also feel they have introduced new technology which has moved the sound forward into a new dimension, at least that’s my opinion when I put them in my ears. Quite simply a quality of tightness and evenness that I feel SIMGOT was going for and achieved remarkably well. Yet what is the most remarkable is the fact that anyone can purchase and obtain this sound for $219.99. The fact that there is a basic build that is exceptional, that they fit with-out moving anywhere else, and stay in one place. The fact that while slightly heavy they fit inside your ear, so the weight may be part of the key to the sound, absorbing any unwanted vibration? The fact that the extra box accessories are usable and nice at this price-bracket. The cable is truly gorgeous and was used though-out the music testing process to achieve great results. The extra nozzles are there if you choose to use them, where if anything they do actually work to dial-in the sound to various target curves. The box opening experience is very different and shows how SIMGOT is trying their very best to guarantee your satisfaction in the box opening experience. But to me most of all the important thing is the realization of a specific tone. That SIMGOT has a style of playback that is both clear and balanced, the playback asks for personal involvement. The playback draws you in possibly due to the layers and note-weight? The fact that the bass is truly unique here, really unique at any price. Offering exceptional texture and a style of airy-agileness that just won’t quit. The way the bass forms into a place in the stage simply warms my heart, and adds a thrill in my daily use. All this is slightly different sounding than out of the box, I mean the SIMGOT EA1000 changed after 130 hours of burn-in, I can’t leave that part out? To where at first they were amazing, but became so much better IEMs at playing all genres and file types after burn-in. The fact that the mids are full and accessible exists to showcase layers of detail, all coming across seemingly totally correct and never too hot. The treble is also nice being it has a charm in that there is enough sparkle and pizzaz, yet still total cohesiveness that is the hallmark of single full range playback. With-in this cohesiveness exists a fully natural and correct timbre, that again is the very reason full-range dynamic drivers are even a thing nowadays to begin with. That this level of quality is offered at $219.99 is by far one of the best audio deals of the year. That finally we are not really at a place of subjectivity here, that anyone and their Mom couldn’t help but find value here. That even if the SIMGOT EA1000 was 1/4 less as great (in sound reproduction) it would still gain my full five stars review, and that simply goes to show how over-the-top SIMGOT have taken things for 2023……….to a place previously unforeseen, into the realm of science fiction. It’s this science fiction realm made into reality that has made this review so much fun to write, that in 2023 there is a product that simply outshines the competition on every level……..that is what Head-Fi is about!

$219.99
https://www.linsoul.com/products/simgot-ea1000-fermat

Linsoul website: https://www.linsoul.com/
Linsoul Aliexpress Store: https://ddaudio.aliexpress.com/store/2894006
Linsoul USA Amazon Store link: https://www.amazon.com/s?i=merchant-items&me=A267P2DT104U3C

Disclaimer:
I want to thank Fia Lam from SIMGOT for the EA1000 review sample.

Disclaimer:
These are one person's ideas and concepts, your results may vary.

Equipment Used:
Sony WM1Z Walkman DAP MrWalkman Firmware 3.5mm and 4.4mm
Sony WM1A Walkman DAP MrWalkman Firmware 3.5mm and 4.4mm
Sony TA-ZH1ES DAC/AMP Firmware 1.03
Electra Glide Audio Reference Glide-Reference Standard "Fatboy" Power Cord
Sony Walkman Cradle BCR-NWH10
AudioQuest Carbon USB
Shanling UA3 Dongle DAC/Amplifier 3.5mm and 4.4mm
Samsung phone 3.5mm
HiBy R3 II in 4.4mm and 3.5mm

Simgot EA1000 Fermat

Video Review EA1000. Please Support!

This year has been a busy year for our friends at Simgot. Earlier this year, I think it is safe to say that the community was wow-ed by the level of detail that was on offer by the EA500.

That was followed by by cheapie offerings with the EW100 and EW200 which bottom shelf divers happy. Especially the EW200 where the tone quality is just so good. It was just full sounding which is very newbie friendly. If this is your first IEM video and looking for what to buy? Consider the EW200.

But today we are not here to talk about what Simgot has released the past year. We look to the present and future. Today we are talking about the EA1000 Fermat.

Let's just start things off with an unboxing of the EA1000 Fermat, we are greeted with a purplish box that has FERMAT’s Last Theorem printed on the front of it. This gives me PTSD from the times in school when I had to do advanced maths. I cannot do advanced math where things don’t make sense.



The top of the box does show the product name and when you flip it to the back you are greeted by not one but 3 different FR curves! Basically, the EA1000 has different nozzles for you to choose from and these are the 3 FR from the 3 nozzles.

After shaking the sleeve off, the box pops out, You then have the Fermat Last Theorem 3D Pop-Up Card Thingy which brings me back to my youth when I always wanted pop-up books but my mum thought that it was a waste of money as much of the book is taking up by pointless 3D popping up things which reduces the literary content.

Anyways, Fermat’s Last Theorem was thought to be impossible until 1995 when Andrew Wiles published something to show that it could be solved. I guess the story here is to never give up, love always wins and always eat your broccoli and Brussels sprouts.

Below that you have the IEMs sitting in their own compartment. Removing the first accessory box you have some sponges and when you go treasure digging in them, you will find all the interchangeable nozzles for nozzle-changing goodness.

The longer Accessory box has 2 sets of the same ear tips good for clumsy people such as yours truly who loses things all the time. You also are given more O rings for the nozzles and also some literature.
In the last box, you will find the IEM case itself. It is magnetic and can close quite easily which is nice. Inside it is the cables of the IEM as well.
All in all, the packaging is pretty well put together especially considering the price. A pretty complete package.

Build Quality
The EA1000 comes in a mirror finish and as you know mirror finish is quite a pain in the butt to make simply because any finishing error can be easily seen. I’m happy to say that mine came in a pristine condition.

At the front of the IEM, you have a beveled glass faceplate with some pattern underneath it. I think this really makes the EA1000 look really premium.

On the back of the chassis, you will see the opening for the passive radiator near the top of the IEM. Below that is the usual raised section as seen in the EA500 where this makes the IEM so much more comfortable to use.

The nozzle here is interchangeable, but it does have the red-ringed nozzle as the default. This review will be based on it.

The EA1000 comes in an interchangeable 2-pin termination. The cable provided is a silver-plated cable OFC litz cable.

Driver-wise, the EA1000 has the second-generation dual magnet dual chambre dynamic driver that Simgot uses. The diaphragm, although no mention of what material was used, is a beautiful purple gold annoy that has superior rigidity and lightweightness.



Sound
As there are 3 nozzles in the EA1000, I will base the review on the default nozzle, the red ring nozzle. Tonally, the rest of the nozzle does change the upper frequencies somewhat but does not change the character of the IEM. There are 3 nozzles here, A Red Ring, a Black Ring, and Gold.

The Red Ring is based on the Harman 2019 curve and it is also what I feel to be the most balanced version.

The Black Ringed Nozzle is great for folks who enjoy sparkly treble with a little more energy.
The Gold Nozzle still has great treble characteristics but it isn't as sustained as the reds or blacks.

But overall, the nozzles do not change the tonal character of the IEM.

The EA1000 is a natural warm IEM. What sets it apart from others in the market with such tuning is the inclusion of the Passive radiator. I found that the inclusion of it really makes bass very resonant and very lifelike. It just augments the texture of bass making them airy, a little more diffused but more importantly very natural sounding.
Bass
The passive radiator makes a huge difference in the tone of the bass of the EA1000. The way it changes tonally with added resonance and realistic decay is simply delectable. By no way, is the bass texture of the EA1000 like that of an open item which dissipates way too quickly.



Bass is fast, with unbelievable texture and very natural decay. I would say that bass is airy sounding yet full at the same time if that makes sense.

Subbass extension is extensive on the EA1000. You get good levels of visceral bass impact that is mated nicely to a robust mid-bass offering.

These are not bass-head IEMs, but neither are they anemic. I found that Simgot has done a good job controlling the quantity of bass and increasing the resolution and more importantly texture of bass. The improvement in texture does make bass have a 3D-like rendering.

Midrange
The midrange on the EA1000 has an upper midrange focus which really helps female vocals. Female vocals just sound very delicate and sweet. The resolution here is a whole level up from the EA500. There is an airiness to the tone that again coalesces well with the fundamental female tones which is exhilarating.

Male vocals are full-sounding but not overly full or grunty. It again has a very airy yet full-sounding texture which really bolsters a new dimension to listening. I really enjoy this new added subtlety to the overall tone.

Instruments that dwell in this range also is very articulate sounding. Pianos are very crisp and clear with a very high level of finesse.

Treble.
I bet by now you have already guessed the character of the treble. It is effortless, smooth, and airy.

It really adds a very good level of perceived space.

But covering the basic aspects of treble, your cymbals and crashes are very well defined. Crashes especially have a delicate radiance that will disperse very naturally as well.

I do feel that the treble here is very effortless and smooth. Almost rivaling IEMS uses the Sonion EST driver that will probably cost quite a few pretty pennies more than the EA1000.

Soundstage
Width and Height
Simply stellar when it comes to width and height. The Simgot is class-leading at the price point when it comes to soundstage reproduction.

It just renders staging beautifully wide and tall.

Depth and positioning
It has very good depth rendering as you can easily tell how far the instruments are. Positioning again is beautiful. There is this airiness that makes positioning believable.

Comparisons.
VS Kiwiears Quintet
I do find the Quintet to be rather similar to the EA1000 but with a different tonality.
The Quintet is another IEM with excellent resolution that is achieved with 4 different driver types. It will give you a very good resolution performance but tonally, it isn’t as consistent as the EA1000 with the beautiful airy rendition of music.

VS Tanchjim Kara
The Kara is priced just a bit cheaper than the EA1000. The Kata has quite a warm character which is quite different from the EA1000. I do feel that the EA1000 has better resolution characteristics with a nicer airy tone.

The Kara is just a very safe warm tuning that was a type of signature that was popular quite a while back. In terms of resolution, the EA1000 is ahead.

Conclusion.
The EA1000 is an IEM that I really like. It just does so many things right with excellent levels of detail that has full bass that is resonant and airy.

It is certainly very natural sounding and I found myself grinning ear to ear when listening to them.