Compare Soundcore by Anker Space A40 Earbuds vs Bose QuietComfort Ultra Earbuds (2nd Gen)

Reviewers generally found ANC strong for the price, especially against low, steady noise, though several noted weaker performance against voices, high frequencies, or premium ANC competitors.

Reviewers strongly agree that ANC is the standout feature: it removes airplane, subway, traffic, keyboard, cafe, and other ambient noise better than most or all earbuds they tested, with only minor caveats about hiss or sudden spikes.

Android users were singled out for benefiting from LDAC and broad device compatibility, while iOS remained limited to other codecs.

Android users are treated as a strong audience because the earbuds support advanced options and Snapdragon-related features, though some phone compatibility limits remain.

The Soundcore app was widely praised for useful controls, customization, EQ, and feature access, with only minor complexity or multi-device app caveats.

The Bose app is useful and sometimes clean, offering modes, controls, sources, EQ, and fit tools, but reviewers also found it mandatory, occasionally daunting, and not especially customizable.

aptX Lossless/Snapdragon Sound support is viewed as a useful premium codec feature for compatible devices.

Video sync and gaming latency were mostly reported as solid, with several reviewers finding minimal or no noticeable delay.

Audio-video sync is praised for video editing, but gaming latency is criticized for quick-reaction games, making latency performance mixed by use case.

Bass was usually described as punchy, steady, or adequate, but some reviewers wanted deeper sub-bass or found the default tuning too bass-heavy.

Bass is generally rich, punchy, and deep, but some reviewers think Bose overboosts the low end or gives it too much emphasis for neutral listening.

Battery life was one of the strongest areas, with most reviewers reporting long sessions and strong case endurance despite LDAC or ANC reducing runtime.

Battery life is consistently described as adequate or average rather than class-leading, usually around six hours with ANC and less with immersive audio.

Bluetooth performance was mostly stable and quick, but one reviewer had frustrating re-pairing issues and another noted manual disconnect hassles.

Bluetooth reliability is mostly positive, with several reviewers reporting no dropouts, though one reviewer wished Bose had moved beyond Bluetooth 5.3.

Build impressions were generally positive for the buds and case materials, though SoundGuys criticized the case hinge security.

Build quality is described as premium for the earbuds themselves, even when the case does not always feel equally high-end.

For running, one reviewer would prefer physical button controls because touch gestures are harder to use precisely during workouts.

The included cable drew a minor complaint because PCMag wanted a longer USB-C-to-USB-C cable.

Case feedback was split: many liked the compact, premium-feeling case and charging support, while others criticized hinge/lid security or closure.

The case is functional and now charges wirelessly, but reviewers repeatedly describe it as bulky, clunky, or less premium than the earbuds.

Charging was praised for wireless charging, USB-C, quick-charge usefulness, and a strong charging case, with few complaints beyond battery mode tradeoffs.

Charging is a notable upgrade thanks to wireless charging and case improvements, although one running-focused review found quick charging slower than ideal.

Codec support was viewed positively because LDAC joins AAC and SBC, though aptX was only factually absent and not scored.

Codec support is praised as premium because the earbuds support high-quality Bluetooth codecs.

Long-use comfort was a consistent strength, with most reviewers finding the buds light and wearable for hours, though a few reported pressure or fit-dependent comfort limits.

Comfort is a major strength for many reviewers over long sessions, flights, runs, and daily use, though very small ears may struggle.

Design was consistently described as sleek, compact, premium-looking, or stylish for the price.

Design impressions are mixed-positive: some like the sleek, subtle, creative look, while others note the chunky or busy shape may divide people.

Several runners or active users noticed footstep thud or earbud movement noise, especially during runs or with sweaty ears.

Fit was usually secure with a good seal, though reviewers emphasized tip choice and one found the stock XL tips inadequate.

Fit is generally secure and seal-friendly, helped by the ovoid nozzle, ear tips, and stability bands, though individual ear shape still matters.

The included tip selection was usually praised for offering many sizes, but one reviewer with large ear canals found even the largest tips too small.

Ear tip and wing options help fit, but the running-focused review wanted more than three sizes at this price.

EQ customization was a standout strength thanks to many presets, custom EQ, HearID, and frequent praise for tuning flexibility.

EQ customization is the clearest software weakness: many reviewers criticize the basic three-band EQ as too limited for premium earbuds.

Find My support was treated as a useful bonus, though the evidence centered on beeping-style device finding rather than GPS tracking.

Frequency response was viewed as enjoyable and often balanced for the price, but not fully neutral or accurate enough for critical listening.

Measurement-focused reviews say the frequency response is heavily shaped, with overemphasized bass and treble and recessed mids.

The only direct hinge evidence was negative, with SoundGuys saying the case hinge was not tight enough.

Included fit accessories are appreciated when they help tailor the fit, though other reviews still wanted more size options.

Instrument separation was praised in multiple reviews, with instruments and mix elements described as clear, well placed, or easier to distinguish.

Instrument separation is widely praised, with reviewers hearing open mixes, distinct sections, and easy-to-pick-out track elements.

Integrated microphones were generally considered useful and capable, especially for calls or ANC, though mic quality varied in separate call-quality scoring.

Integrated microphones are praised in stronger call-focused reviews for clear voice pickup and background rejection.

Independent left/right bud use was praised as seamless, with no connection break reported.

LDAC was repeatedly treated as a meaningful advantage for Android or hi-res Bluetooth listening, though it reduced battery life in some testing.

Lossless support through aptX Lossless/Snapdragon Sound is treated as a useful premium feature for compatible devices.

The one direct maximum-volume clarity test was positive, noting no distortion in the lows at top volume.

Maximum-volume clarity is strong in the running review, which heard clarity and no distortion even when volume was raised.

Microphone noise reduction was mixed: some reviewers praised voice isolation in noise, while others found ambient handling weak or inconsistent.

Microphone noise reduction ranges from excellent SpeechClarity performance to weaker lab samples, but the overall reviewer consensus is improved and often strong.

Call microphone quality was the clearest weakness, ranging from loud and clear to thin, muffled, serviceable, or poor depending on reviewer and environment.

Call microphone quality is mixed: some reviewers call it exceptional or much improved, while others say it is merely fine or still affected by noise.

Midrange comments were mostly positive for vocals and clarity, though a few reviewers found mids veiled, dull, or slightly lacking.

Midrange clarity is usually praised for warm vocals or crisp presentation, but measurement-focused reviewers complain that boosted lows and highs recess the mids.

Cross-device compatibility was positive, with reviewers using phones, laptops, tablets, iOS, and Android without major platform-specific barriers.

Cross-platform use is positive, with reviewers recommending Bose for both Android and iPhone users and reporting smooth use on both platforms.

Multipoint reliability was a major strength, with reviewers repeatedly describing device switching as seamless, reliable, or essential.

Multipoint is a welcome and often seamless upgrade, though one reviewer noted setup/custom tune trouble when audio was already playing.

Passive isolation was considered good when fit was right and helped ANC performance, though it remained dependent on a proper seal.

Passive isolation benefits from a tight seal and secure nozzle shape, with reviewers noting strong sealing and little noise bleed.

Portability was a consistent strength, especially the small case and compact buds that fit pockets easily.

Portability is mixed because the earbuds and case are pocketable, but the case is often called large or hard to carry while running.

Preset EQ quality was useful but mixed: some presets worked well, while bass-boost style presets were criticized for limited or muddy results.

Preset EQ profiles are poorly regarded because they are basic and do not adequately fix the tuning complaints.

Sensors were a repeated weakness because multiple reviewers missed wear detection or auto-pause.

Sensor behavior is a weak spot in the few comments available, with reviewers criticizing early CustomTune firing and suggesting in-ear detection be disabled.

The only smudge-resistance evidence was positive, noting the case finish should resist visible fingerprints.

Setup and software simplicity were generally praised, with reviewers calling the app simple, the guide sufficient, or setup easy.

Setup simplicity is imperfect because one reviewer reported trouble with CustomTune when connecting another device during playback.

Sound leakage evidence was limited but positive, with one reviewer saying the buds kept sounds private.

Sound leakage is rated positively in the one direct test, with the reviewer reporting little outside noise bleed.

Overall sound quality drew strong praise across the review set for clarity, balance, detail, and value, with only critical-listening caveats.

Sound quality is broadly strong, with rich, detailed, bass-forward playback praised by most reviewers, though a few disliked the stock tuning.

Soundstage depth is praised in orchestral and spacious listening comments, though evidence is less extensive than for overall sound quality.

Soundstage width was usually praised as wide, spacious, or well-imaged, though one reviewer found the stage narrow.

Soundstage width is praised for an open, wide, detailed presentation that helps mixes feel bigger than typical earbuds.

Spatial audio is divisive: some reviewers find it natural, cool, or useful, while others prefer standard stereo or dislike the processing.

Stability was generally strong for walking, workouts, and daily use, but one reviewer warned against serious running or sprinting.

Stability is mostly excellent, especially for running and workouts, but one reviewer still disliked the running feel and movement.

Touch controls were mixed: several reviewers found them responsive and customizable, while others reported delays, missed gestures, or sensitivity issues.

Touch controls split reviewers: some find them responsive, intuitive, and complete, while others call them fussy or hard to use precisely during runs.

Transparency mode was mixed, from very good vocal/ambient awareness to bright, tinny, hissy, or limited adjustability.

Transparency mode is generally good to excellent, especially Aware/ActiveSense, but several reviewers still prefer Apple or note wind, hiss, or manual-adjustment limits.

Treble was often clear and detailed, but some reviewers noted sibilance, thin cymbals, reduced sparkle, or upper-register sharpness.

Treble is often described as clear, sparkly, or balanced, but measurement-focused reviews say it can be overemphasized or occasionally hard to fix with EQ.

USB-C was positively tied to easy recharging in the one directly opinionated USB-C quote.

Value was the strongest consensus point, with nearly every reviewer framing the Space A40 as a standout bargain for features and performance.

Value depends heavily on priorities: reviewers see the premium price as justified for ANC and sound, but weak for Gen 1 owners or bargain-focused buyers.

Voice assistant support was split, with one reviewer reporting poor Google/Siri behavior while another found the microphones sensitive enough for requests.

Voice assistant integration gets limited but positive evidence, with reviewers saying Google Assistant or assistant shortcuts worked without hassle.

Volume output was considered more than loud enough by reviewers who discussed it, including one who said loud-listeners would be satisfied.

Volume output is strong in the one direct measurement-style review, which says Bose makes loud earbuds.

Water and sweat resistance was viewed as useful for rain, sweat, and workouts, but IPX4 was also described as limited or not especially rugged.

Water and sweat resistance is considered sufficient for workouts and light rain, though not fully waterproof.

Weight comfort was strongly positive, with reviewers repeatedly noting light buds that disappear or avoid fatigue.

Weight comfort is positive despite the buds being chunky or slightly heavier; reviewers said the weight was not annoying and still felt fine.