QuietComfort Ultra Earbuds Review

by Emma Baker, Senior Editor | Published February 15th, 2024 | Reviewed by Ted Wilson, Systems Engineer

The Bose QuietComfort Ultra Earbuds impress with their enhanced sound quality and top-tier noise cancellation, though they fall short in areas like multipoint Bluetooth and wireless charging.

In this review, I’ll explain the specifics of the QuietComfort Ultra Earbuds, from their immersive audio experience to their practical features, and discuss how they measure up in the competitive world of premium earbuds.

Continue reading to uncover the full capabilities and nuances of the Bose QuietComfort Ultra Earbuds.

Bose QuietComfort Ultra Earbuds

Design of the Earbuds

I recently tried the Bose QuietComfort Ultra Earbuds and was immediately struck by their unique ovoid-shaped nozzle. 

Unlike the typical cylindrical designs, this shape fits snugly in my ears without any discomfort. It’s perfect for someone like me who often struggles with the fit of traditional earbuds.

The silicone stabilizer wings are another standout feature. They’ve been redesigned with new grooves, making them easier to apply. 

During my morning jogs, these wings kept the earbuds securely in place, a relief given my past experiences with earbuds falling out mid-run. The included Fit Kit allowed me to further customize the fit for my specific ear size.

The QC Ultra Earbuds feature a new metallic treatment, giving them a premium feel that matches their high-end appearance. 

This design choice reflects a trend in consumer electronics where appearance is as important as functionality. The earbuds are not just a tech gadget; they’re a fashion statement.

The charging case is equally impressive. It’s compact yet functional, featuring a multifunction button, a USB-C port, and LED indicators that are easy to understand. 

Sound Profile of the QuietComfort Ultra Earbuds

The sound quality of these earbuds has improved from previous models, offering a richer audio experience. The call quality also sees an upgrade, with clearer voice transmission even in noisy environments.

The Bose QuietComfort Ultra Earbuds deliver a sound profile that’s rich in bass, making them ideal for genres like electronic music and hip-hop. Their enhanced bass response amplifies the depth and punch of music, providing an immersive listening experience.

In the mid-range, these earbuds impressively adhere to the target sound curve. However, there’s a slight dip in the mid to high-mid range. This means that in tracks with heavy bass, vocals and instruments might not be as prominent as they should be.

The treble accuracy of the earbuds is commendable. It’s balanced with a slight emphasis, ensuring that higher frequencies like cymbals are bright and clear. This results in vocals and instruments being detailed and lively (though more in the background than they should be), enhancing the overall clarity of the sound.

Bose’s Immersive Audio technology in these earbuds is designed to create a wider soundstage. It has two modes: ‘Still’ for when you’re not moving, and ‘Motion’ which uses head tracking to adjust the audio as you move. This technology can make the listening experience more dynamic and engaging, though it may occasionally have delays or inconsistencies during rapid head movements.

Controls for the Bose QuietComfort Ultra Earbuds

Control Function
Play/Pause Audio and Accept Calls Single tap on either earbud.
Skip to the Next Track and End Calls Double tap on either earbud.
Skip to the Previous Track Triple tap on either earbud.
Cycle Between ANC Modes Touch and hold on either earbud. Cycles between 'Quiet' (ANC on) and 'Aware' (talk-through mode).
Volume Control Swipe up on either earbud to raise the volume.
Swipe down on either earbud to lower the volume.
Custom Shortcut (User Control Preset) Long press on either earbud. Can be customized using the Bose Music app.

Connectivity - A Major Concern

One aspect that stands out, both in my usage and as noted in the reviews, is the lack of multipoint Bluetooth connectivity. This means I can’t connect the earbuds to multiple devices simultaneously. 

While this isn’t a deal-breaker for me, it’s a feature that could have added convenience, especially when switching between different devices, like a phone and a computer.

The earbuds support Google Fast Pair, which I found particularly useful with my Android phone. This feature allows for a seamless and quick pairing process, which has not been true for all earbuds. 

However, it’s worth noting that some users have reported occasional connectivity issues, such as unexpected disconnections. While I haven’t experienced this personally, it’s something potential buyers might want to consider.


The earbuds come with a charging case that provides an additional 18 hours of battery life, extending their usability significantly. The case’s USB-C charging is efficient, but the lack of wireless charging might be a downside for some users.

The earbuds offer around six hours of continuous playback, which is sufficient for my daily commute and a few hours of listening at work. 

However, I noticed that when using the Immersive Audio feature, the battery life takes a significant hit, dropping to about four hours. This is something to keep in mind for those who plan to use this feature extensively.

The charging case of the QuietComfort Ultra Earbuds is a lifesaver, providing an additional 18 hours of battery life. This means I can go several days without needing to recharge the case, which is incredibly convenient. 

The case itself charges via a USB-C port, but it’s worth noting that it doesn’t support wireless charging. This isn’t a major issue for me, but it might be for users who prefer the convenience of wireless charging.

After spending considerable time with the Bose QuietComfort Ultra Earbuds, I can confidently say that they are more than just a cosmetic upgrade.

The addition of Immersive Audio, although a bit inconsistent, adds a new dimension to the listening experience.

The sound quality is slightly improved, delivering a richer and more dynamic audio performance.

The call quality has also taken a step up, with clearer voice transmission even in noisy environments.

The noise cancellation remains top-notch, effectively muting the outside world and allowing for an immersive audio experience.

However, the lack of multipoint Bluetooth and wireless charging at this price point is a bit disappointing. Despite these minor drawbacks, the Bose QuietComfort Ultra Earbuds stand out as a premium offering in the market, suitable for those seeking high-quality sound, comfort, and effective noise cancellation.

While they may not warrant an immediate upgrade from their predecessors, they certainly set a high bar for what premium earbuds can offer.