Home Headphones Kef Mu7 Vs. Bang & Olufsen Beoplay Portal

A Review By Comparison of the Kef Mu7 Vs. Bang & Olufsen Beoplay Portal

Last updated on Apr 13, 2023   10 minute read
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Bang & Olufsen Beoplay Portal

Bang & Olufsen Beoplay Portal

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Reasons why you might like the Bang & Olufsen Beoplay Portal

Overall Score 6.6 Represents average audio ecosystem compatibility score.

  • Weight of 282 g
  • Has Active Noise Cancellation (Anc)
  • Battery Life of 24 hours
  • Can Be Used Wirelessly
VS

Reasons why you might like the KEF Mu7

Overall Score 6.4 Represents average audio ecosystem compatibility score.

  • Weight of 309 g
  • Has Active Noise Cancellation (Anc)
  • Battery Life of 40 hours
  • Can Be Used Wirelessly
  • Has Ambient Sound Mode

A summary of the review by feature comparison

Category Features Bang & Olufsen Beoplay Portal KEF Mu7
DESIGN weight 282g 309g
has a detachable cable
has a tangle free cable
has an open-back design
cable length 1.25meters
has an over-the-ear foam
has stereo speakers
SOUND QUALITY has active noise cancellation (anc)
has passive noise reduction
lowest frequency 20hz 20hz
highest frequency 22,000hz 20,000hz
sound pressure level 95db/mw 96db/mw
driver unit size 40mm 40mm
impedance 24ohms 20ohms
has a neodymium magnet
POWER battery life 24hours 40hours
charge time 3hours 2hours
has a battery level indicator
battery power 1,200mah 100mah
has a rechargeable battery
CONNECTIVITY can be used wirelessly
bluetooth version v5.1 v5.1
has usb type-c
has aptx adaptive
has aptx hd
has bluetooth aptx
has aac
maximum bluetooth range 12meters 10meters
has a 3.5mm male connector
MICROPHONE number of microphones 4only 4only
has a noise-canceling microphone
EXTRAS has ambient sound mode
has a mute function
multipoint count 2only 2only
control panel placed on a device
can be used as a headset
warranty period 3years
travel bag is included
has dolby atmos
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A breakdown of the review per specifications

Design

Weight

Bang & Olufsen Beoplay Portal 282g
KEF Mu7 309g

The KEF Mu7 have a weight of 309g, these weigh below 320g, which we consider as the highest average a headphone should weigh for comfort during long use. We prefer a lower weight best for the reason that lighter devices are more comfortable to move with.

The Bang & Olufsen Beoplay Portal, at 282g are lighter than the KEF Mu7 with a difference -27g

Has A Detachable Cable

Bang & Olufsen Beoplay Portal
KEF Mu7

Detachable cables are cables that have connectors on both ends. One end goes into your headphone cups, while the other end is inserted into an audio source. Some new headphones, and not just the expensive ones, are coming with detachable cables, KEF Mu7 are one of those.

With a detachable cable, Bang & Olufsen Beoplay Portal too can use alternative cables and if the cable is pulled, it will pop out instead of breaking.

Has A Tangle Free Cable

Bang & Olufsen Beoplay Portal
KEF Mu7

Twisted headphone cables can be a great source of annoyance and inconvenience, KEF Mu7's cable is designed to minimize tangling. Constant twisting of the cables can also lead to microfractures in the copper wires, affecting sound quality, or rendering your headphones defective.

Bang & Olufsen Beoplay Portal too have a cable designed to help prevent tangles.

Has An Open-Back Design

Bang & Olufsen Beoplay Portal
KEF Mu7

Headphones that are designed to allow air to pass through their ear cups from the rear of the speaker driver unit are known as open-back. This design provides a very natural and accurate sound, Bang & Olufsen Beoplay Portal have this kind of design which means that resonances and low-frequency that tend to build up caused by the rear enclosure are no longer a concern.

Cable Length

Bang & Olufsen Beoplay Portal 1.25meters
KEF Mu7

A long cable ensures more freedom of movement, but remember that every cable based on the conducting material used has a certain amount of parasitic resistance, inductance, and capacitance. How much depends on the length and construction. Bang & Olufsen Beoplay Portal comes with a 1.25meters cable.

Has An Over-The-Ear Foam

Bang & Olufsen Beoplay Portal
KEF Mu7

Over-ear headphones have larger earpads that fit around your entire ear KEF Mu7 have a comfortable full-size form with earcups that fully enclose your ears. This design is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors.

Bang & Olufsen Beoplay Portal with this design offer potential for maximum bass and loudness levels.

Has Stereo Speakers

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 have stereo speakers, devices with stereo speakers deliver sound from separate channels on both left and right sides, creating a richer sound and a better listening experience.

The Bang & Olufsen Beoplay Portal also have stereo speakers

Bang & Olufsen Beoplay Portal
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Sound Quality

Has Active Noise Cancellation (Anc)

Bang & Olufsen Beoplay Portal
KEF Mu7

Active noise cancellation uses more advanced technology to actively counter noise. How it works, it listens to the sound pattern outside and inside the earbud and then inverts the soundwaves to cancel it out. In simple terms, it's like taking +1 outside (noise from your surrounding) and adding -1 inside (counter sound within the device) to make 0 hence "diluting" the noise.

KEF Mu7 allow you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise.

Bang & Olufsen Beoplay Portal too have active noise cancellation making both devices ideal for plane rides and morning commutes. Each may work with different noise cancellation modes, pick the setting, mode, or noise cancellation type that suits your commute or that enhances your relaxation time.

Has Passive Noise Reduction

Bang & Olufsen Beoplay Portal
KEF Mu7

Passive Noise Cancellation uses well-designed ear cups to seal out unwanted noise. This is used for both in-ear earphones and over-ear headphones where the headphone itself will keep surrounding noise out. The KEF Mu7 sits tightly in place, creating an acoustic seal that reduces background noise and prevents your music from leaking out.

Both of these devices have passive noise reduction which means that also the Bang & Olufsen Beoplay Portal isolates you from ambient noise instead of actively using technology to cancel it out.

Lowest Frequency

Bang & Olufsen Beoplay Portal 20hz
KEF Mu7 20hz

Low-frequency response measures if and how well a particular audio component reproduces low audible frequencies and if it makes any changes to the signal while at it. KEF Mu7's lowest frequency is at 20Hz, the lower the low-frequency response, the stronger and juicier the bass.

Bang & Olufsen Beoplay Portal's lowest frequency is at 20Hz, this means that both devices produce equal bass

Highest Frequency

Bang & Olufsen Beoplay Portal 22,000hz
KEF Mu7 20,000hz

High frequency response measures if and how well a particular audio component reproduces high audible frequencies and if it changes to the signal while at it. KEF Mu7's highest frequency is at 20,000Hz, the higher the high-frequency response, the clearer and crispier the treble.

Bang & Olufsen Beoplay Portal's highest frequency is at 22,000Hz, this implies that Bang & Olufsen Beoplay Portal got a clearer and crispier treble than the KEF Mu7

Sound Pressure Level

Bang & Olufsen Beoplay Portal 95db/mw
KEF Mu7 96db/mw

Sound pressure is the average variation in atmospheric pressure caused by the sound, the sound level .i.e how loud something is can be perceived differently by different people so we need to have the means to get an objective measurement of sound level expressed in numerical terms.

The sound pressure level, SPL, is the pressure level of a sound, measured in decibels, dB, KEF Mu7's measurement is 96dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

Bang & Olufsen Beoplay Portal's sound pressure level measurement is 95dB/mW.

Driver Unit Size

Bang & Olufsen Beoplay Portal 40mm
KEF Mu7 40mm

The driver unit is the component that produces sound in the device, its size dictates the loudness of the headphone. KEF Mu7 driver unit is 40mm in diameter, bigger drivers are more powerful and can produce better bass.

Bang & Olufsen Beoplay Portal driver unit is 40mm in diameter, making both devices similar in how loud their sound gets , many people have a misconception that driver units of a bigger size automatically produce better sound quality.

However, large drivers usually have difficulty reproducing high frequencies so yes, larger drivers are capable of generating louder sound, but this does not mean that they produce better sound.

Impedance

Bang & Olufsen Beoplay Portal 24ohms
KEF Mu7 20ohms

Impedance is the device's resistance to the electromagnetic current, as electricity flows through a wire, it experiences electrical resistance that counters the flow of current. The resistance of a conductor is measured in ohms. KEF Mu7's impedance is 20Ohms, the lower the impedance, the easier it is to get higher volume and requires less power.

Bang & Olufsen Beoplay Portal's impedance is 24Ohms. The impedance of earbuds is the electrical resistance of the driver unit present on the inside.

Has A Neodymium Magnet

Bang & Olufsen Beoplay Portal
KEF Mu7

Neodymium magnets if used in audio devices produce a higher sensitivity and substantial sound output while using less power. They can help produce music at quite a high sound pressure level, SPL, with the use of high magnetic flux. The KEF Mu7 have this type of magnet.

Bang & Olufsen Beoplay Portal have it too, devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. It is also known that they have more bass and clear high notes.

Power

Battery Life

Bang & Olufsen Beoplay Portal 24hours
KEF Mu7 40hours

If your headphones play wirelessly, cancel ambient noise, or enhance your listening experience with active features, their battery life will reduce over time. The device's battery life is given by the manufacturer, with longer battery life, you get to use it for longer and have to charge the device less often. KEF Mu7's battery life is 40 hours

Bang & Olufsen Beoplay Portal's battery life is 24 hours. Each time you recharge your headphones, they get a little less listening time. The effect is barely noticeable at first. But over a few years, you may find that your device, no longer plays for long like it used to.

Charge Time

Bang & Olufsen Beoplay Portal 3hours
KEF Mu7 2hours

It takes 2 hours to fully charge the KEF Mu7's battery. It is recommended to fully charge the battery before using the headphones for the first time or when they have been unused for extended periods.

Bang & Olufsen Beoplay Portal takes 3 hours to fully charge the battery

Has A Battery Level Indicator

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 have a battery level indicator, an indicator shows you when the device has a low battery. The battery indicator lights indicate the charging status of your headphones.

Battery Power

Bang & Olufsen Beoplay Portal 1,200mah
KEF Mu7 100mah

Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. KEF Mu7's battery power is 100mAh, more battery power can be an indication of longer battery life.

Bang & Olufsen Beoplay Portal's battery power is 1,200mAh.

Has A Rechargeable Battery

Bang & Olufsen Beoplay Portal
KEF Mu7

A rechargeable battery is a type of electrical battery that can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use. KEF Mu7's battery can be recharged and used over again.

The Bang & Olufsen Beoplay Portal too have a rechargeable battery.

Bang & Olufsen Beoplay Portal
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Connectivity

Can Be Used Wirelessly

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 can be used wirelessly, wireless devices allow users more freedom of movement.

The Bang & Olufsen Beoplay Portal also can be used wirelessly

Bluetooth Version

Bang & Olufsen Beoplay Portal v5.1
KEF Mu7 v5.1

Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. KEF Mu7 has a v5.1

Bang & Olufsen Beoplay Portal has a Bluetooth version of v5.1. Newer versions provide faster data transfers.

Has Usb Type-C

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 support USB TYPE-C, an industry-standard connector for transmitting both data and power on a single cable. The USB-C plug is now part and parcel of most current laptops, phones, and tablets, it features reversible plug orientation and cable direction.

Bang & Olufsen Beoplay Portal too have USB TYPE-C

Has Aptx Adaptive

Bang & Olufsen Beoplay Portal
KEF Mu7

Bang & Olufsen Beoplay Portal support APTX Adaptive, an audio codec for Bluetooth devices that are developed by Qualcomm. It has a variable bit rate (between 279kbps and 420kbps), which means it can adjust the bit rate for different scenarios, such as listening to HD audio or reducing interference from other devices.

Has Aptx Hd

Bang & Olufsen Beoplay Portal
KEF Mu7

The KEF Mu7 support APTX HD, an audio codec for Bluetooth devices that are developed by Qualcomm. It supports high-quality 24-bit audio (at a bit rate of 576kbps).

Bang & Olufsen Beoplay Portal support APTX HD too.

Has Bluetooth Aptx

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 support APTX, a codec used for transmitting audio wirelessly with Bluetooth. It is developed by Qualcomm and supports 16-bit audio at a bit rate of 384kbps.

Bang & Olufsen Beoplay Portal support APTX

Has Aac

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 support AAC, a codec that is used for Bluetooth audio. It supports 24-bit audio at 250kbps. Because it uses psychoacoustic modeling, it can provide better results than other codecs at a similar bit rate.

Maximum Bluetooth Range

Bang & Olufsen Beoplay Portal 12meters
KEF Mu7 10meters

Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances. The KEF Mu7 can connect at a 10meters distance via Bluetooth or infrared to another device.

The Bang & Olufsen Beoplay Portal can connect at a 12meters distance via Bluetooth

Has A 3.5Mm Male Connector

Bang & Olufsen Beoplay Portal
KEF Mu7

Being an industry standard audio plug, a standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards. This means that it is commonly used in stereo headphones to your phone or connecting your phone to an external amplifier, sound bars, your car radio, etc. KEF Mu7 has this connector giving it a wider range of connectivity with most of the sound devices out there. All plugs have at least a tip and sleeve with the number of rings that stand as a differentiating factor.

Bang & Olufsen Beoplay Portal too have this kind of connector

Microphone

Number Of Microphones

Bang & Olufsen Beoplay Portal 4only
KEF Mu7 4only

KEF Mu7 have only 4 microphones, more microphones result in better sound quality and enable the device to filter out background noise.

The Bang & Olufsen Beoplay Portal microphones are only 4.

Has A Noise-Canceling Microphone

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 use a noise-canceling type of microphone, these microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.

The Bang & Olufsen Beoplay Portal too use a noise-canceling type of microphone.

Bang & Olufsen Beoplay Portal
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Extras

Has Ambient Sound Mode

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 support ambient sound mode, which uses microphones to pass through ambient noises so that they can still be heard. It’s useful when you want to listen to music but also be aware of what’s happening around you, for example when you’re having a jog but would still want to be able to hear traffic.

Has A Mute Function

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 have a mute function, they have an option to mute/unmute a conversation directly from the device. The mute function means that you unilaterally turn off the microphone, but you can still hear the other party's voice.

The Bang & Olufsen Beoplay Portal too have a mute function.

Multipoint Count

Bang & Olufsen Beoplay Portal 2only
KEF Mu7 2only

KEF Mu7 support multipoint, which allows you to link to more Bluetooth devices and switch between them. For example, you can easily switch calls from one device to another without having to manually disconnect and reconnect.

The Bang & Olufsen Beoplay Portal support multipoint count. Bluetooth multipoint would come in handy because you can be on one call without missing notifications coming from another device.

Control Panel Placed On A Device

Bang & Olufsen Beoplay Portal
KEF Mu7

There is a control panel on the KEF Mu7 body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.

The Bang & Olufsen Beoplay Portal too have a control panel on them.

Can Be Used As A Headset

Bang & Olufsen Beoplay Portal
KEF Mu7

KEF Mu7 can be used as a headset. A headset is one headphone or pair with a built-in microphone. Headsets can be used for apps that require communication i.e. Zoom, Google Meet, Skype, games with voice chat, mobile phones, etc.

Bang & Olufsen Beoplay Portal can be used as a headset. since they have a built-in microphone

Warranty Period

Bang & Olufsen Beoplay Portal 3years
KEF Mu7

The period of time that warrant free repair and adjustment services in case of a malfunction occurring under normal use that has followed instruction manuals. When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction. Bang & Olufsen Beoplay Portal have a warranty period of 3 years

Travel Bag Is Included

Bang & Olufsen Beoplay Portal
KEF Mu7

Carrying headphones without a case, or putting them in bags without a casing can easily put them at risk of getting damaged. The KEF Mu7 come with their own special case or pouch, which is useful for safe transportation.

Has Dolby Atmos

Bang & Olufsen Beoplay Portal
KEF Mu7

Dolby Atmos is a surround sound technology that allows sounds to be interpreted as three-dimensional objects. Bang & Olufsen Beoplay Portal have Dolby Atmos, which allows them to have immersive, 360-degree sound.

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