Next-level True Wireless Sound
  • Dedicated, high performance 32-bit hi-fi grade DAC by AKM
  • aptX™ Adaptive wireless codec for low latency and support for 24-bit audio quality
  • Features Bluetooth 5.2 wireless technology for a more stable connection
  • Full range Knowles Balanced Armature drivers deliver ultra-detailed sound
  • Best-in-class passive noise isolation (PNI) with ambient mode
  • Redesigned power system for improved battery life: 9.5 hours playback, 19.5 hours from the case (29 hours total)
  • Case supports wireless and fast charging
  • Built with Qualcomm’s cVc Generation 8.0 (Clear Voice Capture) to deliver an exceptionally clear and more stable call quality
  • Proprietary iOS and Android app for customisation including an adjustable 10-band EQ to suit your sound preferences
  • Multi-Pairing and Multi-Point including Google’s Fast Pair Service to automatically connect the earbuds to Android devices using Bluetooth Low Energy
Sale price£269.00

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Next-level True Wireless Sound


Harnessing the strengths of its predecessor, the AK UW100MKII goes one step further to set a new standard in true wireless sound. Boasting a refreshed ergonomic design and an improved wireless playback, the next-level earbuds deliver uncompromising, exquisite Hi-Fi sound thanks to endless research to build upon the renowned qualities of the award winning AK UW100.


Dedicated DAC

With its separate and dedicated AK4332, 32-bit high-performance DAC (Digital-to-Analogue Converter), working in tandem with Astell&Kern’s proprietary AMP technology employed in its award-winning DAPs (Digital Audio Players), the AK UW100MKII is geared for a clearer, more accurate and dynamic audio performance.

Latest wireless technology

To realise the AK UW100MKIIs leading wireless performance, the next gen, high-quality aptX™ Adaptive codec is supported, expertly adjusting the bite rate according to the wireless environment it is operating to reduce latency issues (it supports up to 24-bit audio at a bit rate of 420kps). Support for the latest Bluetooth 5.2 provides greater range and a more stable wireless connection.

Best in-class passive noise isolation

With an ergonomic and lightweight earbud design developed through countless simulations, the AK UW100 offers best-in-class passive noise isolation (PNI) to enable a truly immersive experience when listening to music in clamorous environments. Unlike generic Active Noise Cancellation that concentrates on blocking out low-frequency noise, PNI efficiently minimises unwanted ambient noise in the mid and high range.

Improved call quality & touch controls

The AK UW100MKII is built with Qualcomm’s cVc Generation 8.0 (Clear Voice Capture) to deliver an exceptionally clear and more stable call quality. Clear Voice Capture technology keeps background noise to a minimum in noisy environments, and focuses on the voice to produce consistent, crystal-clear audio.

Hi-Fi sound, for longer

The power system in the AK UW100MKII has been redesigned to increase wireless playback time to 9.5 hours of continuous playback with a total of 29 hours total playback with the accompanying charging case. While also dramatically reducing the size of the charging cradle, the AK UW100MKII achieves an impressive one hour of continuous playtime from only a 10-minute charge.

Astell&Kern UW100MKII

Included in the box

  • 2x AK UW100MKII true wireless earbuds
  • 5x Silicon ear tips (5 sizes: S, M, L, XL, XXL)
  • 1x Charging case
  • 1x USB charging cable
  • 1x Quick start guide
whats in the box
General Specifications
BT Chipset
Qualcomm 5141
Driver type
Knowles Balanced Armature
Bluetooth Version
Bluetooth Codec
SBC, AAC, aptX™ Adaptive
Bluetooth Profile
Sound Pressure Level (SPL)
94dB (1m@1kHz)
Earbud Control
Capacitive Touch
Proximity Sensor
2-mic /per earbud
Playback Time
Approx. 9.5hrs (Total 29hrs)
C Type for charging
Wireless Charging
Yes (third party wireless charging accessory required)
Control App
Android and iOS version
Voice control
Support for Apple Siri and Google Assistant
Firmware Upgrade
OTA (Over-The-Air)
Weight (Earbuds)
approx. 7g
Weight (Charging Case)
approx. 65g
IPX Rating