Astell&Kern - AK UW100MKII

Hi-Res True Wireless Earbuds

Sale price₹ 4,999 Regular priceMRP: ₹ 24,999
This product is permanently discontinued by the manufacturer and continues to live on in Headphone Zone's Museum.

Unfortunately, even if we desire to, we won't be able to resurrect this product. The Museum is where we pay our respects to end-of-life, old, archived, but not forgotten products. This page was made with a lot of love and will live on for posterity. What to say, we're sentimental people. 😔

While this product is gone forever, here are others we recommend

Customers praised the "excellent sound staging" and "perfectly tuned" audio with crisp highs and detailed mids. However, many reported significant reliability issues including left earbud failures, connection problems with iOS/Android, uncomfortable fit that causes earbuds to fall out, and unresponsive touch controls. Several noted the product may be discounted due to known defects.

  • Love the sound staging. Perfectly tuned and doesn't hurt ears during long listening sessions.
  • Sound great, feeling like hearing in wired setup with separation and details in music.
  • Detail and ultimate fidelity of playback is one of the best from True Wireless earphone.
Sound (positive)Quality (positive)Bass (neutral)Controls (negative)Fit (negative)
R
Rupesh Singal (Noida)
Surly 5 star rating

This is for sure 5 star rating. The product deserves it. Love the sound staging. Perfectly tuned.

It is fantastic to hear you are enjoying the Astell&Kern AK UW100MKII, Rupesh. I can't wait for you to hear that one detail in your favourite song you never noticed before.

d
diwakar kamat (Hyderabad)
Astell&Kern AK UW100MKII – The Worst Earbuds I’ve Ever Used!!!!!!......

I have used a wide range of earbuds, from budget-friendly ₹800 Boat models to premium ₹27,000 Sony XM5s, but the Astell&Kern AK UW100MKII is by far the worst product I’ve ever put in my ears. Let me be clear: the sound quality is actually pretty good, and that’s not the issue. But what’s the point of good sound when the earbuds themselves are plagued with unbearable distortion, frequent disconnections, and a terrible multi-device connectivity experience?

The biggest frustration is that these earbuds randomly disconnect without any warning, which makes them highly unreliable. On top of that, the audio distortion is unbearable, occurring way too often and ruining any listening experience. The multi-device connectivity is another disaster—it lags, disconnects, and barely works as expected. If that wasn’t enough, the charging case is unnecessarily big and bulky, making it inconvenient to carry around.

I strongly suspect that Headphone Zone sold defective stock at a discount. I returned my first pair thinking I got a faulty unit, but even the replacement had the exact same issues. This isn’t just a bad product—it feels like a scam. Astell&Kern may boast about their 32-bit built-in DAC and premium sound technology, but what’s the use when the earbuds fail to function properly?

Honestly, if you’re considering buying these, please don’t waste your money. Even Oppo makes far superior earbuds, and I’d rather use an ₹800 Boat pair than deal with this overpriced disaster. At this point, I’m so frustrated that I’d rather smash them into pieces than go through the hassle of returning them again.

⭐ Rating: 1/5 – Only because the sound is decent, but everything else is a nightmare. Stay away from the AK UW100MKII!

Hi Diwakar,

It breaks our heart to hear that you perceive us so negatively.

We'd like to clarify that we would never stock substandard products or products that have multiple issue on our website as our customer's trust is of utmost importance to us.

As we procure our inventory directly from the brand, it is not possible for us to determine the condition of any sealed unit before unboxing the same at our end and we wouldn't intentionally ship out a defective product.

Having said that, we see our team reached out to you over email regarding your return's case 4 days ago. As we didn't hear back from you post that, we weren't able to take your case ahead.

In case you need any further assistance, feel free to contact us at direct@headphonezone.in and we shall surely assist you in any way we can.

S
Shiva (New Delhi)
Great sound but sadly not for me.

The buds are amazing. I cannot describe the little things I've noticed but unfortunately the buds are too big for my ears. The gestures don't work smoothly (low sensitivity; I've to really press them like keys to get them work). The double/triple touch don't work. Despite setting it to stop playing audio once I get it off my ear it does not. I'm disappointed i so wanted this.

Hi Shivajeet,

It's sad to hear that you're experiencing issues with the Astell&Kern - AK UW100MKII.

From the issue you've described something seems amiss and to be very sure of the issue, we'll have to check the unit at our end.

Fortunately as all products on our website are covered under a 7 Day Replacement Guarantee, we've approved your return request.

Please be rest assured, our team shall go ahead and do the needful to assist you further.

A
Anil K (Anantapur)
Astell&kern uw100mkii

Build quality of these case and ear buds very sturdy.The sound quality is like90s 2000s tape cassette DAC.or And it can be said that the CD player.Sound stage is very impressive 👌

Thanks for your review!

V
Vignesh Thirunavukarasu (Chennai)

Looking for a good tws with proper audio features..never thought would found one with Dac.. highly impressed..thanks to headphone zone.. because of them only i found this one and with a crazy deal.. thanks team..
P.s. the tws will be coming with zero battery..need to charge initially..

Hi there! We're so glad to hear that you're impressed with the Astell&Kern AK UW100MKII

M
Maheshwar (Visakhapatnam)
Purchased just for Knowless BA & Inbuilt DAC

Initially some hours of burn is needed atleast to get a slight change in performance. Changed buds for bass. It takes time to sounds better. But don't expect BASS, this is a single BA driver TWS. Except bass, it sounds good and sound stage also! My curiosity is to experience knowless BA sound. Thanks for HPZ, expecting some more upgraded TWS from A&k.

Thanks for sharing your thoughts!

H
Himanshu Sheth (Mumbai)
Flat sound signature. Equaliser friendly

With most reviewers mentioning that the earpieces fall out of the ear, and the in-ear detection is unreliable coupled with a reviewer on Headphone Zone mentioning that open box items are not as good as brand new, set off doubts in my mind about my purchase.

The packaging itself contained all the original box packing, all eartips, literature etc except for the sealing tape. Whew.

My ear is medium sized and usually the eartips that come fitted as standard work superbly.

With the UW100, they just fell out. Fitted a size larger with the same result. My heart began to sink. Fitted the largest eartips, they just about held in place.

The in-ear detection began to act funny like the other reviewers have mentioned.

The in-ear sensor is on the inside surface next to the LED. If that comes within 2mm of any surface it detects the "ear" perfectly. If we position the earbuds slightly rotated, no part of the ear activates the sensor. But align the earbuds with the primary mic facing forward, and the "A" logo vertical everything starts working as it should.

Don't need to switch off "In-Ear detection"

I come from a DT770 Pro and AKG361BT in conjunction with iBassoDC05 and Jabra Elite 65t (mediocre) Audio Tecnica ATH SQ1TW TWS as reference.

The details on the UW100MKII is on the lines to that you hear on the DT770 and the AKG361.

The soundstage is wide and instrument separation is superb.

On "Another Day in Paradise", the low frequency tones before the drums kick can be distinctly identified as two different sources.

On Santana's "Bella" many peripheral percussion instruments can be heard discreetly and enjoyed.

On Bass Heavy tracks like "Money For Nothing", each individual snare drum strike is heard separately instead of as one continuous cacophony.

George Michael's voice on Careless Whispers doesn't sound sibilant like on other headphones

The saxophone on Candy Dulfer's "Lily Was Here" sounds sweeter than the other TWS.

The Audio Tecnica ATH SQ1TW is an enjoyable warm sound signature whereas the AK UW100MKII is a purist flat signature which can be tweaked via equaliser to give you the AT sound as well.

Hope I have cleared a few doubts in the minds of fence sitters.

All in all, a highly recommended TWS.

Thanks for the detailed review!

p
pradeep k (Chennai)
Astell&Kern - AK UW100MKII Excellent Earbuds

got this earbuds on sale... such a premium earbuds at such an amazing price. quality is A+ ...

Hello, thank you for the stellar ratings!

K
Kiran Iyer (Mumbai)
Brilliant sound reproduction

The wide sounstage, adaptive aptx, BA knowles driver and 32 bit dac. Each of the above complement each other well and give you a perfect listening experience. Be it music OR podcast. I am in complete awe of these.

If headphonezone gives me a discount i would love to add one more for my office desk

Thank you for taking the time to leave such a positive review! We're thrilled to hear that you are enjoying the wide soundstage, adaptive aptx, and other features of the AK UW100MKII. Happy listening!

A
Allan Koli (Pune)
Astell&Kern - AK UW100MKII are one of the best value earbuds

I really liked the sound quality of these earbuds. There are so good that I was continuously listening to music for almost 6 to 7 hours with these but I had to take short breaks in between each hour because as these earbuds are huge, they can get a bit painful. The other thing I'm still waiting for is the Android OS 14 update for the app of these earbuds. Fingers crossed. The touch controls have a bit of delay and are sometimes unreliable but I hope this might get fixed with some firmware updates. Apart from comfort issues and touch control problem, the sound quality is the best. People who want one of the best sound quality for less price should get these earbuds for sure. These are of a great value.

Thank you for taking the time to leave a review for the Astell&Kern - AK UW100MKII. We are thrilled to hear that you are enjoying the sound quality and that they have been keeping you entertained for hours. We appreciate your feedback and we hope you continue to enjoy the great sound quality.

R
Rajiv Mishra
Great sound at great price

At the price I got...it's just Phenomenal sound quality.
Design and comfort okay for me.
Battery life is amazing.

Hi there! Thank you so much for your amazing review of the Astell&Kern - AK UW100MKII. Have a great day!

S
Suresh TV (Kochi)
No App for Android

I got them on 1st Dec the device connected ,but I don't find any app as AK control in Google play store. How do I download the app it's very pathetic.
And about the product the build quality and sound is amazing .It's decent value for money.The musicality of this ear buds is way above the IEMs iam using.

Hi Suresh,

Thank you for taking the time to share your review about the Astell&Kern - AK UW100MKII. We appreciate your honest feedback.

Having said that, we'd like to inform you that an update for the AK Control App is coming soon! This update will ensure full compatibility with Android OS14 for your Astell&Kern AK UW100MKII.

Look out for the update in the 2nd week of December on Google Play Store.

In case you need any other assistance, please feel free to reach out to us at direct@headphonezone.in and our team shall surely assist you further in any way possible.

A
Arpan Khaiwal (Dehradun)
Loved them but was frustrated

These were my first ones and I really loved the sound , Noice Cancellation but for there bulky size they were very fragile and I had send them for repairs several times . They didn't even last half a year . I especially liked the led blinker of the case which also started malfunctioning

D
Disgruntled Bud (Bengaluru)
They don’t really want to work

Been using it on and off for a year. Mostly off. These have pairing issues and struggle to connect with iOS, even when they do, they disconnect once in a while and force you to repair. It’s a terrible fit that keeps loosening and never wants to stay in. Touch controls are not precise and unintuitive. Honestly they don’t sound great either especially on iOS which lacks aptX and the like. Cheaper buds like Oppo Enco do a better job and behave better.

At every level, these buds feel like they don’t want to be IEMs and do their job. They’d rather be dislodged and forgotten at the bottom of a bed, where they belong. I only wish it were these buds that were lost and not my perfectly-mine-but-now-missing CMF buds. It should’ve been you, Astell and Kern. You suck even as a replacement bud.

S
Sivakumar subramaniam (Coimbatore)
Its excellent

Its excellent

Hi Sivakumar. Your notes on the Astell&Kern AK UW100MKII are much appreciated. It is a joy to help people like you hear music differently. ✨

S
Sivakumar Subramaniam (Coimbatore)
Its excellent

I feel the sound great, i feel i am hearing in wired setup that much separation and details in music , but i have issue with left bud not charged few more times so returned for exchange

A
Ariok 12 (Māyāpur)
good

nice

Thank you for sharing your thoughts and for the awesome ratings!

M
Mugesh (Chennai)
True Wireless IEMs

The detail and ultimate fidelity of the playback is one of the best I’ve ever heard from a True Wireless earphone. AK mobile app allows for adjustments to the frequency curve.

The touch interfaces is a bit…touchy.

Thank you for sharing your experience! We're thrilled you're enjoying the incredible detail and fidelity. Noted on the touch controls, hopefully future updates smooth that out!

Why Astell&Kern is Special

🇰🇷

Made in Korea

🎖️ Established & Reputed

Trust us, our reputation speaks for itself 🏆!


We believe that when a brand has decades of proven excellence, you can invest with confidence knowing your purchase is backed by years of audio engineering expertise. These products come from manufacturers with extensive histories of innovation and unwavering commitment to sonic excellence. Think of them like luxury watch brands their reputation has been earned through decades of consistent quality and innovation.


With their extensive history of innovation and countless satisfied customers worldwide, you can be confident your investment is backed by proven audio engineering expertise and industry leadership 📈.


When you see "🎖️ Established & Reputed" products, expect time tested excellence from manufacturers who've consistently demonstrated mastery in audio engineering for generations.

🙌🏻 Revered by Audiophiles

Audiophiles can be really picky 😤, and if the audiophile community says something sounds good, you can bet it's exceptional! We believe that earning audiophile reverence is like getting a standing ovation from music critics it doesn't happen unless you've truly achieved something special. This audio gear has earned widespread acclaim from audiophiles worldwide, a community renowned for exacting standards and unwavering commitment to high fidelity reproduction.


These discerning enthusiasts particularly value its extraordinary precision in sound reproduction and remarkable capability to create thoroughly immersive listening experiences. The audiophile community's endorsement carries significant weight because of their extensive experience with high end equipment 🏆.


When you see "🙌🏻 Revered by Audiophiles" products, expect audiophile grade excellence that satisfies even the most demanding listeners and consistently exceeds the highest standards.

🐣

Born in 2004

Why we love this TWS

🥜 Value for Money

We've found that the best gear isn’t always the most expensive. Some products punch well above their weight and deliver performance that rivals higher priced alternatives. That’s what we mean with the "Value for Money" badge. It’s our way of telling you that you’re getting something special without breaking the bank. 🥜


These products are all about maximum returns for minimal investment. You’re not just saving money you’re gaining an audio experience that exceeds expectations. Whether it’s build quality, tuning, or bundled accessories, these picks overdeliver.


When you see '🥜 Value for Money' products, expect impressive performance at an affordable price, making them a smart pick for budget conscious buyers or first time audiophiles.

🌱 Ideal for Beginners

Lost in the vast world of audio equipment?


Don't worry, we're here to guide you 🤝! We believe that everyone's audiophile journey should start with something approachable and welcoming. These carefully selected products serve as the perfect entry point into high quality sound, specifically chosen to help you navigate through sometimes overwhelming technical options. Think of them as your friendly neighbourhood guide who knows exactly where to start without getting lost in complex specifications.


These products strike an ideal balance between quality and accessibility, featuring user friendly designs and straightforward functionality. They're specifically selected as the perfect starting point for your audiophile journey, offering serious performance without intimidating complexity or premium pricing that might discourage exploration.


When you encounter "🌱 Ideal for Beginners" products, expect approachable excellence these are your stepping stones into the world of premium audio, designed to grow with your developing appreciation for great sound.

✂️ Use Wirelessly with Bluetooth

We tend to describe Bluetooth audio as wireless freedom with fewer strings attached literally. When you see Use Wirelessly with Bluetooth, it means you can pair your headphones or IEMs with phones, laptops, or even TVs all without reaching for a cable 🎶. It’s convenient, clutter free, and great for everyday listening.


What’s happening behind the scenes is your gear is using Bluetooth codecs like SBC, AAC, LDAC, or aptX to compress and transmit your music wirelessly. Better codecs mean higher quality and lower latency. Of course, there’s a trade off Bluetooth won’t match the quality of wired gear, but today’s advancements have made the gap much smaller than before.


When you see '✂️ Use Wirelessly with Bluetooth' products, expect: tangle free convenience and solid sound quality great for commuting, workouts, or casual listening.


⏳ Battery Life

In our experience, battery life is one of those things that separates a good day from a frustrating one. It's like having a fuel gauge you can rely on longer battery life means less charging and more uninterrupted music. Whether you're on a flight or just commuting across town, this is one spec you don’t want to overlook 🔋.


Technically, battery life refers to the hours your device can play music on a single charge. Today’s headphones and DACs can range from 4 to 40+ hours, depending on things like Bluetooth codec, volume, and active features like ANC. More battery life also means better travel and portability, though it might come at the cost of size or weight.


When you see '⏳ Battery Life' products, expect: longer listening sessions, fewer charging breaks, and stress free portability for music that goes the distance.

☎️ Works for Taking Calls

Need to take calls while enjoying your music?


These headphones have got you covered 📞! We've found that nothing's more frustrating than missing important calls because your headphones don't handle them well. These products come equipped with built in microphones and seamless call functionality, ensuring you never miss an important conversation while immersed in your audio experience. Think of them as your personal communication assistant that switches effortlessly between entertainment and business.


These devices are specifically engineered to provide crystal clear voice transmission during calls, featuring advanced noise cancelling technology that helps eliminate background interference. The intuitive controls make it simple to answer calls, adjust volume, and return to music without reaching for your phone.


When you see "☎️ Works for Taking Calls" products, expect versatile audio solutions that excel at both music playback and communication, perfect for professionals and anyone who values seamless connectivity.

☔ IPX Rating

We’ve found that IPX ratings are a bit like an umbrella you don’t always need it, but when you do, you’re glad it’s there ☔. “IPX Rating” tells you how resistant a product is to water and sweat, making it a crucial factor for outdoor use or workouts.


Now, here’s what’s actually happening: IPX is a standard that ranges from basic sweat resistance (IPX4) to full waterproofing (IPX7 or IPX8). It means your earphones won’t die on you mid run or if you're caught in a drizzle. Just remember, IPX ratings don’t cover dust or solid particles unless they have a second digit (like IP67). So, if you're near the beach or in the gym a lot, this is a badge to take seriously.


When you see '☔ IPX Rating' products, expect: sweat and splash resistant gear that won’t flinch in the rain, at the gym, or during your toughest workouts.

🔧 Tweak & Tune the Sound

Why settle for a fixed sound signature when you can shape your audio experience exactly to your preferences 🎛️?


We love products that put you in the driver's seat of your audio journey. These specialised headphones come equipped with sophisticated, customisable tuning capabilities that let you adjust every aspect of the frequency spectrum. Think of it like having a personal audio chef who can adjust the recipe to your exact taste more bass for your workout playlist, clearer mids for podcasts, or sparkling highs for classical music.


The adjustable sound signature means you can fine tune bass response, adjust midrange clarity, or enhance treble detail. Whether you prefer deep bass frequencies, crystal clear midrange presence, or pristine high frequency detail, these solutions put you in complete control of your sound 🎚️.


When you encounter "🔧 Tweak & Tune the Sound" products, expect complete sonic customisation that adapts perfectly to your unique listening preferences across different genres.

Why it Sounds Amazing

🔈 Balanced Armature Driver

Enjoy accurate and precise sound 🎯, because every nuance in your favourite music deserves to be heard with perfect clarity! We believe balanced armature drivers are like "precision instruments" that excel at reproducing intricate musical details. These incorporate tiny yet incredibly precise mechanisms that deliver audio reproduction with exceptional detail and accuracy. Think of them like Swiss watchmaking for audio incredibly small, incredibly precise, and engineered for perfection in every detail.


The compact design and efficient operation allow them to excel at reproducing intricate musical passages with outstanding precision and control, revealing every subtle detail and gentle texture 🔬.


When you see "🔈 Balanced Armature Driver" products, expect microscopic detail retrieval that reveals every subtle musical nuance with exceptional precision and clarity.

⚖️ Balanced Sound Signature

We've found that a balanced sound signature is like a well cooked meal, where nothing overpowers anything else and every ingredient gets its moment. Think of it as gear with no strong opinion about your music. In everyday listening this means you can go from rock to a jazz record to a podcast and never once feel like you picked the wrong headphone for the job 🎧.


Here's what's actually happening. No part of the frequency range is pushed forward at the expense of another. Bass has body without taking over, mids stay present, and treble adds clarity without bite. Small lifts may exist, but nothing shouts. The trade off is drama. A balanced tuning rarely stuns you in the first ten seconds, because it is built to still sound right in the tenth hour.


When you see "⚖️ Balanced Sound Signature" products, expect versatile, easy going sound that handles every genre you throw at it, ideal for a first serious pair or a one headphone collection.

😳 Ultra-Wide Sound Stage

Do you wish to bring the concert hall to your ears 🏛️?


We love describing ultra wide soundstage as "audio magic" that creates a breathtaking three dimensional environment around your head. These specialised headphones feature an exceptionally spacious soundstage that creates the illusion you're sitting in the sweet spot of a magnificent performance venue. Think of it like teleportation technology for your ears suddenly you're not wearing headphones, you're sitting in Carnegie Hall with perfect acoustics.


The precise instrument placement and remarkable sense of space work together to transport you directly into the music, making you feel as though you're experiencing a live performance. This creates a listening experience that's grand, enveloping, and incredibly detailed 🎭.


When you encounter "😳 Ultra Wide Soundstage" products, expect concert hall acoustics that make you forget you're wearing headphones through sheer spaciousness and realism.

🍿 Crisp Vocals & Instruments

Vocals and instruments sound so good, it's like a warm hug 🤗!


We believe that when vocals are reproduced correctly, they should feel like the artist is performing right there with you. These headphones demonstrate exceptional prowess in reproducing clear, articulate vocals and instruments, with each element rendered in stunning detail and separation. Think of it like having front row seats to an intimate acoustic performance where every breath, every string resonance, every subtle inflection comes through perfectly.


The natural timbre and tonal accuracy create an engaging presentation where every nuance is preserved while maintaining fatigue free listening. Each word, note, and subtle inflection is reproduced with outstanding definition and emotional connection 🎤.


When you encounter "🍿 Crisp Vocals & Instruments" products, expect vocal excellence that brings you closer to the emotional heart of every performance.

🍦 Smooth & Sweet Treble

Seeking something that sounds smooth and devoid of harshness 🥰? We tend to describe these headphones as having "silk like highs" that caress your ears rather than assault them. These products are meticulously designed to deliver high frequencies that are wonderfully gentle, offering a listening experience that's both sophisticated and delightful. Think of it like the difference between premium chocolate and cheap candy both are sweet, but one provides refined pleasure while the other can be overwhelming.


The carefully tuned treble presentation ensures musical details come through with remarkable clarity while maintaining natural, fatigue free character. The refined high frequency presentation maintains excellent detail and air while avoiding any hint of harshness or stridency ✨.


When you see "🍦 Smooth & Sweet Treble" products, expect refined high frequencies that deliver crisp detail with a touch of sweetness and sophistication.

🍰 Layered and Nuanced Sound

Imagine sitting in the second row of a grand music hall 🎼, where each instrument's placement creates a vivid sonic landscape before you. We believe these headphones recreate that precise spatial positioning, allowing you to distinctly perceive where each instrument would be on an imaginary stage. Think of it like watching an orchestra conductor you can follow each section independently while appreciating how they work together in perfect harmony. The layered presentation ensures every element occupies its own distinct space while contributing to the whole.


This audio equipment creates a detailed listening experience where musical notes, overtones, and reverberations shine through clearly, keeping complex passages distinct and well separated. The tuning excels at revealing subtle interplay between instruments and the natural ambiance of recording spaces 🎯.


When you see "🍰 Layered and Nuanced Sound" products, expect intricate soundscapes that reveal the depth, complexity, and artistry in your favorite music with exceptional clarity.

🥃 Perfect to Layback & Relax

In our experience, a laid back sound is like sinking into your favorite armchair after a long day. It doesn’t push details in your face or try to overwhelm you with energy. Instead, it gives your music room to breathe and unfold naturally. Think of it like sipping a glass of smooth whisky there’s warmth, body, and ease. These headphones or IEMs are ideal for those who want to unwind and soak in a mellow vibe, whether it's a jazz trio or acoustic singer songwriter set. 🎧


Now, what’s actually happening here is a tuning that gently rolls off the treble and offers a warm, full low end. The midrange stays intimate, while bass adds comfort without punch, and highs avoid fatigue, making long sessions a pleasure. You won’t get maximum detail or separation but that’s the point. It’s not about dissecting the mix it’s about relaxing into it. For bedtime listening or just zoning out, this is your sonic hammock. 😌

A full range BA driver with an inbuilt 32-bit AKM DAC makes the UW1000 MKII sound far better than its competitors. The 10-band Equaliser on the AK Control App is every Audiophile's best friend while 29 Hrs of battery backup make these my essential Everyday Carry.

- Ian Pereira

Astell&Kern Introduces The AK UW100MKII - A High-Resolution True Wireless Earbud

Astell&Kern presents AK UW100MKII, a true wireless earbud with the philosophy of delivering true playback. It features a 32-bit AK4332ECB DAC chip for accurate sound with Knowles balanced armature drivers for detailed and accurate audio. The Best in class Passive Noise Isolation with the perfectly designed shells delivers ambient-free audio with a snug fit. At the same time, you can switch between the four different ambient modes. The latest aptX™ Adaptive codec ensures lossless wireless audio transmission while supporting high-resolution sound. The Astell&Kern AK UW100MKII comes with a long-lasting battery life of 29 hours in total.

Featuring A High-Resolution AKM 32-bit DAC

Astell&Kern AK UW100MKII never compromises to deliver high-resolution audio, as it is equipped with AK4332ECB, a high-performance 32-bit DAC from AKM, it delivers unprecedented audio. Despite being a fully wireless earphone, this 32-bit DAC chip helps to deliver audio with detailed accuracy and low distortion to make it sound like the original audio.

aptX™ Adaptive For High Quality Wireless Audio

Astell&Kern AK UW100MKII features a high-performance QCC5141 system-on-Chip that supports aptX Adaptive, Qualcomm’s next-generation high-quality codec for wireless 24-bit sound quality. It has Bluetooth 5.2 that supports SBC, AAC and aptX™ Adaptive. The audio is enhanced through the aptX™ Adaptive and supports 24-bit through a bit rate of up to 420 kbps. The Astell&Kern AK UW100MKII features Qualcomm True Wireless Stereo Plus mode that reduces signal transmission as it transmits independent signals to each earbud for high-quality audio.

NOTE: To use the Qualcomm True Wireless Stereo Plus, the smartphone needs to support the Qualcomm True Wireless Stereo Plus.

The Best In Class Passive Noise Isolation

Astell&Kern AK UW100MKII houses the excellent PNI (Passive Noise Isolation) with perfectly crafted shells to effectively diminish the surrounding noises. The results? The ambient noise is completely removed across all frequencies. The PNI and the structure of the shell help to avoid the ambient noise and let you immerse into the music world. To activate the ambient mode, click the left earbud once to hear the ambient sounds and can switch between the four ambient modes by tapping or using the app.

Easy Pairing With Google Fast Pair & Connect With Two Devices At Once

The Astell&Kern AK UW100MKII supports Google’s fast pairing service with Bluetooth Low Energy Technology to pair with Android devices by opening the cradle of the device near the device for hassle-free pairing. It supports multi-pairing and multi-point functions to connect with two devices at once and easily switch while you listen to music on one device and actively receive phone notifications and calls from your smartphone.

Featuring A High-Resolution AKM 32-bit DAC

Astell&Kern AK UW100MKII never compromises to deliver high-resolution audio, as it is equipped with AK4332ECB, a high-performance 32-bit DAC from AKM, it delivers unprecedented audio. Despite being a fully wireless earphone, this 32-bit DAC chip helps to deliver audio with detailed accuracy and low distortion to make it sound like the original audio.

aptX™ Adaptive For High Quality Wireless Audio

Astell&Kern AK UW100MKII features a high-performance QCC5141 system-on-Chip that supports aptX Adaptive, Qualcomm’s next-generation high-quality codec for wireless 24-bit sound quality. It has Bluetooth 5.2 that supports SBC, AAC and aptX™ Adaptive. The audio is enhanced through the aptX™ Adaptive and supports 24-bit through a bit rate of up to 420 kbps. The Astell&Kern AK UW100MKII features Qualcomm True Wireless Stereo Plus mode that reduces signal transmission as it transmits independent signals to each earbud for high-quality audio.

NOTE: To use the Qualcomm True Wireless Stereo Plus, the smartphone needs to support the Qualcomm True Wireless Stereo Plus.

The Best In Class Passive Noise Isolation

Astell&Kern AK UW100MKII houses the excellent PNI (Passive Noise Isolation) with perfectly crafted shells to effectively diminish the surrounding noises. The results? The ambient noise is completely removed across all frequencies. The PNI and the structure of the shell help to avoid the ambient noise and let you immerse into the music world. To activate the ambient mode, click the left earbud once to hear the ambient sounds and can switch between the four ambient modes by tapping or using the app.

Easy Pairing With Google Fast Pair & Connect With Two Devices At Once

The Astell&Kern AK UW100MKII supports Google’s fast pairing service with Bluetooth Low Energy Technology to pair with Android devices by opening the cradle of the device near the device for hassle-free pairing. It supports multi-pairing and multi-point functions to connect with two devices at once and easily switch while you listen to music on one device and actively receive phone notifications and calls from your smartphone.

Enjoy Uninterrupted Music Playback With Long Lasting Battery

The Astell&Kern AK UW100MKII features an excellent battery that offers a continuous playback time with a minimum of 9.5 hours up to 29 hours. For charging, a Type-C interface is embedded. Fast charging for 10 minutes will offer a playback time of an hour. Why? To offer a continuous music listening experience without worrying about battery life.

Receptive Touch Controls To Quickly Access Various Features

Astell&Kern AK UW100MKII is equipped with complete touch control to access various features. One click on the left earbud turns on and off the ambient mode, a double click adjusts the ambient level, a triple click activates the voice assistance and a continuous click decreases the volume. One-click on the right earbud plays or pauses music and receives or hangs up the call, double-click plays the next song and rejects the call, triple-click plays the previous song, mutes the mic during the call and continuous press increases the volume.

Features Voice Assistant Support & Mic With cVc 8.0 For Clean Communication

Astell&Kern AK UW100MKII’s voice assistant support is activated when you click the left earbud thrice to control music playback, make phone calls and other smartphone functions with your voice. It features one microphone on each earbud with Qualcomm’s cVc generation 8.0 (clear voice capture) and echo cancelling features. For what? To provide crystal clear communication without capturing the background noises.

IPX4-rated Design For Waterproof And Sweat Resistant

Astell&Kern AK UW100MKII features an IPX4-rated design to use the TWS without worrying about water or sweat getting all-over it, making it ideal for daily use or listening to music while jogging, exercising or getting drenched in the rain.

Customise your Sound Signature using the AK Control App

Astell&Kern AK UW100MKII can be controlled by the AK control app to access many features to customise the touch controls, ambient levels, various EQ settings, touch key arrangement, and other functions. It is available for both Android and iOS users.

NOTE: Download the AK Control App on Android and iOS.
For Android users, that the AK Connect App is compatible with the latest version of Android 15. However, for users on Android 14, Astell&Kern will be releasing the AK Connect’s Android 14 update soon.

Enjoy Uninterrupted Music Playback With Long Lasting Battery

The Astell&Kern AK UW100MKII features an excellent battery that offers a continuous playback time with a minimum of 9.5 hours up to 29 hours. For charging, a Type-C interface is embedded. Fast charging for 10 minutes will offer a playback time of an hour. Why? To offer a continuous music listening experience without worrying about battery life.

Receptive Touch Controls To Quickly Access Various Features

Astell&Kern AK UW100MKII is equipped with complete touch control to access various features. One click on the left earbud turns on and off the ambient mode, a double click adjusts the ambient level, a triple click activates the voice assistance and a continuous click decreases the volume. One-click on the right earbud plays or pauses music and receives or hangs up the call, double-click plays the next song and rejects the call, triple-click plays the previous song, mutes the mic during the call and continuous press increases the volume.

Features Voice Assistant Support & Mic With cVc 8.0 For Clean Communication

Astell&Kern AK UW100MKII’s voice assistant support is activated when you click the left earbud thrice to control music playback, make phone calls and other smartphone functions with your voice. It features one microphone on each earbud with Qualcomm’s cVc generation 8.0 (clear voice capture) and echo cancelling features. For what? To provide crystal clear communication without capturing the background noises.

IPX4-rated Design For Waterproof And Sweat Resistant

Astell&Kern AK UW100MKII features an IPX4-rated design to use the TWS without worrying about water or sweat getting all-over it, making it ideal for daily use or listening to music while jogging, exercising or getting drenched in the rain.

Customise your Sound Signature using the AK Control App

Astell&Kern AK UW100MKII can be controlled by the AK control app to access many features to customise the touch controls, ambient levels, various EQ settings, touch key arrangement, and other functions. It is available for both Android and iOS users.

NOTE: Download the AK Control App on Android and iOS.
For Android users, that the AK Connect App is compatible with the latest version of Android 15. However, for users on Android 14, Astell&Kern will be releasing the AK Connect’s Android 14 update soon.

Gesture Control

Astell&Kern AK UW100MKII features a gesture control on both the earbuds to access with many features.

Meticulous Design

Astell&Kern AK UW100MKII is meticulously designed with contrasting surfaces of shapes, colours and high-quality materials for impeccable aesthetics.

Charging Case

Astell&Kern AK UW100MKII equips a Type-C port to charge the case and the earbuds for an extended listening journey.

Headphone-Zone-Astell-Kern-AK-UW100MKII

Accessories to Get you Started

1. Charging Case
2. Eartips (XS, S, M, L, XL)
3. USB Type-C Charging Cable
4. Quick Start Guide
5. Warranty Card


All You Need To Know About The Astell&Kern AK UW100MKII

Bluetooth Chip
Qualcomm 5141
Driver Unit
Knowles Balanced Armature
DAC
AKM AK4332ECB
Bluetooth Version
5.2
Bluetooth Codec
SBC, AAC, aptX™ Adaptive
Bluetooth Profile
HFP, A2DP, AVRCP


1 Year Warranty

Don't sweat it, this Astell&Kern - AK UW100MKII comes with a 1 Year warranty from Astell&Kern that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about Astell&Kern's warranty in India.

Luxury Meets Innovation: Difference in Sound Quality

Founded in October 2013 in South Korea, Astell&Kern is a premium audio brand renowned for its commitment to delivering uncompromised hi-res audio experiences. Derived from Greek, where "Astell" means "Stars" and "Kern" means "Core," the brand symbolizes the pursuit of capturing the essence of music—the "original sound." Astell&Kern addresses the decline in audio quality due to inferior formats like MP3, aiming to revive sound integrity for musicians and enthusiasts alike.

Their diverse product range, from audio players to earphones, reflects their dedication to precision and accuracy in sound reproduction. With acclaimed offerings like the Astell&Kern AK XB10 and Astell&Kern Billie Jean, they continue to enrich music and listening experiences globally, delivering soul-touching sound.

Explore Collection
The detail and ultimate fidelity of the playback is one of the best I’ve ever heard from a True Wireless earphone. The resolving power of the design really lets the listener peer into the music.
The UW100MKII have a feature common in true wireless earbuds: automatic wearer detection, so they can pause music when you remove them and resume it when you put the buds back in your ear.
The default EQ mode was our go-to for most genres, preserving high-frequency clarity while maintaining enough low-end oomph.
I think that Astell & Kern did a fantastic job with the UW100MKII: they sound great and offer the right amount of functionality, prioritising sound quality over gimmicky features.
With one balanced armature, the UW100MKII is able to deliver a great sound, with more details and transparency than most true wireless earbuds are capable of.
The transition from the upper midrange into the treble is rather seamless with very good clarity and detail. Percussion has excellent snap.

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Other Details


Generic Name True Wireless Earbuds
Importer Details Importers Name: Ferrari Video
Address: 63/18, 1st Main Road, Gandhi Nagar, Chennai - 600020
Contact No: 044-24420733
Net Quantity 1
Manufacturer Details Name: Dreamus Company
Address: 18-gil 5, Bangbaero, Seocho-Gu, Seoul, Korea 06664
Package Contents Astell&Kern AK UW100MKII Earbuds (L/R)
Charging Case
Eartips (XS, S, M, L, XL)
USB Type-C Charging Cable
Quick Start Guide
Warranty Card

Manuals & Guides



User Manual | AK UW100MKII

True Wireless Earbuds