Hybrid Technology
Knowles Drivers
True Wireless
AptX Codec


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The AK UW100, Astell&Kern’s first fully wireless earphone based on their proprietary sound technology, provides uncompromising Hi-Fi sound even in wireless settings. A rarity in True Wireless Stereo (TWS), it has a separate embedded high-performance 32-bit DAC as well as a Balanced Armature driver for accurately reproducing sound, allowing the delivery of precise, high-quality sound without losing the details. It also boasts aptX-Adaptive audio codec support for exceptional audio quality, the final flourish to prime this product for wireless Hi-Fi sound.

Between all these features, its ergonomic design and best-in-class passive noise isolation (PNI) capability, the AK UW100 takes your music experience into a dimension where only you and the artist exist.

A New Standard for Wireless Sound
The AK UW100 reproduces sound on a whole new level compared to the BT-chipset-integrated DAC. Moreover, it enables clearer and more accurate sound in all genres by adopting the Knowles BA driver, which is typically used in expensive IEM systems, instead of the dynamic drivers that are common in generic TWS systems. The AK UW100 delivers true wireless Hi-Fi sound like you have never experienced.

Complete Immersion in the Music
Unlike generic ANC that concentrates on blocking low-range noise, PNI can efficiently block unwanted ambient noise in the mid- and high-range, as well as high-pitched, sharp sounds. Notably, the AK UW100 also matches up to the noise-blocking capabilities of ANC even in the low range as well. Another significant feature is that the sound quality is retained, as noise is attenuated by the structure of the earbuds rather than by software. Developed through countless simulations, the AK UW100’s best-in-class PNI capability allows you to escape annoying ambient noise and immerse yourself in an experience where only you and the artist exist.

Premium Bluetooth, Fit for Hi-Fi Sound
AK UW100 features powerful wireless performance made possible through Premium Tier QCC5141, support for aptX™ Adaptive, Qualcomm’s next-generation high-quality codec for 24-bit sound quality even in wireless settings, and Bluetooth 5.2 support, for better connectivity than previous models.

Battery Performance as Impressive as the Sound Quality
With AK UW100, there are no worries about continuous playback time, one of the key features of TWS systems. The earbuds alone stay running for a minimum of 6 hours and up to 24 hours, so you can enjoy music all day without worrying about power. Alongside the convenience of wireless charging, AK UW100 also supports fast charging, so you can charge for 10 minutes to play for an hour.

Easy, Full-Touch Control
Precise full-touch control is enabled so you can simply tap to switch between functions: play music, answer calls, activate ANC, adjust the volume and more.

Dual Mics for Clear Voices in Calls
Integrating a Voice Communication Package (VCP) from voice application specialist Alango, AK UW100 enables quality calls with clear voices. Based on special Echo-Cancellation and Noise-Suppression technologies, it effectively reduces noise in a variety of settings and environments, ensuring the stability of calls.

Easy Configuration with Astell&Kern’s Proprietary App
Install the exclusive app to access various functions and configure the device with ease. With the app, you can customize the touch controls, ambient levels, various EQ settings, and more.

Weight 1 kg
Dimensions 25 × 15 × 20 cm



South Korea






Driver Configuration

Single Dynamic

Driver Count


Audio Range


16 Ohm


1.2m 4N Pure Silver & 7N OCC Copper Hybrid. 2.5mm to 3.5mm Adapter Included

Google Product Name

Astell&Kern AK Zero1

What Is Included

  • 1 x 2.5mm Balanced Cable
  • 1 x 3.5mm connector
  • 3 Sizes of Silicon Ear tips (S,M,L)
  • Carrying Case


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