- Driver Type: 10mm dynamic with DLC diaphragm with N52 neodymium magnet.
- Frequency Response: 20Hz-20kHz.
- Sensitivity: 107dB ± 3dB.
- Impedance: 32Ω ± 15%
- Jack connector: SE 3.5mm.
- Connection Type: 2Pin, 0.78mm.
- Cable length: 1.2m ±0.2m.
- Weight: 10g on each side.
What comes in its package?: The IEMs themselves, the manual and warranty card, a quality card, a nice, well-built and very versatile case with the KEFINE logo; inside the case there’s its gorgeous cable, a perfect match for the IEMs ( I don’t feel the need to replace it) which is a 0.78 mm 2 pin, two cores twisted, silver plated free-oxygen copper cable with a 3.5 mm single ended plug, a set of balanced bore eartips (SML sizes) and the other set of nozzles (black, the silver are the ones installed).
cable looks very nice and well-built, and it matches perfectly with the shells. The shells are made of metal, well-constructed, with a beautiful faceplate in which you can see the KEFINE Klean logo in white, the housing doesn't seem prompt to scratches or so, for $49 you are expecting a quality product to last. It is comfortable to wear for long periods of time, with a nozzle who fits so well in my ears (> 6 mm diameter) but I advise seeing if is a nice fit for you because it goes in the medium to large size in comparison to other sets.
the KEFINE Klean sounds:
The Klean with its 10 mm DLC dynamic driver offers a very Klean (pun intended) and natural sound with a nice subbass boost and midbass presence with a nice extension into the lower and high frequencies, and a technical capacity who excels sets in the same segment of price and punches above its weight, offering a neutral (natural), full of macro and microdetails all-rounder who offers a very immersive, musical and fun presentation of sound, in the soundstage department it is impressive, the resolution and imaging are very remarkable, and you can distinguish all the instruments and other tracks in the music, this is no-brainer option for its price IMHO. For this review, I only used the installed nozzles (Silver).
The KEFINE Klean offers a satisfying bass shelf, with a more than decent quality and quantity of subbass thump and midbass bump, clean, fast, resolving, well extended into the lower frequencies, so bassheads can be satisfied in this aspect, it bleeds slightly into the lower mids without mudding male vocals, it sounds very natural and adds a nice flavor to the overall sound delivery. In songs like “Alone” by The Cure you can feel the weight of the bass guitar and drum kicks in a delightful and engaging presentation, in “Long Live” by Atreyu, the Klean shows how its bass delivery puts you in a state of unconscious headbanging (?).
MIDS: As I mentioned before, the midbass bleeds slightly into the lower mids but male vocals and bass kick are not muddy, neither veiled, with a tiny dip until its forwarded and enters the pinna gain with a smooth but not sibilant approach of cleanliness and enough presence and resolution, with a 5 Khz peak to add to the feel of those plates and cymbals, female vocals are forwarded as well, neither sibilant nor fatiguing, a nice 6 kilohertz dip to crank the volume up if you feel the crave for (in my case I’m finding doing this a lot). In songs like “Knife in the Safe Room” by Darkest Hour you can see how the plates and cymbals are presented with an impressive quality and not much sibilance, the vocals of Joss Stone in “You Had Me” in her album Mind Body & Soul puts me to dance with the music, sounds so cool!
TREBLE: This portion of the frequencies comes with a very good extension without so much sibilance, very clean, crisp and sharp without too much harshness, handling the sibilance so well, I’m finding myself listening to music at mid to high volumes and having to lower that volume knob to take care of my hearing, so it’s not fatiguing in long sessions at least for me (And I have a mild treble tolerance). Songs like “The Ninja” by Jason Becker and Marty Friedman’s Cacophony is shown all the drums and guitars details and colorations in the production of the album, in “The Metulsky curse” by Long Distance Calling you can just put the Klean in your ears, close your eyes and enjoy the ride for the duration of the song.
TECHNICALITIES: The upper treble extends so nice, presenting an airy and spacy sound, the soundstage is very wide, and it gives you a plentiful sensation of space and depth. In songs like “One (Live)” by Metallica in their album S&M from 1999 you can feel inside the scenario in which they recorded the music, with all the San Francisco Symphonic Orchestra playing with the band. The Klean has a very resolving presentation of sound with a separation of sound more than average for its price, with busy and complicated tracks like “Hessian Peel” by Opeth you can be sure to hear all its pieces and instruments in the soft and heavy parts of the song without missing anything from the start to the end of the track.
Closing thoughts and conclusions:
The KEFINE Klean stands out as an impressive offering and one of the best options to buy in the 50 USD or less segment, its immersive naturalness and bass and treble extension put it as an overall excellent all-rounder with a technical, engaging and musical character, making it ideal for mature and newbie audiophiles and other listeners who want a very high-quality audio experience at an affordable cost. Is one of the best all-rounders for its price and in various cases a set who presents a better choice in a very competitive market than more expensive sets.
The KEFINE Klean with its 107dB ± 3dB sensitivity is very easy to drive, even with a phone, but as a dynamic driver IEM it is benefited of source interchanging, with a neutral and uncolored source like the ESS Sabre chips it is presented as more technical than warm, but with a warm source it doesn’t lack technicalities (sources with CX31993 chips for example), and scales very well with more power. The included eartips are more than fine to use it out of the box, but if you want to change them, my advises goes to offers in the market as the Penon Liqueur Orange, Tangzu Tang Sancai Balanced and TRN T eartips.
Can I recommend it? Of course, YES! The KEFINE Klean is one of the best options for its price segment and offers a sound you find in more expensive sets, with the KEFINE seal of quality, it is in my collection, and I’m not giving it away soon.
Again, thanks to KEFINE for giving me this IEM to testing it, enjoying it and giving me the arguments I needed to recommend it as a product who excels its hype and deserves more praise . Thank you, the reader, for visiting my review, and happy listening!
