General Information

LETSHUOER DZ4 – a different breed of dynamic driver IEM.​


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  • Three dynamic drivers + single passive radiator in-ear monitor HIFI earphones.
  • Four-way Acoustic Tubes, Two-way Crossover Circuit.
  • Semi Open Faceplate Design, A Fusion Of Metal And Resin.
  • The drivers are connected to the dual-pin receptacle via a flexible printed circuit (FPC) crossover board.
  • Joint Effort With HeyGear, The Leading 3D-Printing Supplier
  • Four cores of 216-strands, 0.05mm in diameter silver plated copper cable.
  • DZ4 comes with a standard 3.5mm single-ended plug, featuring a standard 0.78mm dual-pin design.
  • High precision in 3D Printed chassis production to meet ergonomic principles.
  • CNC-milled anodized aluminum casing with semi-open design.
  • Its outstanding sound performance brings exceptional adaptability and compatibility, catering to various usage scenarios from music reproduction, gaming, to basic monitoring needs.

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Packaging and accessories:
  • Earphones
  • Carrying case
  • Two types of ear tips in three sizes each
  • Silver-plated copper cable
  • 3.5mm single-ended plug
  • Warranty card and instruction manual
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Specifications:
  • Sensitivity: 104dB
  • Frequency response: 20Hz - 40kHz
  • Impedance: 12 ohm
  • Chassis material: 3D printed resin
  • Cable: 1.2m silver-plated copper
  • Drivers: triple 5mm titanium dome DD + 6mm PR (passive radiator)

Latest reviews

smexxy

New Head-Fier
LETSHUOER DZ4 Review!
Pros: - Lightweight IEM. Has a nice matte finish to the base(3d printed resin)
- Metal Faceplate with an orange Z gives the impression “hey, this is the DZ4”.
- Very flexible cable, doesn’t make noise when moving around and does not tangle.
- 3 pairs of ear tips(S/M/L and has two configurations, Balanced and Vocals)
- High quality twist on carrying case.
- Male and Female vocals are ‘colorful’.
- Separation between main, secondary and background vocals are defined and distinguishable.
- Good amount of mid-range, giving more life to the music.
- Cleanliness is maintained even in higher volumes. No distortion.
- Good Sound staging, imaging and depth.
- Instrument strums and strikes are well defined.
Cons: - Carrying case gets smudged easily.
- Sound staging, imaging and depth could be better.
- Not suitable for bass heads.
- Bass is there but not enough and sub-bass is lacking.
Quick Disclaimer: I'm beginner and just casually listen to music without thinking much about it. I may use terminologies that are more personal but will do my best to describe it. These are also my own opinions, I did not read any reviews prior to making my own(basically going in blind) so if you have your own comments or perhaps any feedback regarding my review or the IEMs, please don’t hesitate to share your thoughts.

The gear I’m using is just really simple: ASUS TUF Laptop, Roseselsa 9039 Amplifier and DAC(review coming soon!) and the LETSHUOER DZ4.

Big thanks to LETSHUOER for sending the DZ4 to our local community for the review tour. Looking forward to working together with you!

I’d also like to extend my thanks to Sir Mars, Sir John and Jhetner for giving me the opportunity to be part of the review tour and extend a helping hand in writing reviews and testing the gears, without them I would not be making this review. I cannot thank you guys enough.




So let us begin.​

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The LETSHUOER DZ4 is definitely a game changer; if you’re a newbie/beginner like me and just casually listen to music without the technicalities you’d probably think that a 69$ IEM wouldn’t make any difference and you’re better off spending less than 20$ but oh boy I was wrong. This is one of those rare occasions that money does indeed go together with quality.



The Unboxing Experience​


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The outer box sleeve has Z which goes well with the fact that this IEM is called the “DZ4”; it's even textured on the orange parts so plus points for that.
The Hi-Res Audio certification is also present so you know that you’re in for a treat; unlike the IEMs that I’ve bought(Salnotes Zero, Wan’er, Chu 2 and Castor Bass), they don’t have the Hi-Res certification but still sound great otherwise.

Flipping the outer box sleeve over you can see specs of the IEM. From the frequencies, impedance and build material.
No frequency response graph was included though which isn’t a big deal but is needed for a better reference in case you need to compare it to different IEMs and their sound signature.

Unboxing feels like a brand new iPhone, the IEMs and the carrying case are the first to see and inside the case is where the cable and ear tips are stored. I do appreciate that they included a strip of velcro to not only to keep the cable from unwinding but also keep the IEMs stored neatly should you put them aside for a while.

I'd also like to mention that the IEMs have a metal faceplate and the chassis/shell is 3D Printed Resin which gives it a nice matte finish.

At first I thought the carrying case was made out of metal but it's made out of plastic though it doesn’t feel cheap and inside the case has a thin layer of rubber.
The only thing I dislike about the case is that it smudges easily and cleaning it doesn't seem to restore it back to it's flawless state.

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Specifications​


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Sensitivity: 104dB/mw(@1kHz)Impedance: 12ohms +_ 1%(@1kHz)
Frequency Response: 20Hz-40kHzDistortion: _< 3%(@1kHz)

Cable is 1.2m 0.05m*216 silver-plated monocrystalline copper.
And the IEMs are equipped with three(3) 6mm titanium dome dynamic drivers and a 6mm passive radiator.



Listening Experience​

The DZ4 is like hearing music within music(if that makes sense), the statement “you get to hear a different dimension” applies in this case. Have you ever had the experience when using higher quality headphones you'll hear some parts of the song you've never heard before? Yeah it's that feeling. While it doesn’t make you hear celestial beings or the 5th wall, it opens a new gate when listening to music and gives it more dimension.

Wearing the IEMs for a long period of time doesn't cause any fatigue, the weight and fit of the chassis adds to the listening experience that you don't have to constantly adjust because over time it gets loose.

The flexible cable doesn't tangle even if you roll it up loosely or tightly, it unwinds very well; did I mention that it doesn't make noise as you move around? Gone are those days that you hear the cables brushing over your shirt or the surface and just focus on the music.

Instruments really pop off in these IEMs, it’s as if you’re in the studio when the band is playing. You get to hear the strums and strikes which adds to the immersive experience. You’re not only just listening to the music, you’re actually there when the music was recorded; which is something I would describe this feeling.

The Treble and Mid-range frequencies are on point, even if the volume goes up there is no audible distortion and doesn’t hurt your hearing(though please listen at safe levels).

Sound staging, imaging and depth are also worth mentioning here since there is a decent amount but could be improved; you’d have to go back and forth looking for the right song and listen closely which I find a bit of a hassle but when you do then you'll know the difference. I guess that’s the “different dimension” I was talking about.

As a bass head I can say that there is a minimal amount of bass but lacks in sub-bass, you won’t get that "feel" that would shake your eardrums but is enjoyable to listen to. While some songs do have a punchy bass, the IEMs don't make up for it.

My standards have definitely gone higher after using these since I only have experience with budget IEMs within the 15 to 25$ range, spending a little more will yield different results and this is one where it is super worth spending more.

Again I would like to thank LETSHUOER for sending these over to our local community for a review tour and giving everyone a chance to listen to this 69$ IEM and compare it with the other IEMs in line for review or the existing ones we've bought.

Cheers and happy listening!

MuddyCrab

New Head-Fier
DZ are not so nutz but that's fine | DZ4 Thoughts

Disclaimer:​

I’m more of a Tech head than audiophile and I use Youtube Music for 99% of my listening. Take everything I say with this in mind and please don’t come after me for not having refined taste. This is purely from my silly little point of view, of which you might be interested in.

Gear Used:​

Streaming Platform: Youtube Music Premium (Bitrate: 256kbps AAC & OPUS)
Dongle: USB to Lightning JCALLY JM08L

Box:​

For $89, everything is there. A small box with all the fixings inside, I’d rather have these compact packages with everything inside to be honest. It makes it easier to keep the box while still being able to appreciate it. They come with a hard plastic circular case with a screw on top which is honestly a first for me. I wouldn’t call it impractical but as a carrying case it definitely becomes a point of friction if you plan to store and bring the IEMs around in them. The whole plastic case also has the matte black finish on it which I know will just love oily fingerprints and marks on it. I still prefer my little carrying case with all my dongles than the included one but if these are your first pair I suggest you look for a more practical alternative than having to unscrew your way to your IEMs everytime you just want to chill at a cafe. Definitely more of a storage box than a carrying case.

Inside the case there are also the included ear tips in this circular holder of sorts which is cute but definitely takes up way too much space. It comes with 6 pairs of tips, 3 sets for a white set which is soft and another 3 for a stiff set. I ended up using the soft set since it provided the nicest seal for me while being comfortable as well. This will obviously vary from person to person, but it was a little fun going back and forth between the sets dialing the fit down for maximum comfort.

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Build:​

After holding and feeling the pair for the first time (😏) what immediately came to mind was the initial confusion as to what the actual material itself was. It honestly felt like one of those magnesium alloy built the same type they use in more expensive laptops because of how lightweight it was while seemingly still being metallic-ish. Although after checking the specs I found out it’s actually resin 3D printed for the inner shell and aluminum for the outer side. It’s honestly pretty cool that something of this footprint can weigh this much. I don’t know if this 3D printed resin is a newly used material in the IEM space but if it leads to cool outcomes like this then I’m all for it.

The included cable is this nice metallic silver looking braided cable that’s got this inner foil like material inside it. It matches the pair pretty nicely and it’s not noisy or heavy at all so if these are the only cables you have then I don’t see anything wrong with them for day-to-day use.
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Sound:​

The main thing I appreciate about these are guitar strings and higher register.The guitar strumming in Chivalry is dead - Trevor Wesly can be clearly heard and appreciated. The drums do sound a little lackluster but still there, nonetheless.

The backing vocals sound especially crispy in Missin You Crazy - Russ. These seem to be very good within that range of vocals being clearer and not missing any details in place of a deeper bass. So if you’re an official bass head then these probably won’t do it for you but if you like to lay down a bit of country and folk then these might be your partner.

Honestly the tuning itself isn’t for me but I can appreciate it in certain songs, nonetheless. While the overall sound stage is very nice, I can't help but feel this sense of distance from me and the sound itself. Not sure if it’s an actual feature but there are some song vocals that sound like they have this layer in between them and the mic. Either that or it’s because certain things just sound so more pronounced that it puts certain ranges on the backburner.

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Nitpicks:​

My biggest personal gripe with these is for how lightweight they are, you still feel very aware of them while wearing them. I don’t know exactly what it is, it might be the fit or the overall shape, but these just don’t disappear after a minute. Fitment is comfy overall, and they create a good seal for me but every time I wear them, I can’t help but be very present with them. The best way to describe it would be if you’re suddenly aware that you’re breathing and now you’re breathing manually (I bet you just did).

Final Thoughts:​

If you listen to a lot of Pop or EDM then these might not sound very fun to you but if you’re on the flipside of that spectrum then I don’t think you’ll find a lot of things to complain about what you’re getting for the price. I do think that this price point is extremely competitive right now and these don’t exactly offer anything outstanding aside from the unique-ish material choice. But if you thought they looked nice and already ordered them then rest easy because these won’t break your heart like that girl that every country singer seems to talk about in the back of their F150 pick-up truck.

But remember, music is a personal experience, and you should find the gear that makes you enjoy your music the most regardless of what a graph says.

jreqtech

New Head-Fier
A Casual's Review of the DZ4
Pros: - Great build quality!
- Bass and Details are ok-ish
- Not fatiguing to use, very comfortable for me
- Nice cable and lots of eartips are always appreciated
Cons: - Soundstage is unremarkable
- The mids sound a little too high for me
- Carrying case is not really great for carrying, but is great for storage
Disclaimer
Please note that I am not an audiophile, and this review does not delve into the technical aspects of the IEMs. My impressions are based on my personal preferences, and others may have different experiences with this product. I also have a very limited experience with audio products so please take this review with a grain of salt.

The Letshuoer DZ4 was lent to me as part of a review tour in the Philippines.

Price: 69 USD (nice 😏)
Link: https://letshuoer.net/products/lets...sive-filtering-module-edc-hifi-in-ear-monitor

Part 1: General Product Details

Package Inclusions:
  • IEM shells & cable
  • Carry case
  • 6 pairs of eartips
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The IEM Shells
  • The shell body is made of a flesh-colored plastic. The plastic does not feel cheap. The faceplate is made of a rose gold-ish colored metal with a lightning bolt-like opening (a stylized “z” perhaps?), revealing an orange mesh inside.
  • The earpieces weigh ~5.2g. They don’t feel heavy despite being about 2g heavier than my daily drivers
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The Carrying Case
  • The carrying case is a small round cylinder with a twist-to-open lid. The lid has the name logo of Letshuoer front and center.
  • The carrying case is made of a matte plastic covering material that is prone to marks, so you have to be careful or you might scratch it easily.
  • It is also very bulky as a carrying case, weighing at 76g and has a dimensions of 8cm x 8cm x 3.5cm. I think it would be better called a storage case
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The Cable
  • The cable is pretty good! It doesn’t feel cheap at all, and is wound and braided very well. There are no kinks or bends to it and does not tangle easily. It has a straight 3.5mm jack at the end.
  • The cable has a Letshuoer-branded cable tie near the jack. Though is nifty, I wouldn’t want to use it as it keeps getting caught on my deskmat, pulling out the stitches. It’s a good thing it is removable.
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Part 2: Subjective review
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General Usage Impressions

  • It fits perfectly, even a millimeter more and it would become too tight for my ear canals.
  • I can definitely use these for long periods of time without being fatigued easily

Sound Impressions
  • There’s some soundstage in the DZ4, but not enough to give you taht “airy” feeling, or immersive experience
  • The tuning seems to be brighter, good for vocal tracks but I’m not really a fan for this sort of tuning.
  • I need to bring up my volume higher than normal to get a good bass rumble, but when it’s there, it’s good.

Final Thoughts

The DZ4 is an okay IEM for its price. It gives great value with its good quality build, carrying case, and the freebie tips.

Will I buy the DZ4? Frankly, no. While I’ve only tried listening to a limited number of IEMs, I’m pretty sure the DZ4 has a lot of competition in the same price range that will fit my preferences. Still, I think it will fit many other peoples' preferences so this still gets some high points from me.

Besides, after coming from the Project M and Pilgrim, it definitely made me want to hear more of those kinds of IEMs.
🤣


PS: Thanks for the free candy! 😂
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