Home Headphones Kef Mu7 Vs. Sennheiser Momentum 4 Wireless

A Review By Comparison of the Kef Mu7 Vs. Sennheiser Momentum 4 Wireless

Last updated on Apr 13, 2023   9 minute read
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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
VS
Sennheiser Momentum 4 Wireless

Sennheiser Momentum 4 Wireless

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Reasons why you might like the Sennheiser Momentum 4 Wireless

Overall Score 6.4 Represents average audio ecosystem compatibility score.

  • Weight of 293 g
  • Has Active Noise Cancellation (Anc)
  • Battery Life of 60 hours
  • Can Be Used Wirelessly
  • Has Ambient Sound Mode

A summary of the review by feature comparison

Category Features KEF Mu7 Sennheiser Momentum 4 Wireless
DESIGN weight 309g 293g
has a detachable cable
has a tangle free cable
has an over-the-ear foam
has stereo speakers
SOUND QUALITY has active noise cancellation (anc)
has passive noise reduction
lowest frequency 20hz 6hz
highest frequency 20,000hz 22,000hz
sound pressure level 96db/mw 106db/mw
driver unit size 40mm 42mm
impedance 20ohms 60ohms
has a neodymium magnet
POWER battery life 40hours 60hours
charge time 2hours 2hours
has a battery level indicator
has wireless charging
battery power 100mah 700mAhmah
has a rechargeable battery
CONNECTIVITY can be used wirelessly
bluetooth version v5.1 v5.2
has usb type-c
has aptx adaptive
has aptx hd
has bluetooth aptx
has aac
maximum bluetooth range 10meters 10meters
has a 3.5mm male connector
MICROPHONE number of microphones 4only 4only
has a noise-canceling microphone
highest mic frequency 10,000hz
lowest mic frequency 50hz
EXTRAS has ambient sound mode
has a mute function
multipoint count 2only
control panel placed on a device
can be used as a headset
travel bag is included
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A breakdown of the review per specifications

Design

Weight

KEF Mu7 309g
Sennheiser Momentum 4 Wireless 293g

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 consider a lower weight better because lighter devices are more comfortable to carry.

The Sennheiser Momentum 4 Wireless, at 293g weigh less than the KEF Mu7 by -16g

Has A Detachable Cable

KEF Mu7
Sennheiser Momentum 4 Wireless

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, Sennheiser Momentum 4 Wireless too can use alternative cables and if the cable is pulled, it will pop out instead of breaking.

Has A Tangle Free Cable

KEF Mu7
Sennheiser Momentum 4 Wireless

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 completely damaging your headphones.

Sennheiser Momentum 4 Wireless too have a cable designed to help prevent tangles.

Has An Over-The-Ear Foam

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

Sennheiser Momentum 4 Wireless with this design offer potential for maximum bass and loudness levels.

Has Stereo Speakers

KEF Mu7
Sennheiser Momentum 4 Wireless

KEF Mu7 have stereo speakers, what this means is that KEF Mu7's speakers deliver sound from independent channels on both left and right sides, this creates a richer sound and a better listening experience.

The Sennheiser Momentum 4 Wireless also have stereo speakers

KEF Mu7
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Sound Quality

Has Active Noise Cancellation (Anc)

KEF Mu7
Sennheiser Momentum 4 Wireless

Active noise cancellation uses more advanced technology to actively counter noise. How it works, it detects and analyzes the sound pattern of incoming noise 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 zero resulting in a reduced level of 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.

Sennheiser Momentum 4 Wireless 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

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

Lowest Frequency

KEF Mu7 20hz
Sennheiser Momentum 4 Wireless 6hz

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

Sennheiser Momentum 4 Wireless's lowest frequency is at 6Hz, this means that KEF Mu7 got a juicier bass than the Sennheiser Momentum 4 Wireless

Highest Frequency

KEF Mu7 20,000hz
Sennheiser Momentum 4 Wireless 22,000hz

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

Sennheiser Momentum 4 Wireless's highest frequency is at 22,000Hz, this means that Sennheiser Momentum 4 Wireless got a clearer and crispier treble than the KEF Mu7

Sound Pressure Level

KEF Mu7 96db/mw
Sennheiser Momentum 4 Wireless 106db/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.

Sennheiser Momentum 4 Wireless's sound pressure level measurement is 106dB/mW.

Driver Unit Size

KEF Mu7 40mm
Sennheiser Momentum 4 Wireless 42mm

The driver unit is basically a mini speaker 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.

Sennheiser Momentum 4 Wireless driver unit is 42mm in diameter, making them have a larger driver unit than that of KEF Mu7 by 2mm , as many tend to believe that driver units of a bigger size automatically produce better sound quality.

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

Impedance

KEF Mu7 20ohms
Sennheiser Momentum 4 Wireless 60ohms

Defined as the device's resistance to the electromagnetic current, when electricity flows through a wire, it faces electrical resistance that counters the flow of current. The resistance of a wire 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.

Sennheiser Momentum 4 Wireless's impedance is 60Ohms. The impedance of earbuds is the electrical resistance of the driver unit present on the inside.

Has A Neodymium Magnet

KEF Mu7
Sennheiser Momentum 4 Wireless

Neodymium magnets when 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.

Sennheiser Momentum 4 Wireless 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

KEF Mu7 40hours
Sennheiser Momentum 4 Wireless 60hours

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

Sennheiser Momentum 4 Wireless's battery life is 60 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

KEF Mu7 2hours
Sennheiser Momentum 4 Wireless 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.

Sennheiser Momentum 4 Wireless takes 2 hours to fully charge the battery

Has A Battery Level Indicator

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

Sennheiser Momentum 4 Wireless too have a battery level indicator, charging indicators allow you to determine the charging state of your headphones, whether fully charged, or the battery is running low.

Has Wireless Charging

KEF Mu7
Sennheiser Momentum 4 Wireless

Sennheiser Momentum 4 Wireless, the device supports a wireless charging standard such as Qi. To charge the device, you simply put it down on a compatible charging pad.

Battery Power

KEF Mu7 100mah
Sennheiser Momentum 4 Wireless 700mAhmah

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.

Sennheiser Momentum 4 Wireless's battery power is 700mAhmAh.

Has A Rechargeable Battery

KEF Mu7
Sennheiser Momentum 4 Wireless

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 Sennheiser Momentum 4 Wireless too have a rechargeable battery.

KEF Mu7
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Connectivity

Can Be Used Wirelessly

KEF Mu7
Sennheiser Momentum 4 Wireless

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

The Sennheiser Momentum 4 Wireless also can be used wirelessly

Bluetooth Version

KEF Mu7 v5.1
Sennheiser Momentum 4 Wireless v5.2

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

Sennheiser Momentum 4 Wireless has a Bluetooth version of v5.2. Newer versions provide faster data transfers.

Has Usb Type-C

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

Sennheiser Momentum 4 Wireless too have USB TYPE-C

Has Aptx Adaptive

KEF Mu7
Sennheiser Momentum 4 Wireless

Sennheiser Momentum 4 Wireless 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

KEF Mu7
Sennheiser Momentum 4 Wireless

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).

Has Bluetooth Aptx

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

Sennheiser Momentum 4 Wireless support APTX

Has Aac

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

The Sennheiser Momentum 4 Wireless support AAC as well. Designed to be the successor of the MP3 format, AAC generally achieves higher sound quality than MP3 encoders at the same bit rate.

Maximum Bluetooth Range

KEF Mu7 10meters
Sennheiser Momentum 4 Wireless 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 Sennheiser Momentum 4 Wireless can connect at a 10meters distance via Bluetooth

Has A 3.5Mm Male Connector

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

Microphone

Number Of Microphones

KEF Mu7 4only
Sennheiser Momentum 4 Wireless 4only

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

The Sennheiser Momentum 4 Wireless microphones are only 4.

Has A Noise-Canceling Microphone

KEF Mu7
Sennheiser Momentum 4 Wireless

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 Sennheiser Momentum 4 Wireless too use a noise-canceling type of microphone.

Highest Mic Frequency

KEF Mu7
Sennheiser Momentum 4 Wireless 10,000hz

The highest mic frequency of a microphone is defined as its upper limiting frequency. With today's microphones, you can reach a frequency high reaching up to 140 kHz. Sennheiser Momentum 4 Wireless's highest mic frequency is 10,000Hz, the highest frequency that the mic can pick up. Better for recording treble.

Lowest Mic Frequency

KEF Mu7
Sennheiser Momentum 4 Wireless 50hz

The lowest mic frequency of a microphone is defined as its lower limiting frequency. With today's microphones, you can have a frequency starting from around 1Hz. Sennheiser Momentum 4 Wireless's lowest mic frequency is 50Hz, the lowest frequency that the mic can pick up. Better for recording bass.

KEF Mu7
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Extras

Has Ambient Sound Mode

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

The Sennheiser Momentum 4 Wireless support ambient sound mode as well allowing you to hear the ambient sound even while wearing them.

Has A Mute Function

KEF Mu7
Sennheiser Momentum 4 Wireless

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 Sennheiser Momentum 4 Wireless too have a mute function.

Multipoint Count

KEF Mu7 2only
Sennheiser Momentum 4 Wireless

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.

Control Panel Placed On A Device

KEF Mu7
Sennheiser Momentum 4 Wireless

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 Sennheiser Momentum 4 Wireless too have a control panel on them.

Can Be Used As A Headset

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

Sennheiser Momentum 4 Wireless can be used as a headset. since they have a built-in microphone

Travel Bag Is Included

KEF Mu7
Sennheiser Momentum 4 Wireless

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.

Sennheiser Momentum 4 Wireless too have a travel bag or case included.

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