Kefine Klean
10mm DLC Diaphragm Dynamic Driver HiFi IEM
- Recommended for Professionals
- Recommended for Audiophiles
ForCritical listening/Travel & commute/Gaming
Recommended products
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Optional pairings. A cable and ear tips are already in the box.
Overview
The details behind Kefine Klean.
Superior Sound Quality with DLC Technology
The Kefine Klean earphones utilize a state-of-the-art 10mm dynamic driver featuring a diaphragm made from diamond-like carbon (DLC). This advanced material not only ensures remarkable clarity and detail but also extends high frequencies, providing a transparent and clean sound signature. The natural and musical audio profile includes powerful bass, warm mids, and smooth treble.
Robust and Durable Construction
Crafted with an alloy casting housing, the Klean earphones ensure consistent sound quality and stability. The durable build is reinforced with a screw design that prevents damage from adhesive failure or external force, promoting longevity. Polishing after casting provides a smooth and refined finish, enhancing the overall aesthetic appeal.
Comfortable Ergonomic Fit
Designed to contour to the human ear, the Klean earphones provide exceptional comfort for extended wear, ensuring a snug fit that enhances the listening experience.
High-Quality Silver-Plated Cable
Equipped with a high-purity silver-plated copper wire, the Klean cable features 18 strands per core for a total of 108 wires, promoting a clean and transparent audio signal. This robust cable design facilitates wide compatibility with aftermarket options through a 0.78mm 2-pin detachable connector.
Versatile Tuning with Interchangeable Nozzles
Klean earphones come with two interchangeable nozzles, each designed with distinct tuning systems to cater to different sound preferences. The silver nozzle offers a warm, smooth sound, while the black nozzle delivers a higher resolution with brighter, more transparent tones. This feature enhances versatility and allows users to easily adjust their listening experience. The threaded design makes swapping nozzles quick and convenient.
Technical details
- Driver configuration
- Single Driver
- Driver technology
- Dynamic Driver
- Included plugs
- 3.5 mm, USB-C
- Fit size
- Small
- Tuning profile
- U-Shaped
- Sound color
- Bassy & Bright, Bassy
- Suggested genres
- Pop, Hip-Hop & Rap, Vocal-focused music
- Driver Type
- Dynamic Driver
- Driver Size
- φ 10 mm
- Frequency Response
- 20 Hz - 20 kHz
- Sensitivity
- 107 dB ± 3 dB
- Impedance
- 32 Ω ± 15%
- Cable Length
- 1.2 m ± 0.2 m
- Plug Size
- φ 3.5mm SE
- Weight
- 10g (per side)
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Customer reviews
What listeners say about sound, fit and everyday use.
Customers praised the sound quality as "amazing" and "clean" with excellent detail, noting comfortable fit and premium build. Many called it the "best under $50." However, some reported durability concerns with nozzle mesh moisture accumulation causing volume imbalance, and comfort issues during extended wear.
As my first IEMs, I am genuinely impressed with the Kefine Klean.
They are incredibly comfortable and fit the shape of my ears very well. The build quality feels excellent, and I really appreciate the attention to detail, especially the interchangeable nozzles that let you slightly adjust the listening experience to your preference.
For gaming, they have been fantastic. Directional audio is very clear, making it easy to tell where sounds are coming from, and the overall sound quality is a noticeable upgrade from my previous headset.
If you're looking for a great entry into the IEM world, I can highly recommend the Kefine Klean. For the price, they exceeded my expectations.
5 stars from me!
I'm facing this problem, it's not like a problem but more of a favour. In my country, if i wanna order something from abroad, I usually use Shein or Temu as they have no shipping costs or negligible shipping costs. But as these Iems are not available on both of those sites so I'm left with other choice but to order from here but the issue is shipping cost is absolutely bonkers. Like if my order was of 100k+ then i wouldn't mind paying 14k shipping cost, but in this scenario, shipping cost is more than even the cost of the product. Can i get some help regarding this?
Thank You for the time and help
Hi there,
Thank you very much for your feedback. We fully understand the inconvenience caused by the high shipping cost.
At the same time, we hope for your understanding that shipping fees are calculated based on multiple factors. Therefore, costs may vary significantly depending on different destinations. We fully understand your concern regarding the high shipping cost, but we are also quite constrained by the higher fees required to ship to your country/region.
We will continue communicating with our logistics partners to optimize shipping solutions and try to provide more cost-effective options to reduce the burden of shipping costs for our customers.
You can also review our shipping policy before placing your order: https://www.linsoul.com/pages/shipping
If you have any questions in the future, please feel free to contact us directly at support@linsoul.com. Once we receive your message, we will do our best to assist you.
Thank you again for your understanding and support, and we hope to provide you with a better shopping experience in the future.
As someone completely new to IEMs I wasn’t sure what to expect from the Kefine Klean, but after just a few tracks from my personal library I was genuinely impressed.
The first thing I noticed was how much detail I had been missing. Songs I’ve loved for years now feel almost new again. I can clearly hear layers of instruments, subtle background sounds, and nuances I never picked up on before. There’s a real sense of space and separation and I can almost picture where each musician is placed in the room.
I use them with a Moondrop Echo-A DAC plugged into my phone when I’m on the go, and the pairing is excellent. On PC, I either plug the Echo-A into USB or connect the Kleans directly into my micrpphone's headphone port since my speaker setup runs through an old Sony F117R amp that adds noticeable static to the headphone out. The Klean consistently delivers clean, immersive sound across all sources.
The fit is secure and comfortable, the build feels premium, and the sound quality far exceeds what I expected. I may not have other IEMs to compare them to yet, but as a first-time listener, I feel that this is how music is meant to be heard.
Highly recommended!
This IEM is so well rounded, mature sounding lows with excellent details and soundstage, a nice natural tonality with solid construction.
Dear KEFINE Customer Support,
I am contacting you regarding my KEFINE Klean IEMs, which I received as a gift.
I first started using these IEMs on 22 May 2026. After approximately three months of use, I noticed a significant difference in volume between the left and right earpieces. One earpiece is noticeably quieter than the other.
I have performed several checks to identify the cause of the problem:
I tested the IEMs on different devices.
I checked the audio balance settings.
I tested them using the same audio sources.
I checked the cable and confirmed that the problem does not come from the cable.
The volume imbalance remains on the same earpiece.
Based on these tests, I believe the issue may be related to the IEM itself rather than the cable or the connected device.
Unfortunately, I do not have the original purchase invoice because these IEMs were given to me as a gift. However, I can provide photos of the IEMs, the packaging, and any other information you may require to verify the product.
Since I have only been using the IEMs since 22 May 2026, I would like to ask whether it is possible to receive warranty or after-sales assistance without the original purchase invoice.
If possible, I would appreciate it if you could inspect the product and, if the issue is confirmed, offer a repair or replacement according to your warranty policy.
Product information:
Model: KEFINE Klean
First date of use: 22 May 2026
Purchase invoice: Not available – received as a gift
Issue: Significant volume imbalance between the left and right earpieces
Cable: Tested and confirmed not to be the cause of the problem
I am available to provide any additional information, photos, videos, or tests that may help you diagnose the issue.
Thank you for your assistance.
Best regards,
[Abderrahmane Badi]
I'm not much of an audiophile. I was just looking for a more comfy way of playing videogames which these achieve. Sound is great (to the non-audiophile ear I guess), built quality is very good and they fit well.
Comfortable, stylish, and featuring a natural sound signature. The incredibly affordable price is just a bonus.
Nice and easy fit even for smaller ears
Great in ears
Kefine Klean
It is and does exactly what it offers. The design is pretty and it fits perfectly with my ears. Sound is way too flat for my taste, but it is exactly the point of this product and what it promises.
Good as a first IEM, really easy to use very nice and unoffensive tuning, i dont like the cable because it is memory prone. The case is shitty bet thats good because that means more money is in the iem itsself
pretty nice sound good, cord a little short but good for price
Fit well, good construction, but terrible sound quality
Great IEM
Really clean and amazing sound quality for the price
The product isn‘t bad, but the usb-c cable dac has some comparability problems with apple devices (it‘s quite loud and the volume is hardly adjustable because of it)
(Setting everything to minimum makes it accaptable though)
there are two main issues, 1st: the factory eartips are not so comfortable 2nd the tuning papers in the switchable nozzles will get wet so easily after a couple of longer sessions and it will make the iems quieter not even talking about the sound quality. the first couple of sessions were really good but i feel like it should have a bit more durability
Hi there，
We’re sorry to hear that the factory eartips are not so comfortable. We suggest you try other ear tips of different materials and sizes to find the most comfortable fit for you.
Regarding the sound quality issue, we recommend storing the earphones in a dry environment, which may help improve the situation. Could you let us know if the low volume issue still persists?
We have already sent you an email to follow up further. Once we have more details, we will provide additional assistance.
We apologize for any inconvenience caused.
Audio limpio, nítido, buena separación, perfectos para gaming.
GREAT
Got em on sale for 35 bucks, best buy of my life. Changed my perspective on the role of good sound quality in life.
Sound quality is very good but durability is quite bad , the mesh inside the earphones easily accumulates moisture leading to them sounding worse, or one side being louder than the other, overall if I had a choice I wouldn't buy these IEMs again especially since they don't offer a replacement mesh as far as I've seen
Hi there,
We understand you have met problems with you. We are sorry for the inconvenience caused.
The nozzle of the product is detachable. Please remove the nozzle and check if the audio returns to normal. If it does, the specific filter is likely clogged with debris. Please carefully use a small needle to remove the filter and clean it thoroughly to see if the issue can be resolved.
We have already sent you a follow-up email to continue assisting you. Please rest assured that we will do our best to help resolve all the issues you have encountered.
We sincerely apologize for the inconvenience caused and thank you very much for your time and understanding.
Good gift
Kefine Klean
Incredible sound quality and build quality
Good
Your order
Which countries do you ship to?
We are generally able to ship to most countries via Express Shipping, and many countries via Standard Shipping. You may clarify this with our team to check whether Standard Shipping is available to your country.
We cannot ship to addresses that are "PO boxes or APO/FPO".
*Note: Generally, we can only do Selected Shipping to India and Russia. We can only do Express Shipping to Africa, Argentina, Hawaii, Kuwait, Mauritius, Montenegro and Sri Lanka, to name a few.
This may be subjected to changes due to unpredictable issues such as Covid, war, and etc.
How much does shipping cost?
We have two shipping methods - Standard Shipping and Express Shipping.
Standard Shipping is free for most countries, while Express Shipping is 15-35USD depending on your country. If your order is over 270USD, Express Shipping is free*.
*This applies for most countries. However, large items such as headphones and desktop DAC/AMPs (e.g. HarmonicDyne G200, MUSICIAN MDP-2, and etc.) are excluded.
Shipping fees exclude import taxes or processing fees that may be applicable for your country. Linsoul is not responsible for such fees. Should you refuse to pay the tax/customs fees, shipping fees will still be deducted from the amount paid for thetwo-way freightcharges. The cost of the freight charges may be more than the amount reflected on your order due to tax and other miscellaneous fees.
Some parcels claimed to be “returned to the seller” may be destroyed by the post office or customs officers when buyers refuse to accept their parcels or fail to pay for their taxes.No refundwill be processed for such cases.Standard Shipping via YunExpress is a tax-inclusive option for some countries. However, Linsoul will not be responsible for additional administrative or handling fees charged by your local courier company or customs. Please kindly check this with your local customs.For certain remote areas, there may be additional charges via Express Shipping. We will contact you if there is a need to make additional payments. Please contact us before placing an order, should you have any queries regarding shipping.
How long does it take to receive the order after it is placed?
For in-stock products, your order will be shipped within 3 working days. You may check with our staff regarding the in-stock status of any products.
Customized items will take a longer time. Please contact our staff for more information.
On normal non-sale days, once your parcel has been shipped out:
- For Standard Shipping, it takes about 2-4 weeks for items to be delivered after shipping out. For some countries, it might take up to 2-3 months, depending on your country, its customs and other factors.* The duration for transit is something beyond our control. Linsoul will not be making refunds for such cases. Please consider an upgrade to Express Shipping or keep the waiting time in mind.
- For Express Shipping, it takes about 3-7 days for items to be delivered after shipping out.
*Note: Timings might be affected due to festive seasons or other unforeseen circumstances
What happens if the parcel has been shipped but not delivered?
First, kindly contact your local courier using the local tracking number.
If your parcel were to be in transit for at least 3 months, it may have been lost in transit.
For orders below $50USD, you may either opt for a one-time reshipment of parcel OR a full refund of the amount paid in cash via PayPal/Credit/Debit card.
For orders above $50USD, we will only process a 50% refund of your order paid in cash via PayPal/Credit/Debit card. Should there be any concern about Standard Shipping, you are encouraged to opt for DHL Express Shipping instead.
Customers are to bear the consequences and fees incurred, if the parcel was undelivered due to any of the following situation:
- Wrong address or phone number provided by recipient
- Recipient was uncontactable when courier company contacted
- Refusal to sign for the package by recipient
- Lost or damaged parcel because recipient opted for “no-signature delivery”
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- Refusal to provide supporting documents for custom clearance by recipient
Who will pay for the import tax/custom fees
Customers have to bear any form of custom/import/processing fees that are applicable for your parcel.
Should you be unwilling to pay for the fees and reject the delivery of the parcel, you will still have to pay for the shipping cost. Linsoul will only refund the amount of your order after deducting the two-way shipping fees incurred.
What shipping companies do you use?
We collaborate with these courier companies:
- Standard Shipping: 4PX, UBI, NinjaVan, and Yun Express
- Express Shipping: DHL Express, FedEx and SF Express
How do I get help for my order?
Cancellation or/and modification of orders can only be done manually via our staff, provided that our Warehouse Team has not processed your order.
As our Support Team might not be available during non-working days and weekends, please place your order wisely.
Should you really need to cancel or/and modify your order after purchase, please contact us via our support email (Support@Linsoul.com) or website chat. We will help you with the changes if that could be done.
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For faulty/missing items, please send an email to support@Linsoul.com for after-sale services. The following details are required.
- Send an email to support@Linsoul.com with an appropriate Subject Title
- Provide your order number and state the issue clearly
- Attach photos and videos to show that your product is faulty/missing. Shipping details on the parcel packaging have to be clearly visible.
If the photos/videos provided are insufficient to prove the stated issue, we will enquire more. Once the issue has been confirmed, we will arrange for a replacement, partial refund or a full refund (where applicable). For incorrect products, Linsoul reserves all rights in deciding whether you need to return the incorrect item or not. Please kindly contact us via email first. Our team aims to review your email within 3 working days.
For other queries, the fastest way to contact us is via our website or Discord
Linsoul Audio will not be responsible for parcels that have been damaged during the transit process.
Do I get tracking details for my order?
After placing an order, you will receive the order confirmation email. After your order has been shipped out, you will also receive a tracking email. You can track your order via the tracking number online. Should you not have received the emails or face any difficulties tracking your order, please kindly contact us for support.
For more than 1 orders placed under the same account and shipping address, Linsoul will automatically combine the orders and ship them out via one tracking number. Should you have special requests to have the orders shipped separately, please kindly contact us via Discord or our website's chat. We will do our best to help.
How do I cancel my order?
Cancellation or/and modification of orders can only be done manually via our staff, provided that our Warehouse Team has not processed your order. Orders that have been shipped cannot be cancelled and modified.
As our Support Team may not be available during non-working days and weekends, please place your order wisely as support cannot be guaranteed for such requests.
Should you really need to cancel or/and modify your order after purchase, please contact us via our support email (support@Linsoul.com) or website chat. We will help you with the changes if that could be done.
Can I return an opened item?
Request a return within 30 days of delivery while the product is factory-sealed. Contact support for instructions before returning anything.
Where should I send the product for the return process?
To initiate the return shipment, kindly send an email to support@Linsoul.com within 30 days upon receiving the sealed product(s). The RMA form and details will be provided to you via email.
When must the product be returned after receiving the RMA form and details?
After receiving the return instructions from us via email, kindly arrange the return shipment of the parcel within 5 working days, and update us with the tracking link via email again. Failure to do so will result in a cancellation of the return process.
When will I receive my refund after returning the product?
In most cases, after receiving and inspecting the returned product, your refund will be processed within 5 business days. Refunds may incur a currency exchange loss or transaction fee, depending on your source of payment (e.g. Bank or PayPal). Linsoul will not be responsible for such fees.
What warranty applies?
Most products come with a 1-year warranty; cables and accessories have shorter or separate terms.
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