Sennheiser Momentum TW4 vs Technics EAH-AZ100 Comparison

Sennheiser Momentum TW4

Each bud has multiple microphones for calls, with processing to reduce wind and background noise. Calls work over standard Bluetooth on phones and laptops. Voice quality is clear in quiet places and acceptable in busier ones, though not a strength compared with business buds. Background noise is reduced, but voices can sound a bit processed in loud spaces.

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.

Sennheiser Momentum TW4

Adaptive ANC adjusts to your surroundings, and a transparency mode lets sound in. There is also an anti-wind mode for outdoor use. Cancellation is good on buses and in offices, cutting steady noise well. Against Bose and Sony flagships it lets more mid-frequency sound through, including voices and keyboard chatter.

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.

Sennheiser Momentum TW4

Sennheiser quotes up to 7.5 hours with ANC on and up to 30 hours in total with the case. A quick charge restores about an hour in minutes. That is fine for a working day with mixed listening, though Sony and Poly last a little longer per charge. Lossless streaming draws slightly more power, so expect a little less when using aptX Lossless all day.

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.

Sennheiser Momentum TW4

The buds are compact with a smooth outer shell, and Sennheiser includes ear tips in four sizes. The water rating is IP54 for dust and splashes. The shape sits fairly flush, so they work while lying back on a headrest, though some find the fit loosens with jaw movement. Touch panels cover much of the outer surface, so adjusting the fit can accidentally pause music.

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.

Sennheiser Momentum TW4

Bluetooth 5.4 supports multipoint, Google Fast Pair and Auracast broadcast audio. Auracast lets you join shared audio streams in airports, gyms and venues that support it, without pairing to each transmitter. The Smart Control app handles firmware, EQ and gesture settings, and LE Audio support should improve over time as more phones and laptops adopt the newer standard.

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.

Sennheiser Momentum TW4

Each bud uses Sennheiser's 7 mm TrueResponse dynamic driver, and Snapdragon Sound supports aptX Lossless, aptX Adaptive, AAC, SBC and LC3. The Smart Control app adds EQ and a Sound Check personalisation tool. The Sony WF-1000XM5 is its closest flagship rival. With an iPhone you get AAC, which is still excellent but loses the lossless advantage that Snapdragon phones enjoy.

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.