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KEF Mu3

True wireless noise-canceling headphones with Bluetooth®

Item # 991MU3TW

KEF's entry into truly wireless earbuds lets you take the company's world-renowned sound anywhere you'd like.

KEF's entry into truly wireless earbuds lets you take the company's world-renowned sound anywhere you'd like.

Item # 991MU3TW

Ships free today

In stock
$229.99

About the KEF Mu3

An impressive wireless headphone debut from a world-famous speaker company

KEF's debut into the world of truly wireless earbuds is an elegant one. Ross Lovegrove, a sculptor and artist who helped KEF design their flagship Muon speakers, had a hand in designing them. These stylish earbuds provide detailed, accurate sound and punchy bass thanks to their expertly designed 8.2mm drivers. Couple that with their active noise cancellation and their splash-proof design, and you get a recipe for enjoyment no matter where you go.

An impressive wireless headphone debut from a world-famous speaker company

KEF's debut into the world of truly wireless earbuds is an elegant one. Ross Lovegrove, a sculptor and artist who helped KEF design their flagship Muon speakers, had a hand in designing them. These stylish earbuds provide detailed, accurate sound and punchy bass thanks to their expertly designed 8.2mm drivers. Couple that with their active noise cancellation and their splash-proof design, and you get a recipe for enjoyment no matter where you go.

All-day listening

The Mu3s offer up to nine hours of music listening with noise cancellation. making their battery life one of the longest out there for true wireless earbuds. The charging case extends your listening time further by offering an additional 15 hours of power. The case can also quick-charge your earbuds — five minutes in the case gets you an hour of listening time.

Touch controls

Each earbud has a multi-function button that gives you access to the full suite of controls — great for when you don't have both hands free. You can play and pause your music, as well turn the volume up and down and skip tracks. If you get a phone call, you can use the button on either earbud to pick the call up and hang it up when you're done.

Advanced Bluetooth

With many true wireless in-ear headphones, one earbud pairs to your phone and then transmits signals to the other earbud. But not with the Mu3s. Here, each earbud has an indepedent Bluetooth connection to your phone. That drastically reduces the chance of latency and also means you can take calls, listen to music, and control either with just one earbud in.

Less noise, more music

A  sophisticaed active noise cancellation system blocks out external noise without compromising on sound quality. Don't want noise cancellation? Use the multi-function button on either earbud to switch to Ambient Mode, which lets you bypass that feature. Any sounds picked up by the built in microphones are played through the earbuds so you can hear happening around you.

Lightweight and snug for a comfortable fit

KEF designed these earbuds for maximum comfort. Their lightweight, well-balanced design helps them stay in place. And the four sizes of included ear tips ensure a snug fit and a perfect seal for proper noise isolation.

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Product highlights:

  • 100% wire free earbuds designed by Ross Lovegrove
    • no connecting cord or neckband between left and right earbuds
  • Bluetooth 5.0
    • both earbuds receive a signal at the same time
  • IPX5-rated splash-proof design
  • multi-function button on each earbud for music playback, volume, and calls
  • specially tuned active noise cancellation
    • Ambient Mode disengages noise cancellation and lets you hear what's going on around you
Battery specs:
  • 24-hour total battery life
    • earbuds: 9 hours at full charge
    • charging case: 15 hours at full charge
  • fast charging: 5 minutes of charge nets 1 hour of use
  • case charges with USB-C cable
Specs:
  • 8.2mm dynamic driver in each earbud
  • comes with 4 silicone ear tips (large, medium, small, and short)
  • frequency response: 20-20,000 Hz
  • weight:
    • earbuds: 0.2 ounces
  • charging case: 1.7 ounces
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # MU3

What's in the box:

  • Left and right wireless ear buds (Silver grey)
  • Charging case (Silver grey)
  • 4 Pairs of silicone ear tips (1 pair installed)
  • 22" USB charging case (Type A USB on one end and USB-C on other end)
  • Quick Start Guide
  • Important Safety Information
  • Warranty Information
  • Design by Lovegrove card

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More details on the KEF Mu3

Mark G.

Features & specs

General
Fit Style In-ear/Earbud
Earcup Type Closed
Earcup Width x Height 0.997" x 0.692"
Noise-canceling Yes
Bluetooth Yes
Bluetooth Version 5.0
Single-earbud Operation No
Mic For Taking Calls Yes
Voice Assistant Access
Amazon Alexa No
Google Assistant No
Siri No
Connectors
3.5mm No
1/4" No
Lightning No
4.4mm balanced No
XLR4 balanced No
2.5mm No
Other None
Specs
Frequency Response 20-20k Hz
Sensitivity 104 dB
Impedance 16 Ohms
Weight 0.45 ounces
Cord Length N/A
Parts Warranty 2 Years (1 Yr drivers)
Labor Warranty 2 Years (1 Yr drivers)

Product Research

Features

Overview: The KEF Mu3 Noise Cancelling True Wireless Earphones were designed by Ross Lovegrove, who also brought us KEF's famous Muon loudspeakers and Muo Bluetooth speakers. With Lovegrove's flowing sculptural lines and KEF-engineered 8.2mm dynamic drivers, the Mu3 earphones deliver KEF's signature sound. The earphones come with a sculpted charging case, 4 pairs of silicone ear tips, and a USB-C charging cable. The Mu3s are warranted for 2 years, while the drivers carry a 1 year warranty.

Drivers: The Mu3's 8.2mm drivers were designed and tuned by the same engineering team that designs KEF's loudspeakers. These full-range drivers deliver the pure and accurate KEF signature sound with detailed bass, rich midrange, and crisp highs. The drivers feature ergonomically-balanced housings that stay in the ear. The ear tips have a splash-proof IPX5 rating, so you can wear them in all types of weather. Four sizes of ear tips (large, medium, small, and short) are included to ensure the perfect seal to isolate noise and hold them in place.

Bluetooth 5.0: The Mu3 earphones receive the wireless Bluetooth signal simultaneously, instead of relaying the signal from one ear bud to the other, to reduce latency. In addition, the earphones are equipped with Bluetooth 5.0 which provides easier connectivity, more stability, and fewer dropouts. Supported codecs include SBC and AAC.

ANC/Ambient Modes: The KEF Mu3 earphones have Active Noise Cancellation (ANC) to eliminate external noise so you can hear only your music with no distractions. KEF's specially tuned ANC uses external microphones to pick up ambient noise, then applies an equal-but-opposite audio signal to cancel out the ambient noise. When you need to be more aware of your surroundings, Ambient Mode actually plays the sound picked up by the microphones through the earphones. This lets you carry on conversations, hear public announcements, or just hear what's going on around you without removing the earphones. You can cycle through ANC and Ambient modes (and ANC Off) with repeated short presses of the left ear bud's multi-function button.

Controls: Each ear bud is equipped with a multi-function button with an intuitive user interface to control your music playback and phone calls. With a combination of short and long presses of the multi-function buttons, you can raise and lower the volume of your music or phone call, play/pause and skip forward your music, activate ANC and Ambient modes, and answer/reject/end phone calls. You can also enable voice controls. The Mu3 controls are as follows:

Function Left Button Right Button
Volume Long Press Volume Down Long Press Volume Up
Pause/Play Music --- Short Press
Skip Forward Music --- 2 Short Presses
ANC On / Ambient / ANC Off Short Press to cycle through functions ---
Voice Control 2 Short Presses ---
Answer / Hang up Phone Call --- Short Press
Reject Incoming Call --- 2 Short Presses
Mute Microphone 2 Short Presses ---

Battery Power: Each ear bud contains a 50mAh Lithium-ion rechargeable battery, while the charging case has a 350mAh battery. The ear buds and charging case charge via USB using the included USB-C cable. No full charging time is provided, however, a 5-minute quick charge provides approximately 1 hour of battery life. The ear buds have approximately 9 hours of playback time with Bluetooth and ANC on. The charging case stores enough battery for an additional 15 hours, for a total of 24 hours playback time.

Specifications:

  • Frequency Range: 20Hz to 20kHz
  • Sensitivity: 104dB (1 mW at 1kHz)
  • Impedance: 16Ω
  • Max Power Output: 5 mW
  • Bluetooth Range: 10 meters (33 feet)
  • Power Input: DC 5V 600mA
  • Dimensions:
    • Ear Buds: Width 0.997", Height 0.692", Depth 0.9"
    • Charging Case: Width 2.445", Height 1.317", Depth 2.05"
  • Weight:
    • Ear Buds: 0.45 ounces (both)
    • Charging Case: 1.65 ounces (empty)

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