KEFINE KLEAN SV REVIEW

>>I am brazilian and I speak portuguese, so forgive my english, I’ll use translation tools to help<<

INTRO:

Till $50 USD, the KEFINE KLEAN is certainly my number 1 recommendation… But now, the little brother has appeared. Is he as good, or better than his older brother? Well, let’s analyze the new version: KEFINE KLEAN SV (short for “silver”).

Price: $54.99 USD
Color: Silver
Cable: 3.5mm, or 4.4mm Bal, or USB-C (with Mic)

KEFINE LINKS:

https://amzn.to/4xyMabR (US)

https://amzn.to/44gt392 (UK)

https://amzn.to/4ef1SRX (FR)

https://s.click.aliexpress.com/e/_c3CwDxbT (PC)

https://s.click.aliexpress.com/e/_c3NaAi0Z (APP)

SPECIFICATIONS:

Single DD: 1 driver per side

(1) DD 10mm Dynamic Driver

– Frequency: 20Hz – 20kHz
– Impedance: 32Ω±15%
– Sensitivity: 107dB±3dB
– Connectors: 2pin 0.78mm (detachable)
– Cable Plug: 3.5mm (straight design)
– Cable size: 1.20m
– Cable material: Silver plated Copper
– Shell and Faceplate: Metal
– IEM weight: 9.2g (one side)(without eartips)
– Cable weight: 17.6g
– Total weight (packaging, iems, etc): 168g
– Packaging size: 12.8cm [H] x 10.8cm [W] x 3.7cm [D]

UNBOXING:

PHYSICAL ASPECTS:

Construction:

Metal shells and faceplate (material unspecified by the company).
The nozzles are removable (screw-on).
The extra nozzles serve as tuning filters.
It has two vents per side.
Good build quality, very robust.
The earphone structure is the same as the KLEAN‘s.
The only difference on both is in the removable nozzle system.
On the 1th, only the edge unscrew, on the SV the entire nozzle unscrew.

Eartips:

2 types of eartips: white and gray. Sizes S/M/L.
They are generic eartips, and there isn’t much difference between them.
It is always good when companies offer more variety.
The rubber on the tube is very thick, which causes me discomfort.
Maybe you can need third-party eartips (this is subjective).
I did the review using SpinFit CP100 eartips (Size M).

Cable:

I really like this cable.
It’s the same cable as the KLEAN.
Good usability.
Great malleability.
Very light and thin.
It doesn’t tangle.
It doesn’t develop “memory” (wavys).
It didn’t exhibit microphonics.
The chin slider doesn’t slide down.
The earhooks are great, too.
I don’t see a need to replace it (subjective).
There are 4.4mm Balanced and USB-C versions (choose when purchasing).

Fit and comfort:

Great fit and comfort. Great stability.
Comfortable IEM.
Good shape for all ear types.
Good for long hours of use.
9.2g, neither the lightest nor the heaviest.
Could be lighter, but it’s not an issue.
Medium insertion depth.
Good isolation.

Earphone kit (accessories):

KLEAN SV earphones.
3 pairs of eartips sizes S/M/L.
3 pairs of eartips sizes S/M/L.
3.5mm cable.
Carrying case.
2 pair of extra nozzles (filters).
User manual, and QC pass.

SOUND ASPECTS:

Sound:

Clean, natural, and detailed sound.
Balanced tuning. Mild V-shape.
An all-rounder, suits various musical genres.
Delivers energy and fun without going overboard. Coherent.
Slightly emphasized bass, linear mids, and slightly sparkle treble.
Great resolution and detail.
Technically very interesting (for the price point).
It remains the go-to recommendation for the sub-$50 USD range.
It is a slightly cold/brighter version of the KLEAN.
I felt there was a slight reduction in bass compared to the 1th version.
That said, I still prefer the first version (subjective).

Bass:

– Quantitative:

Moderate.
Not for bassheads.
Sub-bass and mid-bass have good presence.
Linear response, with no frequency overlap.
As I mentioned earlier, I found the KLEAN to have more bass.

– Qualitative:

The bass is clean, fast, dynamic, and has good extension.
It has good body, texture, and physicality.
Definition is very good.
Impact is also good.
It doesn’t bleed into the mids.
The bass is well-balanced.
The KLEAN‘s bass is slightly stronger and warmer.
Bass drum hits are very clean and defined.
Double bass lines track the recording with good dynamics.

Mids:

– Quantitative and qualitative:

Natural mids.
Neither recessed nor forward.
Coherent pinna gain, without being aggressive.
Great definition and detail.
Great clarity, airiness, and transparency.
To my ears, neither warm nor cold. Balanced.
I experienced no fatigue in the upper-mids.
Well-resolved, both tonally and technically.
This was the region I found most similar to the KLEAN.
Snare drums sound smooth and defined.
Wind instruments have good airiness.
Guitars feature great detail.
The pianos sound very natural.

Voices:

Great for both types of voices (low or high).
Great versatility for vocals.
I found the KLEAN setting to be better for low timbres.
I think the SV setting strikes a balance.
A good dose of warmth and texture for low voices.
Energy and good airiness for high voices.
Great for both, but not excellent for either.

Treble:

– Quantitative:

Moderate treble.
Not for trebleheads.
Well-implemented treble.
Slightly more prominent than the mids.
Slightly more emphasized than the KLEAN.
I didn’t experience any treble fatigue.
Recommended for those with sensitivity.

– Qualitative:

Versatile, defined, controlled, and fast treble with good extension.
Natural, coherent, and lively brightness.
Excellent detail and airiness. Positive point.
They aren’t shrill, sharp, or harsh.
I didn’t heard sibilance, peaks, or coloration.
The performance is very good for the price.
Guitar solos have great energy and detail.
Chimes and bells sound coherent within the presentation.
Ride cymbals have excellent resolution.

Soundstage:

Good soundstage.
It has a good sense of space, but isn’t all that “spacious.”
V-shaped tend to be more spacious (not a rule).
Good depth, height, and width.

Imaging:

Great instrumental separation. Positive point.
The stereo image is also very good.
Good detailing helps a lot with imaging.
Easy to identify the position of instruments.
It seems to be a more expensive IEM.
The fight is good with the SIVGA QUE.

Filters (removable nozzles):

I reviewed the sound using the silver nozzle.
The difference between one filter and another is tiny, sometimes non-existent.
Removable nozzles is more expensive than put good eartips in the kit.
In my view, it is far better to invest in higher-quality eartips.
Eartips have a much greater impact on the sound than removable nozzles do (IMO).

Driver flex test:

The Klean SV didn’t show driver flex characteristics.

Amplification:

Easy to push.
No powerful amplifier required.
A DAC/AMP dongle is sufficient.
I reviewed the KLEAN SV with the FiiO KA11.
KA11 by 25% (out of 100 in W10).

PROS AND CONS:

– Great cost-benefit
– Good build quality (sturdy)
– Clean, natural, and detailed sound
– Balanced tuning / all-rounder
– Great technical performance
– Great detail retrieval
– Great imaging
– Good soundstage
– Easy to drive
– Comfortable to wear
– Good for long listening sessions
– Suitable for all ear types
– Extra nozzles (replacements)
– Excellent cable
– Good case

– Identical eartips (only the color differs)
– Neither the heaviest nor the lightest
– Filters don’t make a significant difference

GRAPHS BY SUPER*REVIEWS:

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