Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
Product Strengths
- Superb sound quality, detailed, balanced, and pleasing for long listening sessions
- Excellent design and build quality, featuring premium materials and a comfortable fit
- Very effective Active Noise Cancelling (ANC) at blocking out external distractions
- Substantial battery life, offering up to 40 hours of playback, with a quick charge feature providing 8 hours of playtime with a 15-minute charge
- Intuitive touch controls, combined with physical buttons, make for easy operation
Product Considerations
- Some reviewers feel the bass could be more impactful, and the top end could be too much for some
- No transparency mode, which is a strange omission for telephone calls
- The carry case is quite large, making it less convenient for travel
- Some reviewers found the clamping force a little strong
- The leatherette earpads raised concerns about durability
Comparisons (according to reviewers)
- Mu7 sound is considered more hifi-like than the Sony XM5, while the XM5 has a more 'consumer ready' sound with more volume, and the XM5 noise cancelling is slightly better
Takeaway: The KEF Mu7 headphones deliver excellent sound quality in a stylish and comfortable design, making them a great option for anyone wanting to enjoy music without distractions. They are easy to use and offer long-lasting battery life, so one can listen all day.
All
Mu7
reviews

Manufacturer details
- Model: Mu7
- Speaker Drivers: 40mm
- Max Power Output: 15mW
- Bluetooth: 5.1
- Codec: SBC, AAC, aptX, aptX HD
- Bluetooth Power Class: 2
- Bluetooth Range: 10m
- Bluetooth Frequency: 2.402GHz - 2.48GHz
- Li-ion Rechargeable Battery: 1100mAh
- Battery Play Time: 40 hrs (BT + ANC on)
- Fast Charging for 15 mins: 8 hrs battery play time
- Dimension (H x W x D): 199 x 153 x 89mm
- Weight: 309g
- Operating Temperature: -10°C to 45°C
- Power Input: DC 5V 900mA
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- KEF's designs prioritize a "Single Apparent Source" through coaxial driver technology, aiming for a coherent soundstage where frequencies appear to originate from a single point, enhancing realism and spatial accuracy.
- The brand incorporates "Metamaterial Absorption Technology (MAT)" into its drivers, utilizing a maze-like structure to absorb unwanted sound waves from the rear of the driver, resulting in cleaner and more defined output.
- They offer a wide range of streaming and connectivity options, with their powered loudspeakers responding to the proprietary KEF Connect app, which delivers multiple streaming services and facilitates setup and customization.
- KEF frequently collaborates with renowned industrial designers to create visually striking products that seamlessly blend into modern living spaces, balancing aesthetic appeal with acoustic performance.
Select products
T Series
- Positioning: The ultra-slim speaker line, designed to complement modern flat-screen TVs with a minimal footprint.
- Description: While delivering a sleek aesthetic, the flat diaphragm driver maintains rigidity and minimizes resonance, providing clean and accurate sound. However, compared to other KEF lines like the Q or R Series, it may offer less depth in bass response due to its slim design.
Q Series
- Positioning: The entry-level range offers versatile speakers suitable for both stereo and home theater setups.
- Description: Features Metamaterial Absorption Technology (MAT) and the 12th generation Uni-Q driver array, delivering detailed and natural sound. While it provides excellent value, it lacks some of the advanced damping and driver technologies found in the higher-end R and Reference Series, which offer more refined sound reproduction.
R Series
- Positioning: Bridges the gap between the entry-level Q Series and the high-end Reference Series, incorporating technologies from the latter to enhance performance.
- Description: Equipped with Metamaterial Absorption Technology (MAT) and the 12th generation Uni-Q driver array, delivers precise and immersive sound. Unlike the Q Series, it includes Shadow Flare technology to reduce cabinet diffraction, resulting in clearer high frequencies.
The Reference
- Positioning: As KEF's high-end line, sets the benchmark for audiophile-grade sound reproduction.
- Description: Incorporating Metamaterial Absorption Technology (MAT) and a 12th generation Uni-Q driver array, offers exceptional clarity and detail. It also features advanced cabinet construction and flexible port technology for cleaner bass compared to the R Series. However, it doesn't achieve the Single Apparent Source configuration found in the Blade Series, which provides even more precise imaging.
Blade Series
- Positioning: Represents KEF's innovative approach to speaker design, featuring the world's first Single Apparent Source loudspeakers.
- Description: With Metamaterial Absorption Technology (MAT) and the 12th generation Uni-Q driver array, delivers coherent and precise sound. Its unique cabinet design minimizes resonances and diffraction, surpassing the traditional enclosures of The Reference Series.
MUON
- Positioning: Stands as KEF's flagship speaker, combining cutting-edge acoustic engineering with avant-garde industrial design.
- Description: Crafted from super-formed aluminum, the rigid structure minimizes vibrations, delivering ultra-wide bandwidth and immersive sound. While it shares the Uni-Q driver array with other KEF models, its exclusive design and limited production make it a collector's item.
Our take on the brand
Look inside the brand
Our interview with the brand
What are two key technological innovations or strong opinions that differ you from other brands?
What's your approach to customer support?
What are your favorite tracks for showcasing the strength of your products?
What other products pair best with yours?
Used
KEF
What if you spend more?
Product Strengths
- Premium build quality and materials with luxurious Nappa leather detailing and a cast aluminum yoke
- Comfortable for long listening sessions with soft earcups and a headband that provides even pressure distribution
- Excellent sound quality with 40mm carbon cone drivers delivering ultra-fast response, low distortion, and a clean, smooth sound signature
- Effective active noise cancellation (ANC) reduces low-frequency sounds and midrange chatter, with the Nappa leather providing a tighter seal
- Realistic soundstage scale with tight, well-defined imaging, with the sound feeling more live and in front of the listener
Product Considerations
- Multipoint pairing is not always seamless, and there might be occasional wind noise from the earcup due to software glitches, with wear detection being inconsistent and inaccurate
- Limited app customization with only bass and treble adjustments, lacking a fully customizable EQ
- Microphone pickup is good in quiet environments, but can be affected by heavy noise gating in noisy conditions, causing voice fade-in/out
- Some emphasis on bass response, which may not appeal to everyone
- There is concern about the Nappa leather being easily scratched
Comparisons (according to reviewers)
- Compared to the PX7 S2, the PX8 offers better sound quality with greater instrument separation and realism due to the carbon fiber drivers, and also features more premium materials
- While the PX8 active noise cancelling does well, Sony still has better mic pickup
- The PX8 provides a good alternative to the Airpods Max
- The PX8 stacks up among some of the best wireless headphones along with the Focal Bathys
Takeaway: The Px8 is a premium wireless headphone with outstanding build quality and sound performance, which is perfect for audiophiles seeking a luxurious listening experience. It combines comfort, effective noise cancellation, and detailed audio reproduction, making it a worthwhile investment for those prioritizing sound quality and high-end materials.
Video review
Our take on the brand
Lose yourself in your music with the first-ever headphones from Mark Levinson, a pioneer in high-fidelity audio for the past 50 years. Reference-quality sound meets luxurious comfort in a lightweight and durable set of headphones featuring Adaptive Active Noise Cancellation (ANC) that’s perfect for travel. Reveal the hidden details in your music – at home, on the go, or anywhere you find a moment to listen.
Our summary
Product Strengths
- Excellent sound quality with a balanced and refined signature, detailed mids, and smooth treble
- Effective active noise cancellation (ANC) and ambient aware mode
- Premium build quality with high-quality materials such as leather, anodized aluminum, and metallic paint
- Comfortable for long listening sessions due to soft leather ear cushions and a well-designed headband
- Comprehensive codec support (LDAC, aptX Adaptive, AAC) for high-resolution wireless audio
Product Considerations
- High price point, making them inaccessible for many consumers
- App is lacking in some features, such as fully customizable EQ and customizable ANC modes
- On-cup controls are described as basic and not very intuitive to use
- Some reviewers feel the design does not fully convey a sense of luxury for the price
- Occasional reports of issues with the 'on-head detection' feature—causing connection problems
Comparisons (according to reviewers)
- Vs Focal Bathys: The Mark Levinson 5909 offers a cleaner and more natural tonality with a smoother, more consistent, and detailed treble response than the Focal Bathys
- Vs Apple AirPods Max: The Mark Levinson 5909 offers better sound quality, particularly in the bass frequencies, and is more comfortable than the AirPods Max
- Vs Bowers & Wilkins PX8: The Mark Levinson 5909 measures better in audio quality
Takeaway: The Mark Levinson № 5909 headphones offer excellent sound, comfort, and noise cancellation, making them a top-tier choice for those seeking a premium listening experience. With their high-end sound quality and comprehensive feature set, these headphones are a great option for audiophiles wanting the best wireless experience.
Video review
Our take on the brand
Premium DALI IO-8 wireless Hi-Fi headphones with custom DALI driver technology bring you genuine Hi-Fi performance, while advanced audiophile active noise cancellation technology lets you enjoy the same genuine sound, wherever your are.True Hi-Fi PerformanceDALI IO-8 headphones are designed and engineered using the same sound principles as our full-size loudspeakers – they're true Hi-Fi speakers for your head.Audiophile Active Noise CancellationSilence the outside world with unique active noise cancellation technology tuned carefully by DALI to strip away the distractions without impairing the sound.35-Hour Battery LifeEnjoy up to 35 hours of peerless noise-cancelling playback.Dual Sound ModesTailor the performance to your own style with 'Hi-Fi' and 'Bass' sound modes.
Product Strengths
- Positive, detailed, and convincing sound makes music enjoyable, rather than academic
- Exceptional build quality with premium materials, including brushed metal and tactile fabric, gives them an understatedly good look and feel
- Can function as hard-wired passive headphones without battery power, offering flexibility and continuous use
- Active noise cancellation (ANC) effectively reduces external noise without significantly impacting the sonic characteristics of the headphones
- Balanced frequency response with smooth transitions and ample detail throughout the range
Product Considerations
- The lack of a control app limits user customization options
- The use of real leather in the earpads may not appeal to vegan customers
- Active noise cancellation (ANC) is decent, but not class-leading compared to brands like Bose
- The midrange can be a bit too relaxed for some users
Comparisons (according to reviewers)
- Compared to Bowers & Wilkins PX8, the Dali IO-8 offers distinct sound
- Compared to Sennheiser Momentum 4, the Dali IO-8 is heavier
- Compared to Focal Bathys, the Dali IO-8 is lighter
Takeaway: The Dali IO-8 is a premium headphone that delivers high-quality sound with a focus on musicality and build quality. It's a great choice for listeners who value a balanced sound signature, comfortable design, and the flexibility of wired and wireless use.
Video review
Our take on the brand
Product Strengths
- Excellent sound quality delivers a rich, full, detailed, and clear experience, rivaling higher-end wired headphones
- Comfortable for long listening sessions due to soft earpads and good weight distribution
- High-quality build with premium materials like magnesium yokes, aluminum band, and leather padding
- Effective noise canceling is comparable to leading brands like Bose and Sony, and offers a transparency mode
- Versatile connectivity with Bluetooth (aptX Adaptive), USB-DAC mode (up to 24/192), and analog 3.5mm
Product Considerations
- Active noise canceling (ANC) isn't the absolute best on the market
- Stock cables are considered basic and somewhat short
- The app, while offering EQ and other adjustments, can be clunky and difficult to connect initially, and some users have reported firmware update issues
- The headphones always need battery power to function, even when using a wired connection
- Some reviewers found the bass a little too elevated in the lower mids
Comparisons (according to reviewers)
- The Bathys has a more natural fit, a better mic, more connectivity options, and a companion app that allows for better sound adjustments, while the AirPods Max excels in noise canceling
- The Bathys has more consistent audio delivery, a more robust EQ, and better overall noise isolation, while the Bowers & Wilkins Px8 is more comfortable and better built
- The Bathys has similar noise isolation performance and similar USB-C and analog capabilities, but the Sennheiser Momentum 4 Wireless has a more accurate treble response and better battery life
- The Bathys has better sound, is more comfortable, and is better built than the Sony WH-1000XM5, while the XM5 has better battery and better noise isolation
- The Focal Celestee is better built, more comfortable, and wired, while the Bathys has a USB-DAC mode for higher-quality audio and a companion app to adjust it
Takeaway: The Focal Bathys are a solid pick for wireless headphones that sound great and feel luxurious. Excellent sound quality with convenient features like active noise canceling make them perfect for enjoying music on the go.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- High-end design with premium materials (cloth and aluminum construction, aluminum accent rings, soft faux leather, stitch-free Nappa leather) gives a luxury vehicle feel and understated style
- Comfortable for longer periods thanks to the redesigned form and shape, upgraded pressure-relieving memory foam, oblong earcups for better pressure distribution, and ample room inside the earcups
- Superior sound quality is due to the revised custom 40mm Bowers & Wilkins driver with lower distortion biocellulose diaphragm and 20mm voice coil, carefully positioned and angled inside the earcups
- Integration with the Bowers & Wilkins Music app allows customization of noise canceling levels, ambient pass-through, and EQ tone control
- Improved clarity of voice on phone calls is due to the redesigned microphone pattern
- USB-C socket is the sole input option, though adapters are included
Product Considerations
- Some users may find the wear detection feature too sensitive
- The app offers fewer features than some other headphone apps
- The included cables are somewhat short
Comparisons (according to reviewers)
- Compared to the previous PX7, the S2 has a completely different design, is smaller and easier to carry, and has significant technical improvements
- The PX7 S2 offers a more balanced sound than mainstream offerings by Sony or Bose, which tend to exaggerate mid-bass
- The Bowers & Wilkins Px7 S2 stood out with a more distinguished appearance, a next-level build with nicer tactility, and sound quality is a toss-up—dependent on listening preference
Takeaway: The Bowers & Wilkins Px7 S2 headphones offer a great listening experience with excellent sound quality, beautiful design, and a comfortable fit. They are a solid choice for anyone who wants an upgrade over basic headphones and cares about both style and sound.
Video review
Our take on the brand
Our Summary
Product Strengths
- Excellent sound quality with clarity and detail
- The charging case doubles as a wireless transmitter, connecting to non-Bluetooth devices via USB or 3.5mm jack
- Improved Bluetooth connectivity and an extended range of up to 25 meters compared to the original PI7
- Premium design and comfortable to wear for longer durations
- Excellent bass response
Product Considerations
- The B&W app lacks EQ customization options
- Transparency mode has noticeable hiss and is not easily accessible via the earbuds, requiring the app to activate
- Noise cancellation is good, but not class-leading compared to some competitors
- Some reviewers find them bulky and not very comfortable for prolonged use
- No multi-point pairing
Takeaway: The Bowers & Wilkins Pi7 S2 is a great choice for those who prioritize exceptional sound quality and appreciate the unique wireless transmitter feature. It provides an immersive and detailed listening experience.
Video review
Our take on the brand
Our Summary
Product Strengths
- Superior sound separation compared to older models, noticeable even to non-audiophiles
- The mobile app enhances usability by allowing users to adjust bass, treble, and noise reduction levels
- Comfortable fit with ample cushioning and a design that's comfortable to wear around the neck
- Premium build quality with attention to detail in design, materials, and hinge smoothness
- The sound is balanced, with distinct highs and bass that booms without overpowering the mix
Product Considerations
- Noise cancellation does not quite match up to Sony, with a small gap forming depending on head position
- Volume up and down buttons take time getting used to, with accidental pausing occurring
- The touch-sensitive earcup feature for pass-through audio from Sony is missed
- Lacks an adapter for airplane screens
- Some reviewers found the earcup size a bit awkward
Comparisons (according to reviewers)
- Vs Sony WH-1000XM3: Px7 S2e offers superior sound separation
- Vs Apple AirPods Max: PX7 S2e is closer to the sound quality of the AirPods Max than the Beats Studio Pro, but the AirPods Max is heavier and less comfortable for long-term use
- Vs Sony WH-1000XM5: Px7 S2e has better sound quality, though the Sony has better ANC
- Vs Bowers & Wilkins Px8: Px7 S2e is very close in sound quality for a much better price
- Vs Sennheiser Momentum 4 Wireless: Px7 S2e has better midrange magic for music
- Vs Bose Quiet Comfort Ultra: Px7 S2e balances ANC and music playback better
Takeaway: The Px7 S2e headphones are a premium product that balances sound quality, comfort, and build. Great sound and a luxurious feel could make these headphones a perfect fit.
Video review
Our take on the brand
Our Summary
Product Strengths
- Outstanding battery life—offering up to 60 hours with ANC on and 100 hours with ANC off
- Clean, open, reasonably detailed, energetic, informative, and convincing sound quality, with a balanced and neutral tonality
- Classy design, with a pleasing, sturdy build with robust metal elements, and comfortable for long listening sessions
- Features a user-replaceable battery and earpads, promoting longevity
Product Considerations
- Active noise cancellation (ANC) isn't class-leading and can be bettered, and can have small glitches during use
- Noise-canceling can produce a faint static sound when no audio is playing, and a popping noise with movement
- Some reviews mention limited range in the EQ settings within the Melomania Connect app
- Some reviews mention occasional software bugs and connectivity issues with devices
- Do not fold away, and come with a travel case that may be too large for some users
Takeaway: The Cambridge Audio Melomania P100 headphones are a solid choice for anyone wanting great sound and very long battery life at a good price. They have a nice design and are built to last, making them a good value overall.
Video review
Our take on the brand
Our Summary
Product Strengths
- Polished, almost studio-like audio quality with big bass
- Has multipoint connectivity and lossless codecs
- Very long battery life, up to 50 hours with ANC on
- Exciting listen along with on-the-go features
Product Considerations
- Ear pads are hard to remove
- Touchpad for controls is a bit finicky and has inconsistent sensitivity
- Clamping force is a bit strong, so stretching may be needed
- The high end is also a little hyped, adding to the clarity
- Although the bass bloats into the lower-mids, the rest of the midrange is nicely tuned
Comparisons (according to reviewers)
- Vs Bowers & Wilkins Px7 S2e: The Aventho 300 brings studio sensibilities to its soundstage, while the Px7 aims for accurate linearity
- Vs Beyerdynamic DT 700 Pro X and DT 900 Pro X headphones: Using the same drivers as the company's studio-oriented DT 700 Pro X and DT 900 Pro X, the sound quality will make one feel like they have taken a blanket off their music, especially when upgrading from a cheaper model
- Vs Sennheiser Momentum 4 Wireless: They are only beaten by the Sennheiser Momentum 4 and the Marshall Monitor III
Takeaway: The Beyerdynamic Aventho 300 sound polished and are meant for the studio, but they still have a large bass response. For those seeking something different without sacrificing quality, these headphones offer a compelling combination of sound quality and features.
Video review
Our take on the brand
How to buy
Headphones
Search all hifi products
Explore our database of 10,000+ new and 25,000+ used hifi products.












































































