Bang & Olufsen Beo Grace VS Technics EAH-AZ100

Both the Bang & Olufsen Beo Grace and the Technics EAH-AZ100 share the same fundamental design philosophy: a true wireless, in-ear form factor with no neckband, no RGB lighting, and no display. At 12 g and 11.8 g respectively, the two earbuds are essentially identical in weight — a difference of 0.2 g is imperceptible during real-world use, meaning neither product holds a meaningful ergonomic advantage on that front.

The most significant differentiator in this group is water and dust resistance. The Beo Grace carries a dual rating of IP54 and IP57, which translates to full waterproof protection — it can withstand submersion in up to 1 meter of water for 30 minutes, in addition to being dust-protected. The EAH-AZ100, rated at IPX4, is only sweat and splash resistant, with no rated dust protection at all. In practical terms, this means the Beo Grace can handle rain, accidental drops in water, or use near a pool, while the Technics is better suited strictly to dry workouts and light perspiration.

For users who prioritize durability and versatility across varied environments, the Beo Grace holds a clear edge in this group purely on the strength of its superior ingress protection. The Technics EAH-AZ100 is adequate for everyday gym use, but it cannot match the robustness that IP57 certification provides.

On the fundamentals, these two earbuds are well-matched: both offer active and passive noise cancellation, spatial audio support, and neodymium-class driver technology. The divergence begins with driver size — the Beo Grace uses a 12 mm driver versus the EAH-AZ100's 10 mm unit. Larger drivers generally move more air and tend to produce a fuller low-end response, which aligns with the Beo Grace's lower frequency floor of 10 Hz compared to the Technics' 20 Hz — meaning the Beo Grace can technically reproduce sub-bass frequencies that the EAH-AZ100 simply cannot.

At the opposite end of the spectrum, the EAH-AZ100 reaches up to 40,000 Hz, well beyond the Beo Grace's 20,000 Hz ceiling. While human hearing typically tops out around 20 kHz, the extended high-frequency range becomes relevant when playing hi-res audio formats like LDAC or aptX Lossless, where ultrasonic content can still influence perceived audio texture and airiness. The EAH-AZ100 also supports Dolby Atmos, a certified spatial audio pipeline that offers a more standardized and widely compatible immersive experience than an uncertified spatial audio implementation.

The two products target slightly different listener profiles. The Beo Grace edges ahead for bass-focused listening and raw frequency depth, while the EAH-AZ100 has the advantage for hi-res and home theater content thanks to its extended high-frequency range and Dolby Atmos support. On balance, the EAH-AZ100 holds a modest edge for technical audio versatility, but users who prioritize deep bass reproduction may find the Beo Grace more satisfying.

Battery life is where these two earbuds diverge most starkly. The Technics EAH-AZ100 delivers 10 hours of playback with ANC active, while the Beo Grace manages just 4.5 hours under the same conditions — less than half. In practical terms, the EAH-AZ100 can comfortably cover a full workday of listening without a recharge, whereas the Beo Grace will need to return to its case mid-afternoon. For frequent travelers or long-session listeners, this gap is genuinely consequential.

The charge time picture is more nuanced. The Beo Grace replenishes in 1.4 hours versus the EAH-AZ100's 2 hours, meaning it charges meaningfully faster — a partial consolation for its smaller battery. Both support wireless charging, which adds convenience for users who prefer a pad over a cable, and both include a battery level indicator so neither leaves you guessing about remaining runtime.

The EAH-AZ100 holds a decisive advantage in this group. A more than twofold difference in ANC battery life is not a marginal gap — it reflects fundamentally different use-case priorities. The Beo Grace's faster charge time softens the blow slightly, but for any user who values all-day untethered listening, the Technics is the clear choice here.

The connectivity foundation is largely shared: both earbuds run on Bluetooth 5.3, support LE Audio, top out at a 10 m wireless range, include USB-C charging, and offer AAC codec support. For most users pairing with a smartphone, this common ground means day-to-day wireless performance will feel essentially identical between the two.

The meaningful split comes down to two features. The EAH-AZ100 supports LDAC, Sony's high-resolution wireless codec capable of transmitting up to 990 kbps — nearly three times the bandwidth of AAC. For Android users with LDAC-enabled devices and hi-res audio files, this translates to a noticeably richer and more detailed audio stream. The Beo Grace lacks LDAC entirely, capping wireless audio quality at AAC. Additionally, the EAH-AZ100 includes fast pairing, which streamlines the initial device connection process — a small but genuinely convenient quality-of-life advantage the Beo Grace does not offer.

The EAH-AZ100 holds a clear edge in connectivity. LDAC support alone is a significant differentiator for Android and hi-res audio users, and fast pairing adds further convenience. The Beo Grace is not deficient in absolute terms, but it offers a narrower codec palette that leaves high-fidelity wireless streaming on the table.

Across this feature set, the Bang & Olufsen Beo Grace and the Technics EAH-AZ100 are remarkably well-aligned. Both offer ambient sound mode, fast charging, on-device controls, voice prompts, a mute function, headset capability, and an included travel bag. For the vast majority of everyday use cases, the two earbuds deliver an effectively identical feature experience.

The single differentiator in this group is multipoint connectivity. The Beo Grace supports 2 simultaneous device connections, while the EAH-AZ100 supports 3. In practice, multipoint allows users to stay connected to multiple devices — say, a laptop and a smartphone — without manually re-pairing when switching. A third simultaneous connection is a meaningful upgrade for power users who regularly juggle a computer, phone, and tablet, allowing seamless audio handoff across all three without any pairing management.

Given how closely matched everything else is, the EAH-AZ100 holds a narrow but real edge here, solely on the strength of its three-device multipoint support. For single-device or two-device users, this distinction is irrelevant and the products are effectively tied — but for multi-device workflows, the Technics offers a tangibly more flexible experience.

On microphone hardware, the Bang & Olufsen Beo Grace and the Technics EAH-AZ100 are identical: both deploy 6 microphones with noise-canceling capability. A six-mic array at this earbud tier is a premium configuration — more pickup points allow the signal processing to more precisely isolate the user's voice from surrounding noise, which benefits both ANC performance and call clarity in louder environments.

With no differentiating data points in this group, a verdict based solely on the provided specs is straightforward: these two earbuds are fully tied on microphone hardware. Neither holds any advantage over the other as specified here.