KEF Noise Cancelling True Wireless Earphones Mu3 User Manual

June 7, 2024
KEF

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Mu3
Noise Cancelling True Wireless Earphones

Cancelling True Wireless Earphones Mu3

Sound by KEF. Design by Ross Lovegrove.
With KEF’s Mu3 Noise Cancelling True Wireless Earphones you are free to enjoy pristine sound everywhere. KEF has once again collaborated with visionary designer Ross Lovegrove, the latest step in a relationship that started with the incredible Muon loudspeakers, through Muo Bluetooth speakers and now the Mu3 earphones. Designed to be both comfortable and elegant, Mu3’s flowing, sculptural lines and smart engineering ensure a perfect fit while also delivering exceptional sound on the move.

KEF’s signature pure and accurate sound

Each of the Mu3 earphones’ sculptural enclosures contains an 8.2mm full-range dynamic driver. These are expertly tuned by the same KEF engineering team responsible for our loudspeakers, ensuring consistently pure and accurate sound on the move, with rich midrange, detailed bass and crisp high tones, capable of revealing even the most subtle nuances of music.

All-day, anyway

Active Noise Cancellation
The audio performance of the Mu3 earphones benefits from KEF’s specially tuned Active Noise Cancellation, which eliminates external noise without affecting the details that bring music to life. The earphones also boast Ambient Mode, where at the touch of a button Active Noise Cancellation is disengaged and instead the audio picked up on the microphones is played through the earphones, bypassing passive noise reduction and providing you with instant clarity on what is going on around you.

Hassle-free with Bluetooth 5.0
Mu3’s audio performance is further enhanced by the introduction of simultaneous transmission, where both earphones receive a signal at the same time, rather than the more usual approach where audio is sent to one earpiece and relayed to the other, therefore running the risk of introducing latency. Coupled with Bluetooth 5.0 connectivity, simultaneous transmission means the Mu3 earphones deliver a seamless performance, are simple to connect and exceptionally stable on both iOS and Android devices.

Hassle-free with Bluetooth - New

All-day listening and fast charging
A high-capacity battery combines with smart power management and fast-charge technology to ensure the Mu3 earphones keep going as long as you do. Mu3 can keep you entertained for up to 24 hours, with 9 hours on-board battery life, plus up to 15 hours with the charging case, and if you are desperate to use them quickly, fast charging delivers a full hour of use from only 5 minutes charging. And don’t worry if you get caught out in a shower, because with their IPX5 splash-proof design, these headphones are good for a little dancing in the rain.

![KEF Noise Cancelling True Wireless Earphones Mu3 - Design by Ross Lovegrove

Comfort and ease

Compact, ergonomic design
The Mu3 earphones are perfectly balanced in the ear thanks to the smart way they are weighted, which stops them wanting to fall out. A comprehensive analysis of different ear shapes and sizes has led to the development of four subtly different sized ear tips that are designed to rest on the ear concha to ensure you get the most comfortable fit for your ears, while also providing the perfect seal for noise isolation and to keep them securely in place.

Summary of features

  • Active Noise Cancellation tuned to eliminate external sound while preserving nuance and detail
  • 8.2mm full-range dynamic driver engineered to reveal the smallest details of your favourite music
  • Bluetooth 5.0 for exceptionally stable connections with both iOS and Android devices
  • Ergonomic design for comfort and fit
  • IPX5 splash-proof design for all weather conditions
  • Up to 24-hours use (9 hours at full charge; plus 15 hours with charging case)
  • Fast charging of 5 mins for 1-hour use
  • 4 sets of ultra-soft silicone ear tips for optimal comfort and fit (large, medium, small, short)

Intuitive control
KEF’s engineers understand that control is vital when using earphones, which is why the Mu3 earphones feature a highly intuitive, incredible responsive user interface. And because we know you may be doing other things while you listen to music, each of the earbuds includes a multi-function button for full control of music playback, volume and calls for instant control when only one hand is free.

KEF Noise Cancelling True Wireless Earphones Mu3 - Intuitive
control

Design by Ross Lovegrove

Renowned for his innovative approach and flowing, sculptural forms, Ross Lovegrove brings a new dimension to sound. Through design that embraces both beauty and technological ingenuity, Lovegrove’s ongoing collaboration with KEF is an exercise in aesthetic and engineering excellence.
The Mu3 earphones may be small, but they radiate a sculptural look and feel that belies their compact dimensions. The collaboration with Ross Lovegrove has once again resulted in a product that is the very definition of technology as art, and a design that smartly complements the KEF philosophy.

All-day listening and fast charging - new

Specifications

Model Mu3
Speaker drivers 8.2mm
Frequency range 20-20000Hz
Sensitivity 104dB/1mW at 1KHz (1KHz 1mW)
Impedance 16Ω
Max power output 5mW
Bluetooth 5.0
Codec SBC, AAC
Bluetooth Power ≤13dBm
Bluetooth range 10m
Bluetooth frequency 2.402GHz-2.48GHz
Li-ion rechargeable battery 50mAh (earbud)/ 350mAh (charging case)
Battery play time (earbud) 9 hrs (BT + ANC on)
Battery play time (charging case) 15 hrs
Fast charging for 5 mins 1 hr battery play time
Dimension (H x W x D) 24.5 x 17.5 x 26.3 mm (earbud)

33.5 x 62 x 52 mm (charging case)
Weight| 5.8 g (earbud)
46.8 g (charging case)
Operating temperature| -10°C to 45°C
Power Input| DC 5V 600mA

In the box

  • Mu3 Noise Cancelling True Wireless Earphones
  • Charging case with built-in wireless charging
  • USB-C charging cable
  • 4 sets of silicone ear tips
  • Quick start guide, warranty

KEF Noise Cancelling True Wireless Earphones Mu3 - In the box -
new

Visit: KEF.com for more about KEF and its products.
KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.

02.2021 | Mu3

References

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