Compare Technics EAH-AZ100 Earbuds vs Soundcore by Anker Space A40 Earbuds

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.

Across reviews, ANC is strong for the price, especially against steady low-frequency rumble (traffic, engines), but it is less consistent against voices and higher-frequency clatter; a few reviewers still call it merely adequate compared with premium flagships. ANC offers manual and adaptive modes plus strength presets, but several testers report little real-world difference between levels, and changing presets from the earbuds is limited; others find the adjustability useful enough to dial in.

Android support is strong, including access to LDAC and the full Soundcore app feature set on compatible devices.

The Technics Audio Connect app is feature-rich (ANC, EQ, multipoint, spatial settings), but some reviews call the interface clunky or menu-heavy.

The Soundcore app is a major value add: it is usually described as straightforward, stable, and essential for unlocking features like EQ, control remapping, and firmware.

Several reviews explicitly note aptX codecs are not supported.

aptX support is explicitly absent in multiple reviews, so users prioritizing aptX should look elsewhere.

Where tested, audio-video sync is reported as excellent with minimal to no noticeable lag.

Latency and A/V sync are generally reported as good, especially for video; gaming modes exist, but several reviewers say improvements are subtle and best for casual mobile gaming.

Bass is repeatedly called deep and unusually controlled for true wireless, though one review found it can feel heavy or change with ANC settings.

Bass tends to be punchy and fun, with some reviews noting a mid-bass lift; extension and sub-bass weight are more variable, and stock tuning can feel light down low for bassheads unless EQ is used.

Battery life is commonly reported around 10 hours with ANC on (AAC) plus substantial case recharges, with lower figures when using high-res modes.

Battery life is a consistent highlight: real-world playback commonly lands around 6–8 hours with ANC and higher without it, with the case extending total time well beyond a full workweek for many.

Bluetooth stability is generally reported as reliable with few dropouts across devices and environments.

Bluetooth stability is usually reliable with quick pairing and solid range, though at least one review reports intermittent re-pairing frustration that may require forgetting devices.

Overall build quality is solid for the price, though small durability concerns show up around case hinges and scratch-prone glossy interior surfaces.

The case is generally pocketable and premium-feeling, but some reviews mention weak magnets, slight rattle, or scratch/scuff issues.

The case is compact and convenient with wireless charging, but some reviews flag lid/hinge security or imperfect closure that can risk accidental opening.

Charging is praised for USB-C plus Qi wireless and quick-charge support; full recharge times are typically a few hours.

Charging features are premium for the price, typically including fast-charge boosts and wireless charging; real-world convenience is strong even if total runtime varies by codec and ANC.

Codec support is strong (SBC/AAC plus LDAC and LC3/LE Audio features noted), appealing to both iOS users and Android audiophiles.

Codec support is strong for the class (SBC/AAC with LDAC often available), but higher-quality modes can reduce battery life and may constrain other features like multipoint.

Comfort is widely rated high thanks to a smaller/lighter fit, though some users may still experience fatigue or fit variability over long sessions.

Comfort is a strong point thanks to the small shells and light weight; long sessions are generally easy, though a few users report minor pressure or discomfort after several hours.

Design is viewed as premium and more compact than the prior model, though not everyone finds it the sleekest-looking option.

Design is frequently described as stylish and premium-looking for the price, with a compact, pocket-friendly aesthetic that does not scream budget.

Multiple ear tip sizes are commonly included, helping most users achieve a seal, though tip choice remains key to fit.

Multiple ear tip sizes are included (often five or six), improving fit odds; however, people with very large ear canals may still need third-party XL tips.

EQ customization is a strength, often cited as an 8-band EQ plus presets that can significantly change the sound.

EQ customization is one of the standout features, with extensive presets plus custom multi-band control and HearID-style personalization that can noticeably refine mids/highs and bass balance.

Find My/location features are present, but feedback varies; some appreciate the feature, while others complain the locating beep or accuracy is limited.

Find My-style locating is present in some accounts, typically using audible beeps rather than true GPS tracking, and works as a practical backstop for misplaced buds.

Tuning is described as broadly balanced and inoffensive, with the ability to correct the signature via EQ; some note small tonal shifts when ANC is enabled.

Instrument separation is frequently praised on busy tracks, helping the AZ100 stay clean and layered.

Instrument separation and imaging are often highlighted as a strength, delivering good layering and placement for the money, though not at true flagship levels.

LDAC support is frequently highlighted for higher-quality Android streaming, with the usual battery-life tradeoff.

LDAC support is repeatedly called a key differentiator for Android users, enabling higher-bitrate streaming; expect higher power draw and the need to toggle settings in the app.

Maximum-volume clarity is mostly maintained, with limited distortion reported; tonal balance, rather than distortion, is the more common complaint at higher levels.

Voice noise reduction is often effective at cutting wind and background noise, though aggressive processing can create artifacts.

Mic noise reduction can be effective at separating voice from traffic or café noise, yet wind processing artifacts and aggressive suppression can reduce naturalness or intelligibility for some callers.

Call quality is mixed: many find it usable or improved, while others report robotic processing or, in one case, serious call glitches.

Call mic quality is mixed: indoor clarity is often fine, and some reviewers are impressed, but others report thin, muffled, or inconsistent voice pickup in louder or windy environments.

Midrange is generally clear and natural for vocals, with occasional notes that bass-heavy mixes can push voices slightly back.

Midrange is generally clear with decent vocal intelligibility, but a few reviewers note slightly veiled vocals or a cooler tuning that benefits from HearID/EQ tweaks.

Cross-platform support is good across iOS and Android, but the best codec features and some behaviors vary by platform (for example LDAC typically being Android-only).

Three-device multipoint is a major differentiator and is often described as seamless; occasional switching lag is mentioned but not common.

Multipoint/dual-device connectivity is commonly praised as smooth and dependable, but at least one source claims it is missing and others note tradeoffs (like dropping to AAC/SBC when enabled).

Passive isolation is generally above average with a good seal, providing a solid baseline even before ANC; fit-dependent leakage is the main limiter if tips do not seal well.

Preset EQ options are generally useful, though some (like extra-bassy modes) may be too much for neutral listeners.

Preset EQ profiles are plentiful and generally useful, giving workable options for music genres and spoken word; most reviewers still recommend light personalization for best results.

Wear sensors are a weak spot: multiple reviews call out the lack of auto-pause/in-ear detection, which reduces day-to-day convenience compared with some rivals.

Case finish durability is mixed, with some noting scratches/scuffs and others calling it relatively scratch-resistant.

Setup is mostly straightforward, but the lack of a case pairing button and some app UX quirks can add friction.

Setup is generally easy with quick pairing, but the feature set can feel dense; most reviewers suggest using the app to configure controls, codecs, and listening modes early.

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.

Sound quality is widely praised for a sub-$100 set, with a clean, detailed presentation and lots of tuning flexibility; a recurring theme is that it is enjoyable rather than truly reference-grade for critical listening.

Soundstage is a standout: multiple outlets describe an immersive, wide presentation that feels larger than typical earbuds.

Soundstage is typically called wider than expected for compact buds, but still varies by listener and EQ, with some describing it as more in-head than expansive.

Dolby spatial audio/head tracking is supported and can add immersion, but some reviewers find it subtle or prefer it off for music.

Fit stability varies: many report a secure hold, while some reviewers experienced looseness or buds falling out during vigorous movement.

Fit stability is generally good for daily use and light exercise, though the lack of stabilizing fins means heavy workouts and running can require occasional readjustment.

Touch controls are responsive and highly configurable, with the main complaint being occasional over-sensitivity.

Touch controls are customizable and usually responsive, but several reviewers mention occasional missed taps, lag, or finicky behavior that takes practice.

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.

Transparency mode is feature-rich (often with full and vocal-focused options) and can work well for quick conversations, but opinions diverge on naturalness: some hear hiss, brightness, or a narrow sound window.

Treble is described as airy and detailed without harshness, but a few critics wanted more sparkle or presence.

Treble detail is good for the price, yet multiple reviewers mention either a treble spike/snappiness or a slight roll-off and reduced sparkle depending on tuning and ANC mode.

USB-C charging is consistently supported and frequently mentioned as a modern convenience.

USB-C charging is standard and universally present, with quick top-ups frequently cited as genuinely useful.

Voice assistant integration is available but not always reliable, with reports of lag or misinterpreted commands on some platforms.

Peak volume is generally more than sufficient for most listeners, with at least one measured test placing it firmly in loud-enough territory without obvious strain.

The earbuds are commonly cited as IPX4-rated for sweat and light rain, but not for heavy water exposure.

The IPX4 rating is adequate for sweat and light rain but not for dunking or heavy water exposure; runners wanting more protection may prefer higher-rated alternatives.

Weight comfort is excellent, with the buds routinely described as lightweight and easy to forget once seated properly.