Compare OnePlus Buds 3 vs Sennheiser CX 80U Wired Earbuds

ANC is the most divided area: several reviewers call it strong or impressive for the price, while others say it is average, weak, or below competitors.

Android compatibility is strong because reviewers emphasize that a OnePlus phone is not necessary to access core features.

Android-style USB-C use was strong in Tom’s Guide testing, where the earbuds worked seamlessly with a Google Pixel phone.

The app is a major strength, with reviewers praising easy setup, strong feature access, stability, and broad control options.

Tom’s Guide noted there is no companion app, but judged that absence as not a major drawback for these wired earbuds.

Audio-video sync is generally strong for video and casual gaming, with occasional gaming delay noted in demanding cases.

Bass is one of the strongest themes: many reviewers praise its punch, depth, and fun energy, while a few find it too much or underwhelming out of the box.

Bass was generally described as clean, responsive, punchy, and powerful, though both transcripts noted the deepest sub-bass lacked some weight.

Battery life is viewed as good enough by most reviewers, but not universally impressive and vulnerable to feature drain.

Bluetooth reliability is positive where tested, with strong range and stable everyday connectivity noted by reviewers.

Build quality is generally positive, with reviewers noting durable finishes and solid construction after use.

TechRadar explicitly praised the earbuds’ build quality as impressive for the budget category.

Hi-res playback brings some benefits, such as lower distortion or slightly better quality, but reviewers describe the improvement as limited.

Tom’s Guide treated the built-in DAC and hi-res playback support as a major selling point for budget wired earbuds.

Control usability is strong where volume swipes are discussed, although one review criticized the default omission of play/pause.

Control usability was mixed: TechRadar disliked the missing volume buttons, while Tom’s Guide praised the button feel and responsiveness.

The included cable drew a mild negative note because PCMag called it short despite recognizing the signature USB-C cable.

Cable quality drew criticism from Tom’s Guide because the wires lack anti-tangle design and bunch up in a pocket.

Carry case quality is mixed: reviewers like the compact pocketable case, but one questioned the plastic case’s toughness.

Charging is mixed: fast charging helps, but the repeated lack of wireless charging is one of the most common drawbacks.

Codec support is useful but imperfect: LHDC support earns interest, yet limited device support and unstable high bitrates reduce its practical value.

Comfort is widely praised, with many reviewers saying the earbuds are comfortable for long sessions, though one found fit only moderately comfortable.

Comfort was excellent across both reviews, including multi-hour listening with no irritation and full marks for long-period wear.

Design is broadly praised for looking stylish, premium, sleek, and attractive, with only smudging treated separately as a drawback.

Design reactions were split: TechRadar loved the classy look, while Tom’s Guide found the lowkey all-black design unflashy.

Eartip fit is mostly positive for comfort and seal, though one review notes the looser fit can let a bud slip out.

Fit was a major positive, with the right seal improving comfort and Tom’s Guide’s chosen tips staying put securely.

Ear tip sizing receives one mild complaint that extra-large tips would have been useful.

Both reviews valued the supplied eartip options because they helped users find a better fit and seal.

EQ customization is useful and often effective, though one review found it too light-touch to correct the bass-heavy sound.

Equalizer customization is limited, but Tom’s Guide did not feel a need to tailor the sound profile during use.

Frequency balance is often considered improved or well tuned, but reviewers frame it as consumer-friendly rather than strictly neutral.

The tonal balance was broadly praised as full-range and accurate, but Tom’s Guide still noted the lowest frequencies were less refined.

Hinge durability is positive in the reviews that mention it, with both describing the case hinge as sturdy and not flimsy.

Instrument separation and imaging are frequently praised, with reviewers noting above-average placement, exceptional separation, and clear directional cues.

Instrument and vocal separation were praised, with layers avoiding muddiness and words not bleeding together.

The integrated mic array is praised in the scored review for supporting clear speech recognition.

The integrated mic was usable but not impressive, with decent voice clarity offset by static and limited call quality.

Tom’s Guide praised the earbuds for lossless, low-latency playback support up to 24-bit/96KHz.

Maximum-volume clarity is mixed: PCMag praised distortion-free bass at top volumes, while Scarbir warned treble can become overwhelming.

At peak volume, the TechRadar review found the treble stayed controlled instead of becoming harsh or tinny.

Microphone noise reduction is often praised for suppressing background noise and wind, though Android Central was less convinced outdoors.

The mic picked up noticeable background static, suggesting weak noise handling during recording or calls.

Call microphone quality is usually good to excellent, with praise for loud, clear voices, though a few reviewers consider it merely adequate.

Call mic performance was a weakness in TechRadar’s testing, with acceptable voice clarity but below-best call quality.

Midrange impressions vary: some hear clear vocals and mids, while others find the mids veiled or recessed behind the stronger bass and treble.

Mids and vocals came through clearly, with one review praising robust balance and the other emphasizing intelligible, separated vocals.

Multi-platform compatibility is positive in the scored review, which found audio quality consistent across several phones.

Multi-platform compatibility was strong, with Tom’s Guide reporting seamless use across a Pixel phone, MacBooks, and an iPad.

Multipoint is a consistent strength, with reviewers calling it brilliant, flawless, convenient, and useful across phones, laptops, and other devices.

Passive noise isolation was repeatedly praised, with the seal and eartips blocking office chatter and reducing external sounds well.

Portability is positive in the scored review, which highlights the compact, lightweight design of the buds and case.

Pocket portability is undercut by the cable tangling and bunching, which Tom’s Guide found annoying to manage.

Smudge resistance is weak because reviewers repeatedly describe the glossy earbuds as fingerprint-prone.

Setup and software simplicity are mixed: several reviewers call setup or the app easy, while others report slow pairing or calibration/connectivity friction.

Setup simplicity was excellent because the USB-C plug-and-play interface worked without friction.

Reviewers generally like the sound for the price, often calling it good, rich, or entertaining, though some note bass-heavy tuning and imperfect balance.

Reviewers strongly praised the CX 80U’s sound for detail and refinement, while one review framed it as mostly superb because the lowest bass was weaker.

Soundstage is viewed as respectable to impressive for the price, though one reviewer felt pricier Pro buds opened up audio more.

Both reviewers found a convincing sense of space, including defined treble placement and a notably wide soundstage.

Spatial audio divides reviewers: some call it immersive and unusually good at this price, while others find it underwhelming, fake, or unnatural.

Fit stability is mostly good for exercise and daily use, though some reviewers see it as better for lighter activity or dependent on eartip fit.

Stability was excellent in Tom’s Guide testing, with the earbuds staying in place while stationary and walking.

Touch controls are mostly praised for responsiveness and customization, but some reviewers report missed taps, accidental presses, or awkward use while moving.

Transparency mode ranges from natural and useful to confusingly ineffective, with reviewer experiences varying more than for most other features.

Treble receives split feedback, from clear and detailed to blown out, spicy, harsh, or insufficiently crisp depending on reviewer and volume.

Treble was a strength in both reviews, staying vivid and bright without turning harsh, tinny, or shrill.

USB-C was a major advantage in both reviews, improving fit with modern devices and making the earbuds more versatile.

Value for money is one of the clearest strengths, with most reviewers praising the $100 feature set despite some tradeoffs.

Value was a standout strength in both reviews, with strong praise for the sub-$40 sound and overall bang for the buck.

Voice assistant integration is positive in the one scored review, which says assistant commands worked well hands-free.

Volume output is a strength for reviewers who like loud earbuds, with both scored reviews describing the Buds 3 as louder than average.

Water and sweat protection is treated positively for rain and sweat use, though reviewers do not frame it as suitable for submersion.

Water resistance was a limitation because TechRadar wanted at least IPX4-style splash protection and found no waterproofing claim.

Weight comfort is a strength: reviewers describe the buds as lightweight enough to barely register or be easy to forget in the ear.

Tom’s Guide tied comfort and stability partly to the very light individual earbud weight.