• Jan 28, 2026
  • 0 comments

Kefine Klean: The IEM to Start Audiophile Journey

Reviewed by thought of Coffee

 

Pros
-Very mature sound
- Robust build
- Comfy fit
- Deep bass
- natural vocals
- Detailed but quite smooth treble
- Good amount of separation and stage
- Two types of preference for nozzle
Cons
- Stock cable is good but comes in single ended
- For better sounding needs copper cable
- After market eartips must needed
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Disclaimer:

 

Thanks Kefine for sending Klean as a review unit. They didn't provide me anything to influence this product. I will be unbiased and share my thought about Kefine Klean

I would like to mention one more thing:This review is based on my personal music preference and sources cause music preference varies person to person and sources

If you want to buy one of this visit
https://keephifi.com/products/kefine-klean-10mm-dlc-diaphragm-dd-in-ear-earphones-two-interchangeable-nozzles-two-different-sound?_pos=1&_psq=kef&_ss=e&_v=1.0

or you are from Bangladesh
https://geekmartbd.com/

Specifications:

 

MODEL: KEFINE KLEAN
IMPEDANCE: 32Ω
SENSITIVITY: 107dB
FREQUENCY RESPONSE: 20Hz - 20kHz
CABLE LENGTH: 1.2m
PIN TYPE: 0.78mm 2-PIN CONNECTOR
PLUG TYPE: 3.5mm
DRIVER UNIT(S): 1 DYNAMIC DRIVER
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Unboxing Expirence:

 

The unboxing expirence of klean is very simple . In the box you will have the iems, a 3.5 mm cable, a hard carrying pouch, two types of tuning preference nozzle and some eartips.

Introduction:

 

Ok.. I thing I'm quite late for review of klean but at a time klean doesn't or may not disappear upcoming time . Cz the sound, value it offers is quite hard to beat . Klean is the first product for me from Kefine their other product like delci , klanner wasn't type of mine preference. But klean was a totally different experience for me which I'm gonna share later in my review


Pairing:

 

Usually I don't test any IEM in just stock form I always do swaping cable, tips rolling , matching source to get the best outcome. When I was testing Klean my favorite pairing was cable : Dunu lyra mini
Tips : Dunu Candy
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Cable:

Stock
Dunu lyra mini

Eartips:

Dunu Candy
Divenus Velvet

Sources:

Dongle:
Ibasso Dc04 Pro
Ibasso Dc Elite
Cayin RU7
Ddhifi tc44Pro E2
DAP:
Cayin N3 Ultra
Ibasso DX180
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Build and Design:


These Kefine Klean IEMs are made of solid metal alloy construction, making them both durable and good looking. Further, the design is pretty minimalist but manages to look elegant with well-crafted faceplates and compact form factor. The interchangeable nozzles definitely add a layer of customization for user preference. The cable is sturdy and tangle resistant and has minimal microphonics, further contributing to the user experience.

Fit and Comfort:

 

Despite their metal build, the Klean IEMs are designed for comfort. The ergonomic shape ensures a secure fit, accommodating various ear sizes without causing discomfort during extended listening sessions. The weight is balanced, and the angular design aids in achieving a good seal, which is crucial for optimal sound quality and noise isolation. Users have reported that the Klean provides better isolation and comfort compared to some competitors, making them suitable for prolonged use.
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Tuning nozzle:

 

Kefine Klean offers two nozzles in the box one is Silver and another one is Black. Difference between them maybe not huge but they are quite noticeable .

Black Nozzle: 

The Klean, once fitted with a black nozzle, will sound brighter with emphasis on treble, making the sound more detailed and crisp. Furthermore, this also has been stated by some people to introduce a slight sibilance to the sound, in which the hisses at high frequency are stressed.

Silver nozzle: 

Warmer and more even in sound profile, this presents the audiophile's dream of richness and coherence. It focuses on milky rhythm presentation with pleasant note weight, thus cleaning up for the heavier low-end frequency presentation; it is more adept at those who will look for a more laid-back presentation with the music being upbeat.

Note: this review is based on Silver nozzle

Sound Quality 

Sub-bass :

 

The Klean has a satisfying sub-bass presentation, digging deep to give that palpable rumble which complements genres such as electronic and hip-hop well. The low-end is all about the sub-bass; it's a hard-lined attack with a fast thud approach that makes the bass engaging at this price point. It isn't the most dominant, but it provides a solid foundation in the overall sound without overwhelming other frequencies. This balance ensures that tracks with pronounced low-end elements are rendered with both power and clarity, offering listeners an immersive experience.

Mid-bass:

 

On the mid-bass, Klean keeps up a strong, controlled presence.Bass guitars and kick drums come through authoritative to provide a full-bodied, thick sound that remains tight and refined. The mid-bass is less elevated than the sub-bass but is still pretty impactful to make sure the bass doesn't sound too forward or overpowering in the mix. That way, the bass response will be fun and engaging without sacrificing clarity or detail in the midrange.

 

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Male Vocals: 

 

Male vocals on the Klean sound clear and warm. The very slightly warm nature of the mids makes the male voices natural and intimate yet never honky or shouty. The balance here is nothing short of amazing, since it lets the vocals be on top without overwriting everything in the mix. This results in a very smooth and enjoyable listen, especially in genres with a strong focus on vocals.

Female Vocals:

 

The clean and slightly forward upper mids on the Klean help the female vocals. Tuning here is done so that the female voices come through clear and detailed yet not sharp or sibilant. Natural and lively upper frequencies create an engaging and real-life-like female vocal portrayal, full of expressiveness and emotional resonance.

 

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Instrument Separation:

 

The Klean is commendable for instrument separation, given its price. It is easy to tell which instrument is playing at any moment in a complicated track, and each element has its own space without sounding congested. This clarity ensures that intricate musical passages are rendered with precision, allowing for an immersive and detailed listening experience.

 

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Soundstage and Imaging:

 

The soundstage of the Klean is medium-sized, neither too cramped nor too wide. Imaging is quite good and allows the listener to place instruments with a good sense of their shapes and directions. This capability adds to the overall immersive quality of the listening experience, making the Klean a compelling choice for those seeking both accuracy and engagement in their audio.

Testing Tracks:

Anchor - Novo Amor
A Thousand Years - Christina Perri
Back In Black - AC-DC
Billie Jean - Michael Jackson
Bohemian Rhapsody - Queens
Careless Whisper - George Michael
Darling Pretty - Mark Knopfler
Gangster Paradise - Coolio
Get Lucky- Daft Punk
Happy Nations- Ace of Base
Imagine- Jhon Lennon
Immigrant Song- Led Zeppelin
Just The Two of Us- Grover Washington Jr.
Kiss From A Rose - Seal
Kill Jill- Big Boi
Let Her Go - Passenger
Lose Yourself to Dance- Daft Punk
Moby Dick- Led Zeppelin
Pale Blue Dot - Dream Theater
Playing God- Polyphia
Portable Door - Deep Perple
Power of Love- Laura Branigan
Pretty Little Thing- Michael Jackson
Stand By Me- Ben E. King

Finally, in this fast changing market nothing stays for long but I believe that in 2025 Klean will also compete with others . And if somebody ask me is it worth after all these month I will say yes it worths every penny for its mature sound, excellent build and fit .

That was my thoughts about Kefine Klean. Let me know your thought about this IEM Till then keep listening .

 

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