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Moondrop

Moondrop CHU II High Performance Dynamic Driver IEMs Interchangeable Cable in-Ear Headphone

Based on 4,355 reviews
Condition: New
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$22.99

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Arrives Saturday, Oct 31
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At a glance

Condition
New
Weight
3.87 oz
Color
Black
Ear Placement
In Ear
Impedance
18 ohm
Age Range Description
Adult
Mfr Part Number
MOONDROP-CHU-II
Warranty
1 year manufacturer
Works with
Cellphones, Laptops

Features 5

  • Aluminum-Magnesium Alloy Dome Composite Diaphragm As a dome diaphragm material, AI-Mg alloy exhibits high rigidity and light weight, thereby extending the treble bandwidth and revealing more subtle details. The diaphragm suspension is composed of two polymer materials with differing characteristics,resulting in a punchier bass and greatly reduced nonlinear distortion.
  • Alloy Casting Cavity Ensuring Durability and High-Quality Texture The acoustic cavity of theCHU IIis manufactured using MOONDROP's mature alloy casting technology, ensuring both rigidity and fine texture. A durable paint layer protects the metal shell from corrosion.
  • Brass CNC Acoustic Nozzle The nozzle of the "CHU II" consists of a separate brass CNC component, offering higher precision and density, and resulting in beautiful timbre.
  • Replaceable Acoustic Nozzle "CHU II" incorporates a new generation of replaceable acoustic filters. The front end of the brass nozzle is detachable, allowing users to replace the acoustic filter quickly and conveniently.

Description

As a dome diaphragm material, Al-Mg alloy exhibits high rigidity and light weight, thereby extending the treble bandwidth and revealing more subtle details. The diaphragm suspension is composed of two polymer materials with differing characteristics, resulting in a punchier bass and greatly reduced nonlinear distortion. The acoustic cavity of the “CHU Il” is manufactured using MOONDROP's mature alloy casting technology, ensuring both rigidity and fine texture. A durable paint layer protects the metal shell from corrosion. The nozzle of the“CHU II” consists of a separate brass CNC component, offering higher precision and density, and resulting in beautiful timbre. “CHU II”incorporates a new generation of replaceable acoustic filters. The front end of the brass nozzle is detachable, allowing users to replace the acoustic filter quickly and conveniently Replacement is far easier compared with existing multi-layer filters, and the design makes for greater reliability.In the event of blockage or damage, the cost is much lower than that of standard nozzles. “CHU Il”uses a universal 0.78mm interchangeable cable, allowing users to replace the cable or make use of Bluetooth neckband/TWS ear-hooks for different usage scenarios. - Tips for Headphone Cable Installation - In order to avoid poor connection or unstabitily during use, the cable is tightly connected with earphone socket. When plug or unplug the cable, please hold the cable terminal and parallel to 0.78 2pin. Do not rudely install the cable to prevent the headphone or cable from damage. The MOONDROP corporate philosophy is “Constant innovation based on science and technology, and the improvement of services for the benefit of the consumer." The company is committed to breaking through the technical barriers of the industry, applying advanced technology to electronic audio equipment, and integrating high-quality audio systems into smart wearable devices.

Specs 37

Brand Moondrop
Color Black
Ear Placement In Ear
Form Factor In Ear
Impedance 18 ohm
Brand Name Moondrop
Model Number MOONDROP-CHU-II
Model Name CHU II

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 31

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View our full returns policy here.

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Similar Products

Top Amazon Reviews

Moondrop Chu II
I got the Linsoul 7Hz Salnotes Zeros about a year ago as an upgrade from basic budget earbuds, and have enjoyed them. I wanted a second IEM so one could be for at-home use and one could be for carrying around. I find the audiophile rabbit hole fascinating, but have difficulty hearing and describing characteristics in audio that might be apparent to those folks. So I wanted to try a different IEM and see if I could hear differences from the Zeros. I went with the Chu II's because of the reputation of the original Chu's, and initial YouTube reviews of the Chu II's were quite positive. I've been using the Chu II's at home and carrying the Zeros around. I haven't attempted to A/B them for a careful comparison, so all I can say right now is that I enjoy them both. As far as I can tell, they both have an even response with good presence and are not lacking in bass. Neither have an overpowering bass or a shrill treble to me. The shape of the Chu II shell is a bit more comfortable, and they look a bit more streamlined than the Zeros. Chu II also has a metal shell in comparison to the Zero's shell which is mostly plastic. The Chu II cable has a nice silver color in a clear sleeve and is a bit more pliable than the Zero's braided copper cable. The plug on the Chu II cable is L-shaped while the Zero plug is straight. Both the Chu II and Zero are very easy to drive and work well plugged into a DAC (which is a Scarlett Focusrite Solo for me) or a standard 3.5mm jack from a phone or laptop. Many reviewers seem to prefer the spring tips that came with the original Chus. The Chu II's come with basic tips of varying size. I use the ones that fit the most snugly and they seem good to me. The Zeros and Chu II's seem to be safe budget-friendly choices for a first IEM or to have a few handy. I like them both and don't see one as a clear winner. Perhaps I will give a slight edge to the Chu II because of the look and ergonomics. There are a bunch of other highly touted budget IEMs on the market right now too: the Kiwi Ears Cadenza, Tangzu Wan'er, the Truthear Hola are three that come up a lot. I'm thinking that these also might be safe choices, but that's it's not necessary to acquire all of them because they won't be so different sounding from each other. It would be useful to listen to them side-by-side and somehow be able switch back and forth without delay, but I'm not sure if that is physically possible. Update (10/28/2024) After about one year of regular use, the right IEM suddenly stopped producing sound. These are the IEMs I use for home listening, so I have treated them very delicately. I noticed that this was a recurring issue in other reviews and did some troubleshooting. First I swapped the left and right shells to the opposite sides of the cable; the right IEM was still the one with no output. Then I tried removing the filter from the right IEM and putting the tip back on with no filter (very briefly). The output seems to be normal, so I think it is definitely a filter issue. There was a bunch of gunk on the filter, including some blue stuff (blue ear wax?), so I tried cleaning it with 91% isopropyl alcohol and some q-tips. The filter is a thin piece of metal and an a tiny sheet of paper housed inside of a round enclosure. I gave both of them a good swabbing, and they both appear to be significantly less gunky. After replacing the original filter, the output has improved significantly, maybe to about 50%. I rummaged through my saved box collection to see if I could find the Chu II box in case it had some extra filters, but I can't seem to find it. I think replacing with a new filter will bring the output all the way back, but I'll post an update if I try it. ... show more
Reviewed in the United States on December 25, 2023 by AR1
Great IEMs for gaming at this price
I’ve been really impressed with these IEMs, especially considering the price. They sound really good for gaming, with clear audio that makes it easy to hear footsteps and other sounds around me. The sound is also enjoyable for music and videos, so they aren’t just useful for gaming. They’re lightweight and comfortable to wear for longer sessions, and I really like that the cable is interchangeable. The build quality feels good for the price as well. If you’re looking for an affordable pair of IEMs mainly for gaming, I think these are a great option. You get really good sound without having to spend a lot of money. Definitely happy with them. ... show more
Reviewed in the United States on September 11, 2026 by Angel Rivera
Solid pair of IEMs, nothing special
Solid sound quality, was a little finicky for a little bit, with low bass and sharp treble, but I fixed it with an eq. I've heard of corrosion problems with these, but since I live in a dry environment and keep them in a case with some water absorbent pellets I think it'll be fine. Only problem is the medium eartip is too small and the large is too big for my left ear (asymmetrical ear gang). The value is quite good for what you get, nice design overall ... show more
Reviewed in the United States on September 21, 2026 by Zach B
Great quality, inexpensive IEMs
I purchased these after my pair of noname IEMs died, since they're the top selling pair on amazon under $25. I use these to edit a podcast, and they work great and are pretty transparent. For the price, these things are an unbelievable deal. They sound great with both music and spoken word, they're comfortable for extended wear, and the all-metal housing is really sturdy. The cable is also really nice - it's thick and doesn't tangle easily. When these die, I'll probably just get another pair since I don't really want or need anything else. My only complaint is with static - it's winter when I'm writing this, and with the air being really dry, these have a tendency to give a very slight, occasional static shock when your ear touches the metal body. It doesn't hurt but you can hear it and it just kinda feels weird. Is it a dealbreaker though, absolutely not. Also, very minor thing, what's up with the anime girl on the packaging? It's kind of embarrassing when you just want some headphones, I get that some people like it but it's a super weird branding choice. Update after 8 months of almost-daily wear - I typically wear these in an office with only one ear in so I can hear what's going on around me, and I've noticed that the left ear (the one I would wear most often) has dropped in volume by about 80% while the right ear is perfectly fine. No idea what caused it, it just happened one day. I'm not dinging it any stars since it's still a crazy value for the quality you're getting, but don't expect too much longevity out of these if you wear them frequently. Update after over a year of near-daily use - these unfortunately died on me a couple of weeks ago. Wearing them in only one ear at a time, I noticed that the ear that I would favor would slowly diminish in volume in the last two weeks of its lifespan, and at a certain point it would fully die on that side. Then I'd switch to the other side, extending its life a few months, but the same thing eventually happened where the volume would gradually lower until it stopped working entirely. I decided to branch out and try a new set after these (the Linsoul Salnotes Zero) and the Moondrops are far and away the best build quality I've found in this price range. Sound quality is similar with decent clarity on both, but I noticed that these are tuned with a bit more bass and slightly more high end detail. So if you're using these in a studio or editing situation, I would maybe look for a pair with a flatter response. Otherwise, if you're using these for casual listening or really anything else, they'll sound great and last you a little while before you have to replace them. ... show more
Reviewed in the United States on December 19, 2024 by Jon N.
Small Earphones, Big Surprises
As someone who's steered away from headphones while gaming or doing office work, I've grown accustomed to wireless, Bluetooth earbuds lately, but I grew up with wired IEM earphones. Seeing the price point of these earphones and various glowing reviews across social media, I had to try these out, and they surely didn't disappoint! The earbuds themselves are a snug fit for me, even with the biggest size of the provided silicon tips, given I have pretty large ears. The cord is not very long, but that's perfect for travelling around with them for my phone or Steam Deck. There are converters you can purchase separately to convert the 3.5 mm Jack into a USB-C connection for your smartphone or Steam Deck if you so choose. The metal casing for each earbud was nice to see, with the quality of the materials being quite surprising for a $20 pair of earbuds. The black and gold paint is very sleek, while the almost silver transparent cord is nostalgic to the early 2000s, which is honestly a nice touch. Connecting the detachable cord connection to each earbud was simple, with the instruction manual detailing how they should be connected with care so as to not break them or plugging them into the wrong earbud, as the cord connections and earbuds are each labelled Left and Right. The provided pleather pouch is much appreciated for simple storage of these earphones, though initially putting on the silicon tips was tougher than expected until I looked up how to do so without breaking anything (turn the silicon tips inside out, put about half of the inner part of the tip that looks like a cylinder on the brass part of the bud, then twist/push slightly until it all sits flush on top of the brass part, then push the dome around it all). Do not unscrew the brass caps of the earbuds, as the diaphragm can fall off. The seal is tight, with the cord wrapping around from the earbud inside of your ear to your outer ear, as the illustration card showcases. I tested out the Moondrop CHU II with a particular album - Melanie Martinez' album "Portals" to see if these earphones would muddy the music. Shockingly, these earphones picked up various little sounds and details in the songs without muddying anything, with the bass being punchy enough while Melanie Martinez' voice rings clear and crisp above it all. The bass isn't a subwoofer in your eardrums, which I'm very happy with, but if you're looking for a bass-heavy pair of earphones, the Moondrop CHU II tends to spotlight the treble and voice more. Overall, I'm quite surprised and happy with them! I'm excited to continue using them for music and gaming alike. ... show more
Reviewed in the United States on July 12, 2025 by DapperTetu
Great, but not perfect
The sound quality is great for an IEM in this price range. They are comfortable to wear. The metal housing of the IEM is far superior to plastic or resin types and have held up to abusive conditions very well. The connectors are rugged and also very rugged. There are only two issues that I have had and could do with some improvement: 1. plan on purchasing a set of the replaceable ear nozzle filters because the mesh is too fine and they tend to get clogged with earwax. I noticed that one side sounded more muted over time and replacing the filter solved the issue but only temporarily until it happened again. Apparently, this is a very common complaint. 2. The cable is made with a vinyl type of plastic, and it is prone to developing cracks over time. If your listening environment is casual then it's not likely going to present a problem, but if your usage involves a lot of flexing of the cable (exercise, work, sleep) then don't expect them to survive very long. Mine developed multiple tears and cracks after about a month of use and they are now being held together with bits of electrical tape. I suspect that the material they use loses flexibility and/or becomes brittle over time or just can't handle bending or stretching beyond a certain point before it tears. ... show more
Reviewed in the United States on October 21, 2025 by MA
My new favorite headphones
Review Image by Brandon Kleeman
Review Image by Brandon Kleeman
Review Image by Brandon Kleeman
Review Image by Brandon Kleeman
Review Image by Brandon Kleeman
Review Image by Brandon Kleeman
I will be comparing these Chu 2s ($19) to the original Chu's ($20-22), the Tanchjim Zero's ($15-16), and my Gen 2 Airpod Pros ($200-250). I wouldn't call myself an audiophile, but I do enjoy hunting for great affordable sound under $40 and comparing the results. I tend to prefer headphones that have a more flat and balanced sound, in short nothing that has too much added bass. THE SOUND QUALITY: The highs and mids sound on par with the original Chu's and the Zeros (which I found traded blows in sound quality, I couldn't crown one better than the other). Vocals and instruments in that range are very clean, clear, and pleasant. Where these differentiate from its predecessors are in the bass and lows. The sound feels more impactful while not being overbearing or muddy. It has a little more flavor than a balanced flat sound signature but it doesn't overdo the lows. The original Chu's and the Zeros can feel a little lifeless on bass-heavy/prominent songs so I would tend to switch to my AirPods when listening to those types of songs. With the Chu 2s I don't feel that need. The bass feels on par with the Airpod Pros 2 (which is fairly clean) while the highs and mids sound better and clearer in my opinion. The bass sound profile isn't exactly the same as the AirPods, but the difference is too small for me to be able to put into words how they differ. Overall, if I want to use a pair of headphones with the best sound quality capable of listening to any genre of music then I would use the Chu 2s over my daily driver Airpods Pro Gen 2. Otherwise, if I specifically want to decrease the emphasis on the bass for a particular song then I may switch to the Zero's or original Chu's. THE TIPS Personally, I prefer the white Spring Tips ($13 after market for a single size) that come with the Original Chu's. They are slightly more comfortable and way easier to remove than the ones included with the Chu 2s. The Chu 2s tips are nothing special. They are not bad, but they aren't note worthy either. The Zero's come with similar tips to the Chu 2s, but with way more options in terms of shape and size. You are pretty much guaranteed to find a size that fits well if you get the Zero's. The Zeros also have various size diameters in the hole which I assume is to achieve different sound signatures, but my ears are not sensitive enough to pick up on any changes. I included an image that showcases all the tips included with each pair. THE CABLE AND FIT The Chu 2s win this hands down in my opinion. First off its removable so its easy to replace. It also has a firm soft plastic around where it grips on your ear which makes it obvious on how these are meant to be worn and are quite comfortable. This cable helps negate the downgrade in the tips. It comes with a right angle audio jack. If that doesn't work for your device then you can always swap the cable. The original Chu's had a comfortable fit without the included rubber guide, but selecting the microphone option definitely degraded the comfort for me. The rubber used on the cable could be a little unrully at times. This also has a right angle audio jack. The Zeros are the lightest being all plastic and thus take a little longer to put on properly in a way that comfortable (they also lack an L+R indicator which doesn't help the process). This is the only option with a thin straight audio jack so it will work will if you need to plug it into a recessed port. This product definitely feels the cheapest (which it is by 20-25%) out of the three, but I wouldn't call it bad. REPAIRABLITY Both the Chu and the Chu 2 have filters that can be replaced. You can tell they need to be replaced if the audio becomes quieter in one ear. A replacement set of filters will run you around $5. The Chu 2s also have the replaceable cable which makes them the clear winner in this category. TLDR All the IEMs listed are excellent in this price bracket and hit well above their weight. The Chu 2s are the most versatile and sound great with any genre of music and are also the most repairable. ... show more
Reviewed in the United States on September 8, 2023 by Brandon Kleeman
my favorite iem and the most comfortable i have tried
the moondrop chu ii are the best bang for your buck and the safest purchase i think anyone can make as an entry into the iem world. they are easily the most comfortable iem i have ever used. there is no cord microphonics unlike my sennheiser ie200. while my ie200 are basically invisible once you get a good seal, it can take some effort to get that good seal which can be annoying. not with the chu ii! these seal so easily it's shocking. i'm extremely picky about seal comfort and unfortunately even these sometimes feel squishy with jaw movement in the ear - but i purchased dunu s&s eartips and that resolved the issue. now the buds are perfect. i would not recommend these for side sleeping despite what some might say. maybe you use smaller tips than me (i use medium) and insert deeper which allows you to do so, but in my experience when these press on the pillow they block all sound from that side. not only that, but these are too fragile for side sleeping compared with something like shure se215 or sennheiser ie200. i have seen enough photos of broken chu ii on reddit to say confidently - do not sleep in these. the sound is all around incredible for the price. yes they aren't as good as my ie200 but those are like 5x the price! these are just so good in every way i could gush about them for hours. buy them! ... show more
Reviewed in the United States on September 10, 2026 by Colin
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