ANC is usually rated as strong and clearly improved, but not universally best-in-class; it excels more with steady noise than sudden sounds and remains behind the very top Bose, Sony, or Apple options for some listeners.
ANC is widely rated top-tier for everyday noise and transit rumble, but several reviews stop short of calling it the absolute best in the category. Noise control is highly adjustable, with adaptive ANC plus granular sliders that let you tune intensity and reduce pressure effects.
These earbuds pair especially well with Samsung and Android devices, and many reviewers frame that ecosystem fit as one of the product's biggest selling points.
The Galaxy Wearable experience is feature-rich and useful, but several reviews note that the best tools remain most valuable on Samsung devices.
The Technics Audio Connect app is feature-rich (ANC, EQ, multipoint, spatial settings), but some reviews call the interface clunky or menu-heavy.
Several reviews explicitly note aptX codecs are not supported.
One review notes that enabling the highest-quality Samsung audio mode can hurt lip-sync performance, making video playback less precise than standard settings.
Where tested, audio-video sync is reported as excellent with minimal to no noticeable lag.
Bass is widely described as deep, punchy, and well-controlled, but a minority of reviewers thought the low end could overpower some tracks without EQ tweaks.
Bass is repeatedly called deep and unusually controlled for true wireless, though one review found it can feel heavy or change with ANC settings.
Battery life is serviceable rather than standout. Most reviews land around six hours per charge and see that as fine for everyday use, but short versus the longest-lasting rivals.
Battery life is commonly reported around 10 hours with ANC on (AAC) plus substantial case recharges, with lower figures when using high-res modes.
Bluetooth stability is generally solid, with good range and few disconnect complaints, though one review did note occasional dropouts.
Bluetooth stability is generally reported as reliable with few dropouts across devices and environments.
The redesigned case earns mostly positive marks for pocketability, easier docking, and the translucent lid, though a few reviewers found it blockier or more scratch-prone than ideal.
The case is generally pocketable and premium-feeling, but some reviews mention weak magnets, slight rattle, or scratch/scuff issues.
Charging convenience is strong thanks to USB-C and wireless charging support, and reviewers generally liked the case's day-to-day practicality.
Charging is praised for USB-C plus Qi wireless and quick-charge support; full recharge times are typically a few hours.
Codec support is strong for Samsung owners thanks to SSC and UHQ options, but the experience is less compelling outside the Galaxy ecosystem where higher-end features are restricted.
Codec support is strong (SBC/AAC plus LDAC and LC3/LE Audio features noted), appealing to both iOS users and Android audiophiles.
Long-session comfort is a major positive. Many reviewers wore the earbuds for hours on flights, work sessions, or daily use without significant fatigue.
Comfort is widely rated high thanks to a smaller/lighter fit, though some users may still experience fatigue or fit variability over long sessions.
Samsung's new look is broadly seen as more polished and premium, with the flatter metallic stem and refined case helping the Buds 4 Pro feel more distinct and mature.
Design is viewed as premium and more compact than the prior model, though not everyone finds it the sleekest-looking option.
Samsung includes multiple tip sizes, but fit outcomes still vary widely; some reviewers got a strong seal quickly while others could not find a great match.
Multiple ear tip sizes are commonly included, helping most users achieve a seal, though tip choice remains key to fit.
EQ customization is a clear strength, with reviewers frequently praising the custom bands and the ability to tune the sound away from the stock profile.
EQ customization is a strength, often cited as an 8-band EQ plus presets that can significantly change the sound.
Find My/location features are present, but feedback varies; some appreciate the feature, while others complain the locating beep or accuracy is limited.
Instrument separation is frequently cited as a standout, with cleaner layering and better distinction between elements than earlier Galaxy Buds generations.
Instrument separation is frequently praised on busy tracks, helping the AZ100 stay clean and layered.
LDAC support is frequently highlighted for higher-quality Android streaming, with the usual battery-life tradeoff.
Background-noise suppression during calls performs very well in most reviews, especially against wind, traffic, and loud ambient noise, even if the processed voice can sound a bit artificial.
Voice noise reduction is often effective at cutting wind and background noise, though aggressive processing can create artifacts.
Call quality is good overall, with clear enough voice pickup for everyday use, but several reviewers heard some digitizing, fuzziness, or mild warble in tougher conditions.
Call quality is mixed: many find it usable or improved, while others report robotic processing or, in one case, serious call glitches.
Midrange performance is a strength, with vocals and core instruments coming through clearly and without being swallowed by the boosted low end.
Midrange is generally clear and natural for vocals, with occasional notes that bass-heavy mixes can push voices slightly back.
Outside the Samsung ecosystem, the Buds 4 Pro lose meaningful convenience and some premium features, so cross-platform users get a less complete product.
Multipoint and device switching are a weak spot. Galaxy-to-Galaxy switching is convenient, but true cross-platform multipoint is missing or awkward.
Three-device multipoint is a major differentiator and is often described as seamless; occasional switching lag is mentioned but not common.
Passive isolation depends heavily on fit: reviewers with a strong seal found it effective, while others said the tips failed to seal well enough for class-leading isolation.
Preset EQ options are generally well received, especially the Dynamic-style tuning, though they are not a full substitute for manual tweaking if you dislike the default balance.
Preset EQ options are generally useful, though some (like extra-bassy modes) may be too much for neutral listeners.
Case finish durability is mixed, with some noting scratches/scuffs and others calling it relatively scratch-resistant.
Setup is not difficult, but one review noted a small learning curve because some controls moved from the old app-centered flow into Samsung's system settings.
Setup is mostly straightforward, but the lack of a case pairing button and some app UX quirks can add friction.
Across the review set, the Buds 4 Pro are consistently praised for rich, detailed, energetic sound, though a few reviewers found the tuning a bit bass-forward or Samsung-dependent at the top end.
Reviews consistently praise the AZ100 for highly detailed, spacious sound with strong dynamics; a few note the default tuning can be bass-forward or benefit from EQ.
When reviewers commented on staging, they found the presentation surprisingly open and spacious for true wireless earbuds, especially with Samsung's higher-quality audio modes.
Soundstage is a standout: multiple outlets describe an immersive, wide presentation that feels larger than typical earbuds.
Dolby spatial audio/head tracking is supported and can add immersion, but some reviewers find it subtle or prefer it off for music.
Fit security is good for many listeners, but not universal. Several reviewers found the buds locked in well, while others reported slipping during movement or difficulty maintaining a seal.
Fit stability varies: many report a secure hold, while some reviewers experienced looseness or buds falling out during vigorous movement.
Pinch and swipe controls are usually considered responsive and easier to use than last generation, though a few people still found the gesture scheme awkward at first.
Touch controls are responsive and highly configurable, with the main complaint being occasional over-sensitivity.
Transparency or ambient mode is one of the most consistently praised features, sounding natural and useful for conversations, announcements, and day-to-day awareness.
Transparency/ambient mode is strong and adjustable, but some reviewers note hiss at higher levels, an unnatural voice-focused mode, or not enough outside sound for awareness.
Treble is generally clear and lively with good sparkle, though a few reviews mention occasional high-frequency leak-through in ANC mode or a slightly uneven top-end balance.
Treble is described as airy and detailed without harshness, but a few critics wanted more sparkle or presence.
USB-C charging is consistently supported and frequently mentioned as a modern convenience.
The IP57 rating is repeatedly highlighted as a useful advantage for sweaty workouts, rain, and general durability, even though the buds are not meant for swimming.
The earbuds are commonly cited as IPX4-rated for sweat and light rain, but not for heavy water exposure.