KEFINE Quatio 2DD +2BA Hybrid Drivers IEMs
SKU: 67044978237

KEFINE Quatio 2DD +2BA Hybrid Drivers IEMs

Sale price$116.99 Regular price$129.99
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Description

KEFINE Quatio 2DD +2BA Hybrid Drivers IEMs*The curve is measured by a third party and is for reference only. Features: >Kefines First Take on Hybrid IEMs. >2DD+2BA Hybrid IEMs. >Warm, Lush, Musical Sound response. >Physical+Electronic Dual Way Frequency Crossover. >Adjustable Tuning With Replaceable Nozzles. >Three Sets of Nozzles Included in the Package. >CNC Machined Aluminium Alloy Ear Cavities. >High Purity Silver Plated Copper Cable. >Modular Plug System(3. 5mm+4. 4mm). >Comes with a

*The curve is measured by a third party and is for reference only.

Features:-

>Kefine’s First Take on Hybrid IEMs.

>2DD+2BA Hybrid IEMs.

>Warm, Lush, Musical Sound response.

>Physical+Electronic Dual-Way Frequency Crossover.

>Adjustable Tuning With Replaceable Nozzles.

>Three Sets of Nozzles Included in the Package.

>CNC-Machined Aluminium Alloy Ear Cavities.

>High-Purity Silver-Plated Copper Cable.

>Modular Plug System(3.5mm+4.4mm).

>Comes with a Variety of Ear tips.

Technical Information:-

>Impedance: 32Ω.

>Sensitivity: 107dB±3dB.

>Frequency Response Range: 20Hz~20kHz.

>Connector Type: 0.78mm 2-Pin Connectors.

Kefine welcomes its first hybrid IEM for the audiophiles, introducing the Kefine Quatio. It’s a quad-driver hybrid set of in-ear monitors that houses a dual dynamic driver setup combined with a dual balanced armature driver setup to deliver a warm, lush, musical sound response. Kefine has equipped the pair with a three-way frequency crossover featuring physical and electronic crossover designs. It comes with three sets of replaceable nozzles, each having a unique sound profile. The pair features high-quality CNC-machined aluminium alloy ear cavities. Kefine bundles the Quatio with a variety of ear tips and a premium stock cable. The cable is a high-purity silver-plated copper cable with modular termination plugs featuring 3.5mm and 4.4mm plugs in the package. Enter into a new level of sonic excellence with Kefine’s latest creation!!

Quad-Driver Hybrid Architecture:-

Kefine Quatio is Kefine’s first foray into the world of Hybrid Driver IEMs. So far, Kefine has developed many successful single-driver IEMs like the Kefine Klean, Kefine Klanar, Kefine Delci, etc. The Quatio is a quad-driver hybrid IEM featuring a 2DD+2BA driver setup. The pair houses a 10mm and an 8mm dynamic driver unit, which are combined with a dual balanced armature driver setup to produce a true high-fidelity sonic experience for the users.

Precisely Designed Three-Way Hybrid Crossover:-

Kefine Quatio features a three-way crossover design. It’s a hybrid crossover design which comprises both physical acoustic tubes and an electronic crossover board. There are three acoustic channels, each goes directly from a 10mm, 8mm and dual BA setup to the ear nozzle. The 10mm DLC diaphragm DD unit produces a high-resolution response across the frequency band. The 8mm dynamic driver adopts a PU+LCP diaphragm, which has been placed to enhance the bass response. The dual BA setup is assigned with task to deliver an enhanced high-frequency band above the 5 kHz frequency range. Together, these four drivers, combined with the accurate crossover design, ensure top-quality sound presentation.

Three Tuning Profiles With Replaceable Nozzles:-

Kefine Quatio is a highly versatile pair of IEMs; the pair features three tuning options easily switchable using the interchangeable nozzle design. The pair comes with three sets of nozzles: Gold Nozzle for a transparent, neutral, more accurate sound, Silver Nozzle for a balanced sound profile, and Black Nozzle for a warm and smooth sound response.

Exclusive Craftsmanship, Proper Comfort:-

Kefine is known for treating its IEMs with superb build quality. The pair features exclusive CNC-machined aluminium alloy ear cavities. The processing time for each pair of housing is more than 30 minutes, and the dimension tolerance is within 0.01mm. Each pair has a well-textured finish as they are finished using advanced polishing and anodising processes. The thickness of Quatio’s metallic housing is just 0.06mm, which minimises the size of the shell and ensures a comfortable fit for most users out there.

High-Quality Stock Cable With Modular Termination Plug Design:-

Kefine Quatio comes with a high-purity silver-plated oxygen-free copper cable. It is a 4-strand cable with a braided structure. Each strand contains 98 wires, totaling to 392 wire cores in total. It ensures lossless sound signal transmission. This cable has swappable termination plug system with 3.5mm and 4.4mm plugs included in the package.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67044978237

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ChaCha
Boise, US
★★★★★ 5
Reliable, Comfortable Dumbbells I Actually Use Every Day
Style: 12 Pound, Pair, Style: 12 Pound, Pair
I’ve been using the Amazon Basics Neoprene Dumbbell Hand Weights daily, and they’ve honestly been perfect for my routine. Whether I’m doing a quick morning workout or adding resistance to a longer session, these have held up really well. The neoprene coating makes a big difference—it provides a comfortable, non-slip grip, even during longer workouts or when my hands get a little sweaty. They’re also easy to clean and don’t have that strong rubber smell some weights can have. I really appreciate the hex shape too. They stay put when I set them down (no rolling across the floor), which makes switching between exercises quick and frustration-free. The weight feels evenly distributed and well-balanced, so movements feel controlled and smooth. Overall, these are simple, no-frills dumbbells that just work. If you’re looking for reliable hand weights for everyday use—whether you’re a beginner or just need something dependable for home workouts—these are a great choice.
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Reviewed in the United States on April 14, 2026
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Verified Purchase
Rayven Z
Draper, US
★★★★★ 5
Great quality and perfect for home workouts!
Style: Rack with 3 Pairs (3, 5, and 8 Pound)
I’m really happy with this dumbbell set. The weights are clearly labeled (3 lb, 5 lb, and 8 lb), which makes it super convenient to switch between exercises. The neoprene coating feels comfortable in hand and provides a good grip, even during longer workouts. The storage stand is a big plus—it keeps everything organized and saves space, which is perfect for a small home gym. The colors are also nice and make it easy to quickly grab the weight you need. Overall, this is a great set for beginners or anyone looking to add light strength training to their routine. Highly recommend!
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Reviewed in the United States on April 13, 2026
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Verified Purchase
DCat
Birmingham, US
★★★★★ 5
I’m A PT AND USING THEM IN MY CLINIC. PLS READ HONEST AND THOROUGH REVIEW.
Style: 15 Pound, Pair
I have been a PHYSICAL THERAPIST FOR 30 YEARS and I BOUGHT THESE FOR MY CLINIC. THESE WEIGHTS ARE COVERED IN A GRIPPING MATERIAL, NEOPRENE, MAKING IT COMFORTABLE and EASIER TO USE, ALLOWS YOU TO NOT LOSE YOUR GRIP, and IT IMPROVES THE SAFETY OF THE USER. I WILL BE BUYING THE 12&20 lb sets! THE VALUE FOR YOUR MONEY IS WONDERFUL!! AMAZON BASICS REALLY CAME THROUGH. It DID NOT INCLUDE AN INSTRUCTION GUIDE TO USE WEIGHTS SAFELY AND EFFECTIVELY. STELLAR FORM IS ALWAYS ESSENTIAL. MY WEIGHTS WENT UP TO 10 POUNDS, SO I DEFINITELY NEEDED ADDITIONAL WEIGHTS for those who can SAFELY TRANSITION . I MAINLY WORK AS A MANUAL THERAPIST …USING ONLY MY HANDS, AND MY BRAIN. TO DIAGNOSE AND TREAT ACCORDINGLY. (**ANYONE WHO HAS BEEN TO PT KNOWS THIS KIND OF ONE ON ONE TREATMENT IS UNHEARD OF**) I IMPLEMENTED MYOFASCIAL RELEASE, TRIGGER POINT THERAPY, DEEP TISSUE MASSAGE, AND APPROPRIATE STRETCHING AND EXERCISE . ONCE PATIENTS WERE ABLE, I INITIATED THERAPEUTIC EXERCISE. I WAS GETTING SO MANY REFERRALS THAT I MOVED FROM MY SMALL SPACE AND GOT A LARGER SPACE THAT LOOKS LIKE A TYPICAL PT CLINIC. I STILL EMPLOY ONE ON ONE TREATMENT, NO JUGGLING SEVERAL PATIENTS IN AN HOUR. I HAVE HIRED HELP TO ASSIST PATIENTS WITH EXERCISE AND STRETCHING. I PURCHASED TWO ADDITIONAL SETS ITHE SET IT I DID TO FIRST CHECK THEM OUT. I ADORE THESE AND HAVE SINCE ORDERED OTHER SETS. I LOVE TO WORKOUT AND I NEEDED TO USE THESE WEIGHTS MYSELF!! THERE ARE ALSO PATIENTS OF MINE WHO WILL PROGRESS TO THESE AS WELL. I AM SUPER IMPRESSED WITH THESE WEIGHTS AND CANNOT WAIT TO RECEIVE MY TWO OTHER SETS!! YOU WILL NOT BE DISAPPOINTED. EVEN IF YOU SWEAT, YOU ARE STILL ABLE TO HOLD ONTO THESE WEIGHTS COMFORTABLY AND SAFELY. SAFETY IS KEY, ALWAYS. I WAS EXTREMELY DELIGHTED THAT THEY ARE SOLD AS A SET BECAUSE MANY ARE SOLD SEPARATELY. THEY FIT PROPERLY ON A UNIVERSAL WEIGHT STAND, SO THEY ARE VERY EASY TO STORE. I CANT WAIT TO GET MY OTHER SETS! IT IS REALLY SAFE AND COMFORTABLE TO USE THESE WEIGHTS. THEY DID NOT GIVE OFF AN ODD ODOR, which is A HUGE PLUS because SOME OTHER BRANDS SMELL HEAVILY OF PLASTIC OR A CHEMICAL TYPE ODOR. THERE WAS NO ODOR AT ALL. THIS IS A HUGE PLUS. I AM COMFORTABLE SAYING THAT THESE WEIGHTS WILL LAST A LONG TIME BECAUSE OF HOW WELL THEY ARE MADE. YOU CANNOT BEAT THE PRICE EITHER!! THESE ARE ABSOLUTELY APPROPRIATE FOR PROFESSIONAL USE, AND, THEY ARE MEANT FOR PERSONAL USE AS WELL. SOMETIMES YOU JUST CANNOT GET TO THE GYM SO THIS IS WHERE THEY ARE KEY. HAND WEIGHTS HAVE THE ABILITY TO EXERCISE EACH MUSCLE OF THE TORSO AND ARMS. THERE ARE SOME EXCELLENT WEIGHT CHARTS OUT THERE TO SHOW YOU HOW TO DO THAT. IF YOU ARE GOING TO PHYSICAL THERAPY, THEN YOUR THERAPIST CAN INSTRUCT YOU AND KEEP YOU IN GOOD FORM. YOU COULD POSSIBLY HURT YOURSELF IF YOU WORKOUT INCORRECTLY. AS FAR AS THE LOWER EXTREMITIES, YOU CAN DO GROSS MOTOR EXERCISES BY HOLDING THESE WEIGHTS TO GET YOUR LEG MUSCLES BY DOING SQUATS, WALKING LUNGES, TOE RAISES, AND MORE. I DONT BELIEVE THAT MANY PEOPLE REALIZE JUST HOW MUCH YOU CAN DO FULL BODY EXERCISES WITH JUST TWO HAND WEIGHTS. IN CONCLUSION , THESE ARE EXCELLENT WEIGHTS THAT I WOULD RECOMMEND TO MY PATIENTS OR FRIENDS. THIS IS A HIGH QUALITY PRODUCT THAT WONT BREAK YOUR PIGGY BANK. I HIGHLY RECOMMEND VERY HIGHLY!. BUY WITHOUT RESERVATION!! A+++
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Reviewed in the United States on March 23, 2025
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Verified Purchase
Aimee C.
Natrona Heights, US
★★★★★ 4
Perfect size and weight with compact size
Style: Rack with 3 Pairs (3, 5, and 8 Pound)
I purchased the Amazon Basics Neoprene Dumbbell Hand Weights specifically for Pilates, and they’ve been a great addition to my routine. The size and weight are perfect for controlled movements, helping with muscle toning without feeling too bulky or awkward. The neoprene coating gives them a comfortable, non-slip grip, which is especially important during longer sessions or when your hands get a little sweaty. They feel secure and easy to hold through a full workout. I also like the shape—they don’t roll around on the floor, which makes transitions between exercises smoother and less frustrating. They’re compact enough to store easily but still feel durable and well-made. Overall, these are a simple, affordable, and effective option for Pilates or light strength training. I’d definitely recommend them for anyone looking to add a little resistance to their workouts without overcomplicating things.
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Reviewed in the United States on April 20, 2026
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Verified Purchase
J. saroukhan
Draper, US
★★★★★ 5
Well made , gym quality
Style: 10 Pound, Pair
Color is nice and bright . The weights grips are good they do not slip . Prices reflect quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026

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