Transform your daily commute and school life. Get a "new experience of silence and music" with the Bose QuietComfort Ultra Earbuds LE (2nd Generation)
The noise of a crowded train, the chatter in the office, the hustle and bustle of the city...
In your daily life, have you ever felt like you "want to focus more" or "want to immerse yourself in music"?
The solution to those worries is Bose's latest wireless earbuds, the "QuietComfort Ultra Earbuds LE (2nd Generation)."
In this article, we will thoroughly explain the appeal and usage of these earbuds in a way that is easy to understand even for beginners.
By the time you finish reading, you will surely think, "I want these."
*As of February 2026
Why the Bose QuietComfort Ultra Earbuds LE (2nd Generation) are being chosen now
Released in August 2025, the Bose QuietComfort Ultra Earbuds LE (2nd Generation) ranked 6th in Kakaku.com's best-selling rankings and has earned a high satisfaction rating of 4.64 (21 reviews).
The price is by no means cheap, but it is well worth it.
Dramatic evolution from the previous generation
The evolution from the 1st generation to the 2nd generation is not just a minor change.
Noise-canceling performance has significantly improved, especially in cutting out human voices, and in terms of sound quality, the clarity of mid-to-high ranges has improved, and the bass has become deeper.
And most importantly, the connection stability has finally become reliable.
The connection instability that was an issue in the previous model has been resolved, making them stress-free to use.
Comparison with competitors
Compared to competing products like the AirPods Pro 2 and Sony's WF-1000XM5, the Bose QuietComfort Ultra Earbuds LE (2nd Generation) are definitely superior in terms of sound quality.
In particular, the noise-canceling performance is at the strongest level currently available, to the point where you won't notice the surrounding sounds at all even when listening to music at a low volume on the train.
White noise has also been further reduced, achieving a zero-stress user experience.
An "immersive experience" created by overwhelming noise-canceling performance
Advanced noise-canceling powered by AI
The greatest appeal of the QuietComfort Ultra Earbuds LE (2nd Generation) is the latest AI-powered noise-canceling technology.
Sound insulation in the mid-to-high frequency range has been further improved compared to the previous model, making sounds that cause unconscious fatigue, such as human voices and ambient noise, almost completely disappear.
The moment you turn them on, you can experience the sensation of ambient noise fading into the background, as if the surrounding air has been blocked off by a thin film.
Effects in real-world usage scenarios
Even on a crowded commuter train, you can immerse yourself in silence comparable to first class.
While working in a cafe, you won't be bothered by surrounding conversations, which will dramatically improve your concentration.
For those who are bothered by family noise while working from home, these earbuds will be a partner that significantly boosts your work efficiency.
They effectively cut out not only low-frequency noise like train running sounds and the low hum of air conditioners, but also human voices, which were a challenge in the previous model.
Combination with ActiveSense technology
In addition to noise canceling, ActiveSense technology is also included.
This technology makes it possible to cut out only unnecessary noise while appropriately letting in necessary environmental sounds.
This feature is extremely convenient when you want to enjoy music while ensuring your safety in public areas.
By selecting "Aware" mode, you can have conversations without taking off the earbuds, making interactions at convenience store registers or quick chats in the office smooth.
Art in the name of "sound quality." The essence of BOSE sound
Sound quality raised to the next level
In terms of sound quality, it is rated as having clearly moved up a level from the previous model.
You can clearly hear the difference, especially when listening to delicate tracks like those by Vaundy.
The soundstage is wide and immersive, characterized by a sense of space that seems to expand gently.
The sound localization is somewhat soft, but that actually creates a more natural listening experience.
Clarity in mid-to-high frequencies and power in the bass
Compared to the previous model, the mid-to-high ranges are clearer, making it easier to feel the contours of every single note.
The vocals have less distortion, allowing the singing voice to reach your ears clearly.
At the same time, the powerful bass characteristic of Bose remains intact.
While the bass has plenty of volume, it does not swell excessively, giving the impression that the bassline sinks in with well-defined contours.
The catchphrase of powerful deep bass is by no means an exaggeration, and it demonstrates its true value even in bass-heavy tracks such as rock, EDM, and hip-hop.
Experience spatial audio with Immersive Audio
The QuietComfort Ultra Earbuds LE (2nd Generation) are equipped with the Bose Immersive Audio feature.
This feature enables a three-dimensional acoustic experience, as if you were in a concert hall or a live venue.
The richness of spatial expression is a unique feature of the Ultra generation, providing a new dimension of listening experience where you don't just "listen" to music, but "experience" it.
The sense of presence is also on a different level when watching movies or dramas.
A design philosophy that balances ease of use and functionality
Up to 6 hours of continuous playback and fast charging
The battery life allows for up to 6 hours of continuous playback.
When used with the charging case, you can enjoy even longer usage.
It also supports fast charging, allowing for several hours of use with just a short charge, providing peace of mind on busy mornings.
You can enjoy music without worrying about the battery running out during your daily commute or on long flights.
IPX4-rated water resistance
With IPX4-rated water resistance, it can handle sweat and light rain.
You can use them with confidence even while jogging or training at the gym.
Even if you get caught in a sudden rain shower, there is no need to rush to put your earphones away.
From daily use to exercise, they are useful in a wide range of situations.
Stable Bluetooth connectivity
The connection stability, which was an issue in the previous model, has been dramatically improved in the 2nd generation.
There is almost no need to worry about music cutting out or only one side being audible.
Even in the crowds of the rush hour commute, they maintain a stable connection.
The assessment that they have finally reached a "decent" level as Bluetooth wireless earphones is highly regarded even by long-time Bose users.
Freely customizable with the dedicated app
Using the dedicated Bose app, you can perform detailed customizations such as equalizer settings and noise-canceling level adjustments.
In the 2nd generation, the range of app customization has expanded, allowing you to save your preferred sound quality and noise-canceling settings.
With an interface that even beginners can operate intuitively, you can enjoy them sufficiently just by choosing from the presets.
Advanced users can create their own ultimate sound through fine-tuning.
Safe for beginners. How to use the QuietComfort Ultra Earbuds LE (2nd Generation)
Initial setup steps
Even if you are using wireless earphones for the first time, you can easily set up the QuietComfort Ultra Earbuds LE (2nd Generation).
First, take the earphones out of the charging case.
They will automatically enter pairing mode, so just select "Bose QuietComfort Ultra Earbuds LE" from your smartphone's Bluetooth settings screen.
Once paired, they will connect automatically the next time you take them out of the charging case.
Tips for wearing
Proper fit affects both noise-canceling performance and sound quality.
The included ear tips come in three sizes, so choose the one that fits your ears.
Once you put the earbuds in your ears, rotate them slightly to check the fit.
The dedicated app also includes an eartip fit test feature, allowing you to check if they are worn correctly.
The comfort is rated 5.0 out of 5.0, and the design is comfortable even for long periods of use.
Basic operation methods
By touching the earbuds, you can play/pause music, skip tracks forward/backward, adjust volume, and switch noise-canceling modes.
When you receive a call, you can answer it simply by tapping the earbuds.
They also support voice assistants (Siri and Google Assistant), allowing for hands-free operation.
Until you get used to them, it is a good idea to customize the controls or check the instructions in the dedicated app.
Maintenance and storage methods
Proper maintenance is important to ensure long-term use.
After use, wipe off sweat and dirt with a soft cloth.
You can keep the eartips hygienic by removing and washing them with water periodically.
Wipe the charging case occasionally and be careful not to let dust accumulate on the charging terminals.
When storing, we recommend keeping them in the charging case and avoiding hot and humid places.
The joy of ownership, showcased by Desert Gold
Color variations and luxury
The QuietComfort Ultra Earbuds LE (2nd Generation) are available in classic colors like Black and White, as well as a special color called Desert Gold.
Desert Gold gives an elegant and sophisticated impression, making it attractive as a fashion item as well.
Not only the earbuds themselves but also the charging case are unified with matching colors, exuding a sense of luxury.
The design that makes you feel the joy of ownership is a hallmark of Bose's dedication.
Portability and Case Design
The charging case is compact and easy to carry, fitting into pockets or bags without being bulky.
The charging case is interchangeable with the previous QuietComfort Earbuds II, making it a familiar design for those who already own the previous model.
The matte texture and rounded form feel good to the touch when held in the hand.
It is finished with an endearing design that makes you want to carry it with you every day.
Knowing the differences from other Bose models
Comparison with QuietComfort Earbuds II
The QuietComfort Earbuds II is a model released in 2022, two generations before the 2nd generation.
In the 2nd generation, the reduction of white noise and the improvement of high-frequency ranges are major evolutionary points.
The QuietComfort Earbuds II focused on bass and lacked extension in the high range, but the 2nd generation has increased transparency and more balanced sound quality.
Also, the "hissing" white noise that was noticeable in quiet environments has been significantly improved.
Differences from QuietComfort Ultra Earbuds (1st Generation)
The main differences between the 1st generation QuietComfort Ultra Earbuds and the 2nd generation are support for wireless charging, the addition of AI-powered noise canceling, the addition of a cinema mode to spatial audio, and a wider range of app customization.
While they look almost the same, the internal performance has steadily improved.
The price is the same for both models at 39,600 yen, but considering the new features, the 2nd generation is well worth choosing.
Positioning within the QC Earbuds series
In 2024, a more affordable "QC Earbuds" model was also released.
This model is priced at approximately 36,000 yen and follows the characteristics of the flagship QuietComfort Ultra Earbuds while omitting some features.
It does not include Bose Immersive Audio or custom modes, and the selectable sound quality modes are simplified to three types.
It is an option for those who want to keep their budget down or are satisfied with simple functions, but if you are looking for the best experience, the QuietComfort Ultra Earbuds LE (2nd Generation) is recommended.
Who we recommend the QuietComfort Ultra Earbuds LE (2nd Generation) for
Those seeking silence during their commute
For those who want to create a quiet environment in crowded trains or noisy buses every day, these earbuds are a must-have.
With powerful noise-canceling technology, your travel time transforms into a comfortable, personal experience.
Even without listening to music, the noise-canceling feature alone can shut out surrounding noise, making it perfect for reading or taking a nap.
Those who are serious about their music
The immersive experience provided by high-quality sound and spatial audio is more than enough to satisfy any music lover.
Whether it's rock, jazz, classical, or EDM, you can savor the true essence of Bose sound in any genre of music.
This is a model we can definitely recommend to those considering switching from AirPods Pro 2 or the Sony WF-1000XM5.
Those who want to increase their focus while working from home or teleworking
For those bothered by family noise or outside sounds while working at home, the QuietComfort Ultra Earbuds LE (2nd Generation) will significantly boost your concentration.
High-quality microphone performance also allows for clear voice calls during online meetings.
The design is comfortable even when worn for long periods, making it easy to use throughout a full workday.
Those who want to use them actively at the gym or while running
With IPX4-rated water resistance, you can use them with peace of mind even during sweaty workouts.
Exercising to the rhythm of your music will also boost your motivation.
The fit is excellent, and they are designed to stay in place even during intense movement.
As a workout companion, these earbuds will be your best partner.
Search intent and latent needs of the target reader
If you are reading this article, you likely have the following search intent or latent needs.
Explicit needs:
I want to know the detailed specs and features of the Bose QuietComfort Ultra Earbuds LE (2nd Generation)
I want to understand the differences from other models and decide which one to choose
I want to check actual usage and reviews before considering a purchase
I am worried about whether a beginner can use them effectively and want to know how to use them
Latent needs:
I want to be freed from the stress of daily noise
I want to enjoy music with even higher sound quality
I want to spend my commute time meaningfully
I want to increase my concentration and boost my work productivity
I want a high-quality gadget that gives me the joy of ownership
In this article, we have comprehensively provided information based on product features, usage, comparisons with other models, and actual user reviews to meet these needs.
The Bose QuietComfort Ultra Earbuds LE (2nd Generation) has the power to change your daily life.
You can obtain silence even on a crowded train, immerse yourself completely in music, and focus on work or study.
These earphones make such an ideal environment a reality.
The price is by no means cheap, but because it is something you use every day, you want to choose the best without compromise.
The Bose QuietComfort Ultra Earbuds LE (2nd Generation) will dramatically change your music experience and your daily life.
Why not take this opportunity to get your hands on them?
