AOSHIDA E20

I bought this product with my own money and interest. Aoshida did not provide me with money or any necessities to review this product.


This is my honest and unbiased opinion on Aoshida E20. My likes and dislikes on this IEM are based solely on my own personal experience.


If you're interested in buying Aoshida E20 in Bangladesh checkout GeekMart. But if you're an international buyer checkout Linsoul.

It comes with a white colored box. The size of the box is relatively big compared to the stuff you get in it. The quality of overall presentation is practically above average but nothing fancy. Inside the box you'll get:


• E20 Drivers

• Cable

• 4 Pairs of Eartips (1:1 wide & narrow bore)

• 4 core copper cable

• Caring Case

• User Manual



• Distort
≤1%@1kHz

• Impedance
12Ω+1%@1kHz

• Sensitivity
98dB/mw@1kHz

• Frequency response
20Hz-40kHz

• Dynamic drive
10mm beryllium coated dynamic driver +8mm DLC diaphragm

• Wire rod
1.25m,0.05mm*216 strands of copper

• Interface
3.5mm plug,0.78 dual pin interface

It was another monthly visit on my local audio store, from where I mostly buy my audio stuff. They told me that there was a budget container under $50 and they had a test unit. After listening for 5 to 10 minutes I gave it back. I said they're decent, nothing extraordinary. Later on after a half a month a brother of mine in the audio community suggested me to use TRI Clarion ear tips with this pair of IEM. I didn't give it much thought as Clarion is a very affordable ear tips and they are not my favorite in terms of comfort.

So he gave me his pair of E20 paired with Clarion tips and let me try it for 15 to 20 minutes. I was completely shocked as it wasn't sounding like the E20 that I've tried at all. The soundstage gets wider and the overall presentation changes completely. Later on I bought an E20 for myself from that same store.
The Aoshida E20 is a hybrid build with a plastic shell and aluminum faceplates. This new combination keeps the earphones lightweight and comfortable for an extended period of time, while the aluminum adds a touch of durability. The design of the faceplate is most likely to be 3D printed to be both lightweight and strong. Overall, the design of the Aoshida E20 is kind of mordern (which I'm not a fan of), and it somewhat stands out from the rest of its competitors.




The inner part of E20 is smooth and finished, and each side is well rounded. It's most likely to be made out of plastic of good quality. No paint chipping issues were found.

The Eartips on this IEM are decent. I'd recommend a special earplug to use with the set. Both the stock ears are not comfortable for my ears. And they tend to attract dust particles.



The cable is deep brown color. It's a decent copper cable, and you don't need to change it. The upper portion has some memory, while the rest is memory-free. The splitter is made out of steel and plastic, and it's too tight to adjust for your comfort.




The carrying case is more practical than my Kiwi Ears Quartet's caring case (kiwi's case is just a more solid build). The outer part has a really good texture, providing good grip, while inside there's a soft cloth attached to it. Inside, there's a rubber band attached to your cable. The caring case alone gives the overall build section a proper structure.


Comfort wise they're decent. I personally had problem as the driver size are bigger compared to my ears. But thanks to the long nozzle they fitted properly. Changing the stock eartips makes it overall more comfortable. And the cable didn't bothered me at all during long session.


• EPZ TP30

• Moondrop Dawn Pro

• Planue R2

• Questyle M15

• IFI Hipdac

• DDHIFI TC44C

As a budget contender, I don't recommend spending too much on an IEM that is under $50. But for review purposes, I need to test it all out to get all possible results out of my gears. However, I'd recommend a decent Dac dongle and specially a pair of Clarion Eartips for this IEM. With Clarion, this IEM reaches a whole new territory. I don't know if you'd believe me, but I bought 3 pairs for less than 4 dollars in my country.

Eartips:

• Stock
• Tri Clarion
• Final E (Black)
• Spinfit CP100+
• KBEAR 07

Cable:

• Stock
• Tri Through 4 core Silver cable
• Kbear 4 core balanced
Copper cable

The sound I'm about to discuss with you is while pairing E20 with Clarion tips. So if you're using any other eartips with this particular set, my review would be unrelatable.

Sub Bass:

The Sub bass on this is like a fluid. It's fast and never will you feel it's lacking. The notes hit deep. The sub bass lacks body but makes up with the depth. Is fun, engaging and provides warmth to the overall sound spectrum.

Mid Bass:

Again the mid bass is fast as well with a bit more definition and body. It's not that tight but it's well controlled. It's less forward compared to the sub bass. The slams on E20 are definitely punchy but not ground breaking how Bass heads would prefer. Mid bass lacks texture but has enough details.


Overall Bass:

Overall the bass quality is amazing and it's the star of the show. Bass provides a whole definition to overall presentation and keeps up the pace with any track you play.

But if you're a Bass head even such fine bass might not be enough for you as it is well controlled and fast. The boominess you get is from slow and muddy sounding IEMs which is the opposite of what I've just described. Most audiophiles and Bass lovers would like this bass over a bass heavy IEM.


Mid-range:

The Midrange is clean and laid back. The warmth comes from the bass definitely effects the overall mids section. The mids are warm but the warmth doesn't stay long thanks to the fast bass response. Keeping the overall mids clean snd detailed. The Midrange overall isn't that energetic and I'd definitely call it laid back, which many (or maybe most) listeners enjoy.

Male Vocals:

Vocal section is probably the weakest part of this IEM. Regardless the quality of vocal isn't bad but the overall presentation. Has note weight to vocals and decent details. Definitely lacks texture when we're talking about male vocals. It's laid back, but for most genres it's perfectly fine in my opinion. Specially on husky vocals, folk or pop songs vocals shine the most in this set.

Female Vocals:

Female vocals is present perfectly where is doesn't sound harsh but sound delightful. They're sweet and engaging. Most female vocalist sound good on this pair.

Overall Mids:

Overall, the mid section is at a satisfactory level.

It's laid back, so many instruments and vocals doesn't come out as sharp. Yet the bass makes it warm yet clean enough to enjoy the mid section.


Treble:

The treble section is laid back of course but it's not as bad as you might think. It's not forward where you feel every stroke of the electric guitar of every drum hits. But bare with me till the instrument department. The treble in my opinion is presented realistically. It's smooth but detailed and never creat fatigue. The upper treble has no sharpness but the airiness is incredible. I really liked the immersive experience thanks to that.

Instruments:

Instruments like electric guitars sound kinda average. I didn't enjoy metal or rock on them. But except the two genre I've mention, I bet it goes well with every other genre. Any acoustic instruments you name it, they sound soo pleasing. Mostly on folk, jazz and classical. Acoustic guitar, violin, piano, flute, saxophone, ukulele. Except that the instrument separation and clarity is insane for the price.

Soundstage & Imaging:

Soundstage wise it's above average. The width and depth is massive for the price. The imaging is really precise. Most instruments that I listening to for imaging purpose, it could precisely locate each one of them. Even on FPS shooting game locating footstep was a piece of cake. Thanks to the treble being laid back, gun sound didn't bothered me much. But the after effects of grenade (ringing) bothered me a little, I thought it would be worth mentioning.

• If you love fast Bass

• If you like the cable and pouch

• If you're looking for a laid back sound

• If technicalities matter to you

• If you can mannage to get a pair of TRI Clarion Eartips

• If you have a decent source

• If you play fps shooting games


• If you're a Bass head

• If you are a Treble head

• If you're a forward vocal lover

• If you like more energetic sound

• If you don't plan on buying a dongle


For similar price I've tested QoA Gimlet. While I more prefer the sound signature of Gimlet, I think sound quality wise it's a better IEM overall. Specially on technical department it leaves gimlet to dust. Although gimlet is more balanced with better mid-range and build quality.

It's up to you according to your taste and preference. But let me make it easier for you.

Go for gimlet if design and packaging matters. If you're a mids and vocal lover.

Otherwise go for E20 if you're a fast bass lover and technicalities matters to you. Specially if you like acoustic instruments.

There you go, that should make your decision a bit easier.

Thank you for reading all the way. Let me know your thoughts on this IEM.

Keep on listening ·͜·♡

Disclaimer:​

I wanted to try out Aoshida E20 so I bought this IEM with my own money . Aoshida didn't provide me with money or any necessities to review this product.

This will be my unbiased opinion on AoshidaE20. My likes and dislikes on this IEM would be based on my own personal experience.

If you're interested in buying this internationally check out https://www.linsoul.com/ .And if you're from Bangladesh checkout https://geekmartbd.com/

Box Contant:​

IEM themselves
Four-Strand 216-Core * 0.05mm high-purity copper wire
Some decent quality eartips
Storage box
User's manual

Technical Specifications:​

Distort
≤1%@1kHz
Impedance
12Ω+1%@1kHz
Sensitivity
98dB/mw@1kHz
Frequency response
20Hz-40kHz
Dynamic drive
10mm beryllium coated dynamic driver +8mm DLC diaphragm
Wire rod
1.25m,0.05mm*216 strands of copper
Interface
3.5mm plug,0.78 dual pin interface

Test Source:​

DAP:​

Plenue R2
Hiby R3 M2

Dac Dongle:​

Moondrop dawn pro
EPZ TP30
Ddhifi tc44c

Desktop Dac Amp:​

Ifi Hipdac 2
Xduoo XO 05 basic

Some of my thoughts, this thing sounds great with neutral or neutral-warm or in musical sources.

​

Design and Build:​

This thing is praised for its exceptional design and build quality. The plastic shell and aluminum faceplate create a durable yet stylish look. Its open-back design with precision CNC-machined anodized aluminum improves sound quality, providing a more natural and expansive listening experience.

Fit and Comfort:​

It has exceptional fit and comfort. Its ergonomic design ensures a snug fit, making it suitable for extended listening sessions without causing discomfort. They will fit easily most of ears .The ear tips are soft and conform well to different ear shapes, providing a secure seal that enhances sound quality while blocking out external noise. Lightweight and well-balanced, the E20 sits comfortably in the ears, making it a great choice for both casual and active use.

Sound Signature:​

Fun and engaging:​

This IEM prioritizes a sound that's enjoyable and keeps you immersed in your music.

Balanced approach:​

While bass-forward, it avoids overwhelming the mids and highs, creating a well-rounded listening experience.

Good for most genres:​

This sound signature works well for various genres, from pop and rock to vocals-heavy music.

Though you should consider something:​

Bass preference:​

If you crave super strong or boomy bass, the E20 might not be enough.

Mid-forwardness:​

Some might prefer a more balanced presentation between mids and treble.

Treble preference:​

If you enjoy a very bright or aggressive treble, the E20 might sound a bit laid-back.

I think this breakdown may help you to understand the Aoshida E20's sound personality and whether it aligns with your listening preferences.

Overall Sound Impression:​

The Aoshida E20 delivers a fun and balanced sound signature, making it a great choice for many music lovers you can get all this experience without breaking the bank. Here's some of my thoughts . Lately I will try my best to explain it properly.


It prioritizes bass presence. So that , you can hear your music fuller and more impactful . Sub-bass has deeper notes and rumble and mid-bass take care its thump and clarity . I thing I have to mention this while the bass is present, it’s tight and controlld in other words it’s not overpowering. The good is thing of this IEM it adds warmth and energy without muddying the mids or highs. Vocals take center stage. Both male and female voices shine through crisp and upfront, it is like having a conversation with the singer. Instruments which plays in the midrange section like guitars and pianos have their own space in the mix and sound clear. Treble section is on point they are smooth , airy and non-fatiguing . High frequencies are clear and avoids being harsh or sibilant.

Bass:​

The Aoshida E20 brings the bass party, but in a controlled way.

Sub-bass:​

This is the rumbling foundation of your music. This thing delivers a satisfying thump on deeper notes, adding fullness and impact without being overwhelming. Think of it as feeling the beat in your chest on bass-heavy tracks.

Mid-bass:​

This is where the punch comes in. It's mid-bass gives your music a good kick without muddying the sound of other instruments. It adds warmth and energy, making the music feel more lively and dynamic. Though I wanted a bit more thump but it is already enough for most of the people.

Overall Bass:​

This IEM leans towards a bass-forward sound signature, but it's not overpowering. The bass is definitely present and enjoyable, but it stays tight and controlled, allowing the mids and highs to shine through.

Think of it like this:​

Imagine a concert where the bass player is locked in with the drummer, creating a solid foundation for the music. You can feel the groove but it doesn't drown out the vocals or the melody. That's the kind of bass experience you get with this.


Some of my thoughts, my test tracks was Big Boy " Kill Jill " the triple drop was perfect considering the price also it doesn't missed any notes my another track was from Daft Punk "LYTD" slam and thump was amazing .

Midrange :​

This is where the voices and some instruments shine. Both men and women singing come through clear and upfront, like they're having a conversation with you. The instruments in the middle range sound good too, not too loud and not too quiet, all playing nicely together. Here's a closer look:

Male Vocals:​

Vocals are clear and crisp . They also have good amount of note weight in vocals. You'll hear the subtleties and nuances in a singer's voice, from the lows to the highs. if you use it on musical source and use Divenus Velvet tips they will hear a bit more thick and meaty .

Female Vocals:​

Female vocals also come through beautifully. They're neither harsh nor veiled, they have sufficient amount of sparkle and airyness to satisfy most of the consumer. Unfortunately sometimes or in some tracks they heard a bit thin .

Overall Midrange:​

Instruments in the midrange don't get overshadowed by the bass. Guitars, pianos, and drums all have their own space in the mix and sound well-defined.

Think of it like this:​

Just imagine you're at a live show where the singer is belting it out, and the band is perfectly in sync. This thing lets you hear all the details, from the subtle nuances in a singer's voice to the intricate parts played by the instruments.



Some of my thoughts,I tested jim croce " time in a bottle " I can't any issue with it. "Daddy " by Yeal Naim was my another test track for female vocals and it is fine though I wanted a bit thin female vocals

Treble:​

The IEMs treble performance is all about smooth sailing.

Lower Treble:​

This is the area responsible for the initial sparkle and detail in cymbals, hi-hats, and other high-pitched instruments. The E20 handles this well, offering a good amount of detail without being harsh or piercing.

Upper Treble:​

This is where things can get sibilant with some earphones, making sounds like "s" or "ss" too sharp. It avoids this trap. The upper treble is clear and airy, adding brightness to the music without causing any listening fatigue.

Overall Treble:​

The overall treble presentation of this IEM is smooth and well-balanced. It adds some sparkle and air to the music without being overpowering or fatiguing.

Think of it like this:​

Imagine listening to a recording on a clear, sunny day. The highs are there, adding a touch of brilliance, but they don't make your ears wince.



Some of my thoughts, I tested " Back in Black " by AC/DC This IEM handles this track very well.

Soundstage and Imaging:​

The Aoshida E20 isn't typically known for having a super wide soundstage or particularly impressive imaging due to their physical limitations

Soundstage:​

The soundstage refers to the perceived width and depth of the music. Because earphones sit directly in your ear canal, they typically struggle to create a wide soundstage compared to open-back headphones. This thing likely falls into this category.
The thing sound might seem more intimate and focused on the center, like you're listening to the music from speakers placed close to your head.

Imaging:​

This IEM might still offer decent placement of instruments within that space. You should be able to distinguish where the vocals are coming from and the general location of instruments in the mix.

Overall Soundstage and Imaging :​

It prioritizes clear and detailed sound reproduction wide soundstage. This is a common trade-off for earphones. Also it is
Suitable for most genres. You can hear everything clearly. For having good Imaging you can hear from where Instruments and vocals are coming .

Note: If you want a bit more stage you can try out TRI Clarion tips .​

Instruments Separation:​

This IEM might not be the champion of instrument separation but it can handle some really busy track like Queen's " Bohemian Rhapsody " . I don't think so this thing not gonna bother you.

Mobile Gaming Performance:​

Those who wants great sound and good gaming performance in budget they can simply start with this thing. When I was playing games I was enjoying every moment from gunshot to explosion .
Also, for having good soundstage and imaging foot-stape are accurate so you can find your opponent easily and finally cherry on top is it's comfort. You can play a long session with them

Introduction:-

Hello guys. Today I will be reviewing the Aoshida Audio E20. The E20 iem has been made by aoshida audio in collab with lethsuoer. Aoshida audio is an online retailer like Hifigo, Linsoul and Shenzhen Audio. I was really curious as to how these iems were, Because they seem to have an open back design and they cost only $44

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.



Lets Find out!

Buy The Aoshida Audio E20 here (Unaffiliated Links) :-

Aoshida Website - https://www.aoshida-audio.com/products/aoshida-e20

Their Aliexpress Store - https://www.aliexpress.us/item/3256805977077778.html


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

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

---

Build Quality, Comfort and Accessories:-



- They have a plastic shell and the faceplate is aluminium. Also they are open back!


- They have a copper cable which is terminated to 3.5mm


- They are very very light which makes them exceptionally comfortable to wear. I can wear them for hours long!


- The E20 comes with a fantastic case and is apparently made of a bulletproof fabric and the shell of the case is manufactured by a flocking process. I thought it was marketing gibberish, but whatever it is they made a damn good case. It is small and hard and also really pocketable for daily use. Great job Aoshida for giving this case, I can say that the case is easily worth $15-20 in its own and Aoshida so look into selling it separately.


- They are very hard to drive, for a budget iem I would expect them to be easy to drive. But these are surprisingly power hungry.

---

Sound Impressions:-



- They follow the harman 2019v2 target curve almost to the T with the sub bass being pulled down a little


- They have 10mm beryllium coated Dynamic Driver and a 8mm DLC Diaphragm


- There are 2 types of tips available in the box, wide bore and narrow bore. I use the medium sized narrow bore as that gave me a bit more bass.


- I used the fiio btr5, Hiby fc6, Muse hifi M4, Hiby m300, my smartphone with headphone jack.


- This iem pairs very with the hiby fc6 something warmer give it really that overall body it lacks.


- They have absolutely fantastic tone and timbre overall


- They have zero driver flex


- They have no pressure buildup


Bass-


- Having 2DD you would expect it to have a thump punchy bass, well that's not the case here

- The bass although of adequate quantity, the sub-bass lacks that last bit of punch and dynamic-ness. When listening to waltz by sunny it is very apparent. But that lack of sub bass isnt bad at all as the overall iem sounds very clean when heard overall

- The mid bass is and I cannot emphasise is very very very clean! It just sounds right.

- Listening to Looking Up and Galactic Funk by Casiopea the 1985 Ryogoku Kokugikan Live the instruments specially bass sounds really good, I am surprised as to how good it sounds. All the instruments comes across very well for its price point!


Mids-


- The male vocals sounds really good voice of Chris Cornell and Bill Withers comes across surprisingly well for an iem which costs only $50.

- The Female vocals as usual like the harman target could get a bit shouty for some. Hako Yamasaki’s Ano yumi ni and Sakura and Hanawa Sakura by ikimonogakari sound really good, but for some it could get shouty and too much specially at higher volumes.

- The overall vocals sounds very clean!


Treble-


- The treble is the star of the show here in my opinion, it is done very well.

- It is very smooth were and most can enjoy it, even treble sensitive folks. The treble is very clean!

- The treble extension is really good for the price no complaints here


Technicalities-

For the price range these are really average and I have no issues here. When listening to Casiopea live I could pick out the instruments separately and it sounded very sterile.


Soundstage-

Being open back the soundstage as expected is very well and it is apparent when listening to live music


Imaging:-

The imaging is too is really good for the price range



Gaming Test:-

- These perform really well while playing games

- The really good soundstage and the imaging gives me really good sense of the space and I can gauge the footsteps and also the whereabouts of the gunshots when playing FPS.

- While there is lot happening, it does get a bit spicy on the top end and if I am playing at high volumes I might have to pull the iem out.

---

Recommendation:-


- Do I recommend this e20? Tbh in the sea of harman tuned iem it is nice to see something a bit different. Now although the bass isn't to my liking and too many people’s liking it is a very clean sounding iem overall


- Try to use the Divinus Ear tips with these and the mid-bass comes across even well and it goes very well with the sub-bass of this iem. My entire review although done on stock tips I highly recommend these! They sound really good.


- The bass though present falls shorts in terms of punchiness and dynamicness in some songs, but sorry for sounding like a broken record. It sounds very clean.

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Again a big thanks to Aoshida Audio 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

AOSHIDA E20

10MM BERYLLIUM COATED DYNAMIC DRIVER + 8MM DLC DIAPHRAGM
Dual Dynamic Driver Design
High-Precision 3D Printing Chamber
Ergonomic Design
Open Design
Four-Strand 216-Core * 0.05mm High-Purity Copper Wire
High-Quality Earplug Sleeves and case

Technical Details​

Distort
≤1%@1kHz
Impedance
12Ω+1%@1kHz
Sensitivity
98dB/mw@1kHz
Frequency response
20Hz-40kHz
Dynamic drive
10mm beryllium coated dynamic driver +8mm DLC diaphragm
Wire rod
1.25m,0.05mm*216 strands of copper
Interface
3.5mm plug,0.78 dual pin interface



The Aoshida E20 is a collaboration between Aoshida audio and LetShuoer build, and packaging is much like the ARTTI. The 3D printed shell is light but strong and has a nice-looking faceplate, it comes in two color choices silver and gold, but the gold looks more bronze to be honest. The isolation is dependent on fit and for me the fit was very good with the E20 being nice and light. Build quality is on par with the E20s competitors. Acessories are actually plentiful for the cost and the cable is very good for a stock cable. When comparing the E20 to the Truthear Zero the E20 has a more Balanced Harman tuning with better texture and technicalities, while of course the ZERO Blue and Red are more attractive looking and mellow sounding. Out of those I would have to pick the E20 as it has better quallity Bass.

Sound Impressions:
Bass:
The lower frequencies have a well-controlled and textured attack. Sub-Bass has a nice rumble then a fast withdrawal Mid-Bass hits with precision and speed. The Bass has subtle warmth, with fine details and clarity. It's a realy good balanced quality Bass.
Mids:
The Midrange is clear and open sounding with the lower Mids having a tinge of warmth and a medium thickness, and upper mids are a little brighter but far from too much. the two strike a well balance giving both Male and Female vocals a fine tone and engaging amount of focus. Vocals are more centered just in front of instruments and the separation between them are defined nicely.

Treble:
The Highs here are nicely done, there is a decent amount of air and sparkle, the Treble has a natural detail and decay with an almost BA quality. No harshness up top with very good energy, I found it well done indeed.

Soundstage ETC:
Soundstage here is wide with an equal amount of depth and imaging was also precise and could be used for gaming.

Conclusion and afterthoughts:


The Aoshida/ Letshuoer E20 is a good budget offering. It has a good number of accessories to get started and offers an exciting but Balanced signature with good technical abilities and enough fun. Comparing it to other Dual drivers, I find this my favorite Dual DD so far.