ANC is the main weakness. The open design limits sealing, so the effect is modest against chatter and steady noise and much less convincing against higher-frequency or sudden sounds, even if it appears somewhat improved over Buds 3.
ANC is consistently rated as very good for $99: strong enough for commuting, offices, and travel, but still a step below the very best premium earbuds. The ANC controls are a plus, with multiple levels and adaptive behavior giving users more flexibility than many earbuds at this price.
Android compatibility is strong, and Galaxy phones get the most complete experience. Non-Samsung Android users still get meaningful control through Samsung's software, but the best extras remain Galaxy-first.
Android users get extra upside from features like Fast Pair and LDAC, making the Ear (a) a particularly good value outside closed ecosystems.
Samsung's settings integration and Wearables app expose useful controls, EQ options, and ANC adjustments. The software feels feature-rich, though some advanced features stay exclusive to Galaxy phones.
Nothing X is widely praised for being clean, stable, and genuinely useful rather than filler software, adding meaningful value to the overall package.
Bass is a standout strength, with reviewers repeatedly calling it punchy, warm, and satisfyingly deep for an open-fit earbud. It is not as textured as the Pro model, but it gives the Buds 4 a lively, full sound.
Bass is energetic and satisfying, with enough weight for pop and hip-hop, but the default tuning can lean bass-heavy until you dial it back in the app.
Battery life is acceptable rather than exceptional at roughly 5 to 6 hours from the buds and up to 30 hours with the case. Reviewers treat endurance as serviceable, not a category advantage.
Battery life is a clear plus overall, especially with ANC off, and most reviewers found the case and quick top-ups easy to live with day to day.
Connectivity looks strong overall, helped by Bluetooth 6.1 and solid range in real-world use. The bigger limitation is not dropouts but that the smartest switching behavior is mostly reserved for Samsung-centric setups.
Bluetooth stability is mostly solid, but there are scattered reports of stutters in interference-heavy areas, so reliability is good rather than flawless.
Build and finish are seen as more refined than the previous generation, with a more polished stem design and cleaner execution. The Buds 4 feel premium enough for the price, though not especially rugged.
General build quality is good enough for the price, but the clear plastics and case finish draw some concern about scratches, creaks, and long-term wear.
The case earns positive marks for its flatter layout, translucent lid, and practical physical pairing button. It feels useful and better thought out than a generic accessory shell.
The case is generally liked for its smaller footprint and pocketability, though some reviewers found it fiddly to open, awkward to load, or prone to cosmetic wear.
Charging is convenient thanks to fast USB-C top-ups, but the missing wireless charging is one of the most repeated compromises in the reviews.
Codec support is strong for the price, covering AAC and SBC broadly while also adding LDAC for higher-quality Android listening.
Comfort is one of the Buds 4's biggest wins, especially for listeners who prefer open-fit earbuds or have smaller ears. The only caveat is that the looser fit can require occasional readjustment.
Long-session comfort is one of the most consistently praised traits, with reviewers repeatedly calling the earbuds easy to wear for hours without fatigue.
Design feedback is favorable overall: slimmer stems, a cleaner case, and a more polished look improve the presentation. The main knock is that the styling still feels very close to Apple's template.
Design is a major selling point: the transparent Nothing look feels distinctive, stylish, and far less generic than most earbuds in this price band.
The included tip selection works for most listeners, but the fit options are not especially expansive, so very small ears may need more trial and error.
EQ flexibility is unusually strong for mainstream earbuds, with both a multi-band equalizer and preset options available. This gives listeners real room to tailor the sound signature.
EQ options are helpful and easy to use, but customization depth is limited versus pricier models because the Ear (a) relies on a simpler 3-band approach.
Find My is a small but appreciated bonus that makes the feature set feel unusually complete for budget earbuds.
The Buds 4 separate vocals, synths, percussion, and layered mixes well for the class. They are not hyper-analytical, but they rarely sound congested or smeared.
Where instrument separation was discussed, the Ear (a) performed well, making layered parts and small details easier to pick out than expected for budget buds.
LDAC support is a real differentiator in this segment and repeatedly mentioned as one reason the Ear (a) feels more premium than its price suggests.
Noise reduction during calls performs better than expected and can suppress loud background noise effectively. The tradeoff is that strong processing can make the speaker sound a bit digitized.
Voice isolation can be impressively effective in some tests, yet reviewer consensus is more mixed once wind and heavier background noise enter the picture.
Call quality is good in quiet spaces and usable in noisier ones, but it is not best-in-class. Voices remain understandable, though they can sound slightly muffled or processed compared with stronger premium rivals.
Call quality is usually clear enough for everyday use, but it is not universally excellent, with some reviews reporting compressed or only average-sounding calls outdoors.
Midrange tuning is clear and well judged, keeping vocals and core instruments present even with the Buds 4's fuller bass. This helps the earbuds sound richer than many entry-level competitors.
When reviewers called out the mids, they usually praised clear vocals and an open midrange, though the tuning is still more fun than strictly neutral.
Basic listening works across devices, but the overall experience is plainly Samsung-centric. iPhone users and people mixing Apple, Windows, and Galaxy hardware lose access to several of the best features.
Cross-platform behavior is a quiet strength, with reviewers liking that the core experience works well across Android, iPhone, and PC instead of favoring one ecosystem too heavily.
Automatic switching is strongest inside the Galaxy ecosystem and notably less convenient elsewhere. Mixed-device users should expect more manual intervention than they would want at this price.
Multipoint is a standout convenience feature here, with most reviews praising smooth two-device switching, though a few noticed occasional prioritization hiccups.
Passive isolation is weak because the open design does not create a proper seal. That physical limitation is a big reason the ANC never becomes truly class-competitive.
In-ear detection and related sensor-based conveniences add polish, though fit sensitivity can occasionally trigger false pauses until the tips are dialed in.
Setup and customization are straightforward on Galaxy phones and still manageable on other Android devices through Wearables. The biggest friction comes from Galaxy-only options rather than a confusing interface.
Setup and day-to-day software use are repeatedly described as fast, intuitive, and frustration-free, which helps the earbuds feel polished beyond their price.
Sound quality is the clearest reason to buy the Buds 4. Across the reviews, the earbuds are praised for rich tuning, strong bass, clear vocals, and a presentation that beats many direct price rivals.
Across the reviews, sound quality is the Ear (a)'s biggest strength: lively, clear, and more refined than most sub-$100 rivals, even if it stops short of true flagship polish.
For everyday earbuds, the Buds 4 sound fairly open and spacious, especially with higher-quality Galaxy playback modes enabled. They do not sound huge, but they avoid the boxed-in feel common at this tier.
Several reviews describe the presentation as wider and more spacious than expected at this price, helping music and movies feel less boxed in.
Spatial audio is present as a headline feature, but clear enthusiasm is limited. It adds another box to the feature list more than it defines the Buds 4 listening experience.
Fit stability is acceptable for regular daily use, but the open shape can shift enough to require adjustment. This is not the best pick for people who prioritize a locked-in feel.
Fit security is usually strong enough for commuting and light workouts, though a few reviewers still had occasional loosening depending on ear shape and activity.
Touch and stem-based controls are a strength. Reviewers repeatedly call them easy to locate, responsive, and customizable, with the flatter stem helping usability.
The pinch-based controls are usually described as responsive and more reliable than typical tap controls, although some advanced gestures take practice.
Transparency mode is usable and sometimes above average for the class, but it is also one of the most common weak spots, especially versus flagship rivals.
Treble comes through cleanly with good detail and vocal presence. Reviewers do not describe it as harsh or thin, which helps the Buds 4 avoid sounding brittle despite their lively tuning.
Treble detail is generally strong for the class, but some listeners noted the top end is not as airy or extended as pricier earbuds.
Voice assistant support is solid on paper, with access to Bixby and Gemini plus Galaxy-focused conveniences. It adds real hands-free utility, even if reviewers do not treat it as the product's main selling point.
Volume output is strong, with enough headroom for outdoor use, though not every reviewer found it exceptionally loud versus the broader market.
IP54 is enough for sweat and light splashes, making the Buds 4 workable for everyday workouts and commuting. Still, the rating is not especially rugged and is a downgrade from tougher earlier protection.
The buds are seen as gym- and commute-friendly thanks to their splash resistance, but the lower-rated case means the protection is not equally robust everywhere.