Bose QC Ultra Earbuds vs Technics EAH-AZ100 Comparison

Bose QC Ultra Earbuds

The second generation brought upgraded microphones and processing for calls, one of the main complaints about the first model. The mics focus on your voice and reduce surrounding noise and wind before the signal reaches the phone. Unlike many business earbuds, they ship without a USB adapter for laptop calls.

Technics EAH-AZ100

Voice Focus AI uses multiple microphones and processing to isolate your voice from background noise. Technics trained the algorithm to recognise voice versus ambient sound. For hybrid workers, this makes them a credible alternative to business-focused earbuds, especially when paired with three-device multipoint and a laptop that stays connected all day.

Bose QC Ultra Earbuds

Bose's ActiveSense ANC is among the strongest in any earbud. It removes engine drone and air-conditioning hum, and does better than most rivals with voices and office chatter. Aware mode lets sound in naturally, and ActiveSense reduces sudden loud noises while staying in Aware. That is useful on city streets.

Technics EAH-AZ100

Adaptive hybrid ANC uses feedforward and feedback microphones to adjust to your surroundings and fit. An ambient mode is available for conversations and announcements. Noise cancelling is strong across low and mid frequencies, removing engine hum and office chatter effectively. It is not quite as aggressive as the best from Sony and Bose, but it remains well above average.

Bose QC Ultra Earbuds

Bose quotes about 6 hours of listening per charge, or about 4 hours with Immersive Audio, and the case adds roughly three more charges. That is enough for most flights and workdays, though Sony and Poly last longer per charge. Immersive Audio is the main battery drain, so switch it off on long trips and save it for films.

Technics EAH-AZ100

Technics rates up to 10 hours with ANC on using AAC, and 28 hours with the case. LDAC reduces that to 7 hours per charge and 18 hours total. Ten hours with noise cancelling on is excellent and covers a full workday of calls and music. The case supports Qi wireless charging and USB-C.

Bose QC Ultra Earbuds

The buds are larger than most, and they use ear tips plus stability bands in three sizes to hold them in place. The water rating is IPX4, which covers sweat on a run and rain on the way to the station, but not a drop into water.

Technics EAH-AZ100

Technics lists roughly 5.9 g per earpiece and redesigned the shell to be smaller and more ergonomic than the AZ80, with multiple tip sizes included in the box to suit different ear canals. They sit securely for long sessions and seal well, which helps both bass response and noise cancelling.

Bose QC Ultra Earbuds

Bluetooth 5.3 brings two-device multipoint and Google Fast Pair, and aptX Adaptive kicks in on compatible Snapdragon phones. Switching from a laptop call to a phone call happens without re-pairing. Bose says the second generation has a more stable connection, especially in crowded places such as stations and airports. Bose offers no USB adapter and no meeting-platform certification for these buds.

Technics EAH-AZ100

Bluetooth 5.3 supports SBC, AAC, LDAC and LC3. Multipoint connects up to three devices at once, which is rare among earbuds. Three devices means a laptop, a phone and a tablet can stay connected together, and the buds switch to whichever one starts playing. That is a big advantage for people who move between work and personal devices.

Bose QC Ultra Earbuds

CustomTune plays a chime when you put the buds in, measures your ear canal and adjusts EQ and ANC to match. Bose's Immersive Audio adds a spatial mode with Still and Motion settings. The tuning is warm and full, with strong bass and smooth highs. On Snapdragon Sound phones aptX Adaptive improves quality, while iPhones use AAC.

Technics EAH-AZ100

Each bud uses a 10 mm Magnetic Fluid Driver, a design Technics brought over from its high-end headphones. The fluid around the voice coil reduces distortion and allows more precise control of the diaphragm. LDAC support lets Android users stream higher-resolution audio, and Dolby Atmos adds spatial playback. They compete directly with the AirPods Pro 3 at the premium end.