Hey guys, I wanted to share some info on the Kefine Quatio, to which I think has a lot of great properties and is really competitive at the price.
To the moderators, could we move this to the iem thread please. 
Product Specifications
Brand: KEFINE
Model: Quatio
Driver configuration: 2DD+2BA
Dynamic driver units: 2pcs
#1.10mm DLC diaphragm driver: 1pc
#2. 8mm PU+LCP diaphragm driver: 1pc
Balanced Amateur units: 2pcs
Frequency response: 20Hz-20KHz
Sensitivity:107dB+/-3dB
Impedance: 32 Ohms
Connector: 0.78mm 2-pin
Cable length: 1.2M
Modular plug system: 3.5mm single-ended & 4.4mm balanced
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Product Highlights
2DD+2BA
Each side of the IEM features a hybrid setup with 2 dynamic drivers and 2 balanced armatures, delivering a warm, full-bodied, and easy-to-listen sound.
The two dynamic drivers are built with different diaphragm sizes and materials:
- 10mm DLC diaphragm
- 8mm PU+LCP diaphragm
The 10mm DLC dynamic driver, developed specifically for KEFINE, handles the full frequency range with excellent detail and coherence. Unlike some setups where different drivers cover different frequency ranges and may result in disjointed sound, KEFINE’s DLC driver offers a smoother, more consistent performance. The 8mm PU+LCP driver enhances the low end, adding extra weight and richness.
Three Interchangeable Tuning Nozzles
Three interchangeable tuning nozzles offer different sound profiles to suit various listening preferences.
Quatio uses three types of tuning paper with different densities—the higher the density, the more the sound is dampened.
- The gold nozzle has the lowest density tuning paper, producing a brighter and more detailed sound.
- The silver nozzle has medium-density tuning paper, resulting in a balanced sound.
- The black nozzle has the highest density tuning paper, delivering a warmer and more mellow sound that’s easy to listen to for long periods.
Interchangeable 3.5mm & 4.4mm
Comes with both 3.5mm single-ended and 4.4mm balanced interchangeable plugs, allowing for easy switching and wider device compatibility.
High-Purity Silver-Plated OCC Cable
Quatio comes with a high-purity silver-plated oxygen-free copper (OCC) cable in a 4-core braided structure. Each core contains 98 individual strands to ensure high-fidelity signal transmission with minimal loss.
After testing various cable materials, KEFINE found that pure copper provides a smoother, warmer sound, while silver plating enhances treble extension. The combination strikes a pleasant balance, making the overall sound more refined and enjoyable for a wide range of listeners.
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The Story Behind “Quatio”
From its very first product, KEFINE has been steadfastly committed to exploring the world of audio. With models like Delci, Klanar, and Klean, KEFINE earned recognition through single-driver designs and carefully crafted tuning.
Many audiophiles and loyal users asked us: “Could you create a multi-driver earphone? We’re eager to hear what kind of sound you would deliver.” This expectation stayed with us from the start.
Building on our existing sound philosophy and quality standards, KEFINE decided to continue using our highly praised DLC dynamic driver while integrating balanced armature drivers to explore richer sound performance. Thus, the Quatio was born.
The name “Quatio” comes from its design: 2 dynamic drivers + 2 balanced armature drivers, four drivers in total — Quad Audios, hence Quatio.
We remain true to KEFINE’s principle of offering trustworthy sound at a reasonable price. Even with a multi-driver configuration, we strive to balance cost and quality.
The sound tuning of Quatio reflects the voices of audiophiles, with a focus on impactful bass. It delivers moderate but deep bass with strong impact, creating an immersive atmosphere. The mids are solid and detailed, with clear and natural vocals. The highs are gentle and smooth, making it comfortable for long listening sessions. It especially suits listeners who enjoy pop, electronic, hip-hop, and dance music, or those who appreciate rhythm and atmosphere in their music.
Quatio is a product born from user feedback and embodies the spirit of KEFINE. More than just a four-driver earphone, it is a shared creation between KEFINE and its users.
