Bose QuietComfort Ultra Headphones (2nd Generation) - Black
Travel and office buyers have a supported reason to prioritize this model's comfort, ANC and USB-C listening. The 30-hour figure is a manufacturer rating with Immersive Audio off, falling to 23 hours with it on; AUX needs power and disables earcup microphone pickup. Try fit and confirm the source device, and investigate battery service if long ownership matters.
Updated 2026-10-08
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Conditions and limitations
Runtime depends on Immersive Audio
- Capability
- Manufacturer-rated playback with ANC enabled.
- Limitations
- Up to 30 hours with Immersive Audio off; up to 23 hours with it on.
- Runtime is rated, not independently measured in this revision.
- Requirements
- Use the mode corresponding to the quoted runtime.
Compatibility
Powered AUX playback
- Connection
- Use the AUX audio cable with the headphones powered on.
- Functions
- Audio playback
- Notes
- Bluetooth and earcup microphone voice pickup are disabled on this documented AUX path.
- Protocol
- Analog audio
- Result
- partial
- Source device
- Source device with analog audio output
- Target device
- Bose QuietComfort Ultra Headphones (2nd Gen)
Where sources differ
One independent weighing is stored, with undisclosed scale and accessory conditions. Other readable weight figures lack permitted native receipts, so no controlled cross-source discrepancy is resolved.
Reported issues and fixes
Sources were checked, but a firmware-specific defect and verified fix history were not established from permitted primary snapshots. No defect-free claim is made.
Care and support
Professional battery service
- Details
- Battery removal is reserved for qualified professionals; owner replacement is not supported by the cited evidence.
Ownership costs
Professional battery service affects long ownership. No monetary ownership-cost calculation is made because service charges and replacement schedule are not established and prices are excluded from this task.
Who it suits
Comfort-focused travel and desk listening
- Check before buying
- Try the fit for the intended listening duration.
- Confirm the desired source device and calling connection.
- Check local battery service options.
- Constraints
- Can recharge between longer sessions.
- Needs
- Comfortable extended listening with noise reduction.
- A documented USB-C listening option.
- Reason
- The evidence supports comfort and noise-cancelled listening, but charging, source compatibility and serviceability must match the buyer's routine.
- Tradeoffs
- AUX requires power and disables earcup microphone pickup.
- Battery replacement needs professional service.
- Assessment
- conditional
Reviewer consensus
Consensus rows require at least two distinct sources for the topic.
| Topic | Positive | Negative | Mixed | Reading | Evidence |
|---|---|---|---|---|---|
| Comfort & usability | 2 | 0 | 0 | Agreed · 2/2 | [6], [1] |
| Connectivity and codec support | 1 | 0 | 1 | Mixed · 1/2 | [3], [4] |
| Frequency response | 1 | 0 | 1 | Mixed · 1/2 | [3], [2] |
| Limitations | 0 | 2 | 0 | Weak point · 2/2 | [2], [1] |
| Repairability | 1 | 2 | 0 | Debated · 1 v 2 | [5], [1], [4] |
Single-source notes
The review
Bose QuietComfort Ultra second generation: sound, ANC, and ownership
Sound and noise reduction
The Bose QuietComfort Ultra Headphones second generation suit listeners who want a warm, bass-forward presentation together with active noise cancellation. Audiowords summarizes the stock sound as mildly V-shaped, while the written Headphones.com assessment describes a more strongly emphasized bass and treble balance. Those descriptions represent listening judgments rather than a universal frequency-response measurement for every wearer. CustomTune uses a calibration stimulus when the headphones power on and applies personalized equalization. Consequently, the experience depends partly on fit and calibration, and a buyer should listen with the headphones properly seated before judging the tonal balance. Someone who enjoys a full low end may accept the stock sound immediately; a listener who wants a less prominent bass balance should try the available equalizer. This is a practical preference check, not evidence that one setting reproduces every recording more accurately. [3], [2]
Noise cancellation is one of the strongest reasons to consider this model for travel and office listening. The inherited editorial evidence places its noise reduction among the leading options, but that assessment should not be mistaken for a measured attenuation value in decibels. This revision retains that distinction: ANC availability and favorable review judgments are supported, while no new laboratory noise-reduction number is asserted. Sound customization also has a clear boundary. Headphones.com describes the Bose equalizer as simple three-band shelves, so it offers broad tonal adjustments rather than the precise control of a full parametric equalizer. Buyers who enjoy extensive tuning should assess that limitation before committing. For someone who primarily wants comfortable listening with less environmental distraction, the combination is more relevant than the number of adjustable controls. Neither strong noise cancellation nor personalized calibration guarantees that every listener will prefer the sound. [3], [5], [2]
Comfort and buyer fit
Comfort remains a central part of the recommendation. Pack Hacker reports plush padding, a stable fit in its everyday use, and comfortable extended work sessions. AudioReviews also describes low clamping force and a light polycarbonate construction. These are reviewer experiences rather than a guarantee that every head shape or pair of glasses will feel the same. The new physical measurement is narrower: Jürgen Kraus reports weighing his headphone at 236 g. The review does not disclose the scale model or whether any accessories were included, so this revision records those conditions as unknown. It does not silently substitute a catalogue mass or average that result with other published figures. Weight can inform a portability discussion, but it does not directly measure comfort, pressure distribution, or how warm the pads feel. A buyer should use the weighing as one piece of evidence and still try the fit for the intended listening duration. [1], [5], [6]
The clearest supported use case is travel or office listening where reducing noise and wearing the headphones for long periods matter more than maximizing battery endurance. Pack Hacker's account adds useful ownership detail: the removable pads can be cleaned or replaced, and the reviewer found the carrying case relatively slim for travel. Its favorable comfort assessment should be read alongside its less enthusiastic battery assessment. The practical question is whether the buyer's routine includes convenient charging opportunities between longer sessions. Someone alternating between a desk and journeys may value the combination of comfort, noise cancellation, and USB-C listening, while someone who wants to forget about charging should examine the runtime limitation more carefully. These are needs-based implications of the evidence, not a promise that this model leads every category. Trying the fit and confirming the desired source connection are better decision checks than treating a review score as a physical performance measurement. [3], [1], [5], [4]
Battery and wired audio
The official owner's guide rates playback at up to 30 hours with noise cancellation on and Immersive Audio off. With both features on, the rated figure becomes 23 hours. These are manufacturer figures tied to stated settings, not an independently measured rundown performed for this article. A buyer who expects to use spatial processing throughout a journey should plan around the relevant mode instead of treating 30 hours as a promise under all conditions. The guide also allows up to three hours for a full charge and says charging is slower while the headphones are being used. Pack Hacker's hands-on account describes topping up after a couple of days of heavy use, but it does not provide a controlled hourly measurement. That observation is useful for understanding the reviewer's routine; it cannot establish the runtime of another person's listening schedule, volume, or chosen processing mode. [1], [4]
USB-C lossless wired listening is documented, and the guide separately explains the AUX connection. AUX uses the audio cable, but the headphones must remain powered on, so the cable does not create a passive fallback when the battery is empty. The guide says that this AUX path disables Bluetooth and voice pickup from the earcup microphones. Buyers intending to join calls should therefore distinguish music playback from microphone availability rather than assuming that any wired connection works as a complete headset. USB-C external power provides another route: the guide permits continued use while charging after battery depletion. This can be helpful at a desk with an appropriate power source. For wireless features, Snapdragon Sound requires a certified source device. An Android label alone does not prove that the phone supports this particular feature. Check the actual source device and intended cable path before relying on a specific listening or calling setup. [3], [4]
Build and repairability tradeoffs
Construction and serviceability deserve separate consideration. AudioReviews identifies light polycarbonate, which helps explain the reviewer's impression of a lightweight headphone without proving long-term durability. Pack Hacker's favorable observations after its usage period establish what its sample looked like then; they do not demonstrate years of wear resistance. The battery presents a firmer ownership constraint. The existing review evidence says it is not user-replaceable, and the official guide directs battery removal to a qualified professional. This does not mean service is impossible, but it does mean the owner should not assume a straightforward do-it-yourself battery replacement. If keeping a headphone beyond the original battery's useful life is important, investigate available service arrangements before buying. Removable ear pads address a different wear item and should not be presented as evidence that the battery is similarly accessible. No service price or total ownership-cost calculation is asserted here. [1], [5], [6], [4]
The overall decision is conditional on priorities. This model has a well-supported case for buyers seeking comfortable noise-cancelled listening and a choice of wireless or USB-C audio. It is less aligned with a requirement for extensive equalizer control, passive AUX playback with no power, or owner-performed battery replacement. Those boundaries come from specific claims rather than an invented all-purpose verdict. This revision also separates what could be verified from what could merely be read: several public review pages refused native snapshots, so their accessible test results were not imported as new verified measurements. The stored independent weighing is real but has incomplete setup details; no new independent battery rundown is claimed. Buyers should therefore compare the manufacturer's runtime conditions with their intended use, try the fit, confirm device compatibility, and check service options. These checks turn the evidence into a practical selection process while keeping its remaining uncertainties visible. [1], [5], [3], [6], [4], [2]
Specifications
Weight
236 gReviewer weighed the headphone; scale model and accessory inclusion were not disclosed. · Jürgen Kraus reports 236 g for his review unit. This is a single reported weighing, not a manufacturer mass or a comfort rating; scale and accessory conditions are undisclosed.
Source [6]Alternatives
| Alternative | Where this Product wins | Where it loses | Pick it if |
|---|---|---|---|
| Audio-Technica ATH-R70xa Flagship Professional Open-Back Reference Headphones | The Bose offers active noise cancellation and manufacturer-rated battery operation up to 30 hours with Immersive Audio off; the stored R70xa comparison describes a wired open-back reference-listening design. [4], [3] | The Bose battery is not user-replaceable; the existing R70xa comparison concerns a wired reference-listening design. [5] | Choose the Bose for noise-cancelled travel and battery-powered wireless listening; use the existing R70xa comparison for balanced open-back reference listening. |
| Specification | Bose QuietComfort Ultra Headphones (2nd Generation) - Black | Audio-Technica ATH-R70xa Flagship Professional Open-Back Reference Headphones |
|---|---|---|
| Impedance | Not stated | 470 Ω |
| Interface | AUX cable use disables Bluetooth and earcup microphone voice pickup. [4] | 3.5 mm stereo mini jack |
| Buyer Fit | Comfortable for long listening sessions. [1] | Suited to listeners seeking technical, balanced open-back sound. |
Buyer questions
Before you buy
Who are these headphones best suited to?
Travel and office listeners who prioritize comfortable noise-cancelled listening. Try the fit first and consider the charging and battery-service limitations. [5], [4]
What sound profile is described?
The tuning is described as warm, bass-forward, and mildly V-shaped. [3]
Compatibility
Does it support wired digital audio?
Yes. The evidence documents lossless wired audio over USB-C. [3]
Does AUX work with an empty battery or as a microphone headset?
AUX requires the headphones to be powered on and disables Bluetooth and earcup microphone pickup. USB-C external power can support use while charging after battery depletion; do not assume passive AUX playback. [4]
Everyday use
How long is the rated battery life?
Bose rates up to 30 hours with ANC on and Immersive Audio off, or 23 hours with both on. These are manufacturer specifications; this revision adds no independently verified battery rundown. [4]
Care and maintenance
Can the user replace the battery?
No. The battery is not user-replaceable. [5]
Facts and specifications
Manufacturer manual
| Specification | Value | Source |
|---|---|---|
| Battery Life | 23 hours US; 30 hours US | [4] |
| Charge Time | 3 hours US | [4] |
| Compatibility | Snapdragon Sound requires a Snapdragon Sound-certified source device.; USB-C external power allows the headphones to be used while charging after battery depletion. | [4] |
| Interface | AUX cable use disables Bluetooth and earcup microphone voice pickup. | [4] |
| Setup Requirement | Battery removal should be conducted only by a qualified professional.; The headphones must be powered on to use the AUX audio cable. | [4] |
Stated by reviewers
| Specification | Value | Source |
|---|---|---|
| Form Factor | Included case has a structured hard shell and slim travel profile. | [1] |
| Interface | USB-C lossless wired audio | [3] |
| Materials | Light polycarbonate; Removable ear pads can be cleaned or replaced. | [6], [1] |
| Active Noise Cancelling | Yes | [3] |
| Software | The Bose app EQ uses simple three-band shelves rather than a full parametric equalizer. | [2] |
Measured by a lab
| Specification | Value | Source |
|---|---|---|
| Weight | 236 g | [6] |
Other facts
KnowSpec analysis
Comfort and quiet with explicit ownership boundaries
Travel and office buyers have a supported reason to prioritize this model's comfort, ANC and USB-C listening. The 30-hour figure is a manufacturer rating with Immersive Audio off, falling to 23 hours with it on; AUX needs power and disables earcup microphone pickup. Try fit and confirm the source device, and investigate battery service if long ownership matters.
Method: Synthesis of manufacturer operating conditions and independent hands-on observations; weighing kept separate from subjective comfort.Visible information gaps
Missing information is shown rather than guessed.
- Battery Liferights restricted
- Topic:Amplifier Requirementsnot found
- Topic:Distortionnot found
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Sources and method
- Bose QuietComfort Ultra Headphones (2nd Gen) ReviewPack Hacker · retrieved 2026-09-27Editorial review
- Bose QC Ultra Gen 2 Is WAY Better Than You (Probably) ThinkHeadphones.com · retrieved 2026-10-08Editorial review
- Bose QuietComfort Ultra Headphones (2nd Gen)Audiowords · retrieved 2026-09-27Editorial review
- QuietComfort Ultra Headphones (2nd Gen) Owner's GuideBose · retrieved 2026-10-08ManualPDF
- Bose QuietComfort Ultra Headphones (2nd Gen)UKTechExpert · retrieved 2026-09-27Editorial review
- Bose QuietComfort Ultra (2nd Gen.) REVIEW – Space PatrolAudioReviews.org · retrieved 2026-10-08Editorial review