Home Headphones Kef Mu7 Vs. 1More Sonoflow

A Review By Comparison of the Kef Mu7 Vs. 1More Sonoflow

Last updated on Apr 13, 2023   9 minute read
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1More SonoFlow

1More SonoFlow

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Reasons why you might like the 1More SonoFlow

Overall Score 6.6 Represents average audio ecosystem compatibility score.

  • Weight of 250 g
  • Has Active Noise Cancellation (Anc)
  • Battery Life of 70 hours
  • Can Be Used Wirelessly
  • Has Ambient Sound Mode

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 1More SonoFlow KEF Mu7
DESIGN weight 250g 309g
has a detachable cable
ingress protection (ip) rating ipX5
can be folded
has a tangle free cable
sweat resistance
cable length 1.2meters
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 20,000hz 20,000hz
sound pressure level 96db/mw
driver unit size 40mm 40mm
impedance 32ohms 20ohms
has a neodymium magnet
POWER battery life 70hours 40hours
charge time 1.3hours 2hours
has a battery level indicator
battery power 720mah 100mah
has a rechargeable battery
CONNECTIVITY can be used wirelessly
bluetooth version v5 v5.1
has usb type-c
has ldac
has aptx hd
has bluetooth aptx
has aac
maximum bluetooth range 10meters 10meters
has a 3.5mm male connector
MICROPHONE number of microphones 5only 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
travel bag is included
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A breakdown of the review per specifications



1More SonoFlow 250g
KEF Mu7 309g

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 better for the reason that lighter devices are more comfortable to carry.

1More SonoFlow, at 250g are lighter than the KEF Mu7 by -59g

Has A Detachable Cable

1More SonoFlow

Detachable cables are cables that have connectors on both ends. One end goes into your headphone earpieces, 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, 1More SonoFlow too can use alternative cables and if the cable is pulled, it will pop out instead of breaking.

Ingress Protection (Ip) Rating

1More SonoFlow ipX5

Ingress protection ratings refer to the level of protection offered by an electrical enclosure, against solids and liquids. The letters 'IP' are followed by two numerals The first number of the IP rating refers to protection against solids say dust, while the second refers to protection against liquid.

Scoring IPX5, the 1More SonoFlow's rating is read as, the first value of X denotes that no data available to specify a protection rating, and the second number of 5 means that they can withstand medium pressure jet that's 6.3mm diameter, similar to garden hose from any angle for 3 minutes at a distance of 2.5 to 3 metres.

Can Be Folded

1More SonoFlow

1More SonoFlow are foldable, which makes them more portable. Foldable headphones are easier to transport and take up less storage space.

Has A Tangle Free Cable

1More SonoFlow

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.

1More SonoFlow too have a cable designed to help prevent tangles.

Sweat Resistance

1More SonoFlow

By sweat resistance we mean that the wireless earbuds are protected in the presence of low-pressure water jets at any angle, this is determined by the IP Rating of the earbuds. Based on the ingress protection rating of the 1More SonoFlow they do have sweat resistance

Cable Length

1More SonoFlow 1.2meters

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. 1More SonoFlow comes with a 1.2meters cable.

Has An Over-The-Ear Foam

1More SonoFlow

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.

1More SonoFlow with this design offer potential for maximum bass and loudness levels.

Has Stereo Speakers

1More SonoFlow

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

Both 1More SonoFlow and KEF Mu7 have stereo speakers

1More SonoFlow
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Sound Quality

Has Active Noise Cancellation (Anc)

1More SonoFlow

Active noise cancellation uses more advanced technology to actively counter noise. How it works, it listens to 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 0 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.

1More SonoFlow 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

1More SonoFlow

Passive Noise Cancellation uses well-designed ear cups to seal out environment 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 1More SonoFlow isolates you from ambient noise instead of actively using technology to cancel it out.

Lowest Frequency

1More SonoFlow 20hz
KEF Mu7 20hz

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.

1More SonoFlow's lowest frequency is at 20Hz, this implies that both devices produce equal bass

Highest Frequency

1More SonoFlow 20,000hz
KEF Mu7 20,000hz

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

1More SonoFlow's highest frequency is at 20,000Hz, this means that both devices produce equal treble

Sound Pressure Level

1More SonoFlow
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.

Driver Unit Size

1More SonoFlow 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.

1More SonoFlow driver unit is 40mm in diameter, making both 1More SonoFlow, and KEF Mu7 similar in how loud their sound gets , 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 yeah, larger drivers can generate louder sound, but this does not mean that they deliver better sound.


1More SonoFlow 32ohms
KEF Mu7 20ohms

Impedance is the device's resistance to the electromagnetic current, as electricity flows through a wire, it faces 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.

1More SonoFlow's impedance is 32Ohms. The impedance of earbuds is the electrical resistance of the driver unit present on the inside.

Has A Neodymium Magnet

1More SonoFlow

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.


Battery Life

1More SonoFlow 70hours
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

1More SonoFlow's battery life is 70 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

1More SonoFlow 1.3hours
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.

1More SonoFlow takes 1.3 hours to fully charge the battery

Has A Battery Level Indicator

1More SonoFlow

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.

1More SonoFlow 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.

Battery Power

1More SonoFlow 720mah
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.

1More SonoFlow's battery power is 720mAh.

Has A Rechargeable Battery

1More SonoFlow

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 1More SonoFlow too have a rechargeable battery.

1More SonoFlow
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Can Be Used Wirelessly

1More SonoFlow

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

The 1More SonoFlow also can be used wirelessly

Bluetooth Version

1More SonoFlow v5
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

1More SonoFlow has a Bluetooth version of v5. Newer versions provide faster data transfers.

Has Usb Type-C

1More SonoFlow

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.

1More SonoFlow too have USB TYPE-C

Has Ldac

1More SonoFlow

1More SonoFlow support LDAC, a codec developed by Sony which allows streaming high-resolution audio over Bluetooth connections at up to 990 kbps at 32 bit/96 kHz. It is capable of a very high bitrate of 990kbps, which provides high-resolution audio.

Has Aptx Hd

1More SonoFlow

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

1More SonoFlow

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.

Has Aac

1More SonoFlow

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 1More SonoFlow 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

1More SonoFlow 10meters
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 1More SonoFlow can connect at a 10meters distance via Bluetooth

Has A 3.5Mm Male Connector

1More SonoFlow

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.

1More SonoFlow too have this kind of connector


Number Of Microphones

1More SonoFlow 5only
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 1More SonoFlow microphones are only 5.

Has A Noise-Canceling Microphone

1More SonoFlow

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 1More SonoFlow too use a noise-canceling type of microphone.

1More SonoFlow
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Has Ambient Sound Mode

1More SonoFlow

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 1More SonoFlow support ambient sound mode as well allowing you to hear the ambient sound even while wearing them.

Has A Mute Function

1More SonoFlow

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 1More SonoFlow too have a mute function.

Multipoint Count

1More SonoFlow 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 1More SonoFlow 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

1More SonoFlow

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 1More SonoFlow too have a control panel on them.

Can Be Used As A Headset

1More SonoFlow

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.

1More SonoFlow can be used as a headset. since they have a built-in microphone

Travel Bag Is Included

1More SonoFlow

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.

1More SonoFlow too have a travel bag or case included.

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