Bose QuietComfort Ultra Earbuds vs Sennheiser Momentum True Wireless 4

The Sennheiser MTW4 has good noise cancellation — it'll handle a coffee shop or a quiet office. But the Bose QC Ultra earbuds are what frequent flyers specifically seek out because they kill engine roar in a way the Sennheiser simply doesn't. If you've ever sat on a plane with mediocre ANC and still heard every baby and engine hum, you know this gap is real and it matters.

Bose tunes for a pleasant, consumer-friendly sound — slightly boosted bass, smoothed-out highs. It sounds good. The Sennheiser MTW4 sounds accurate. Instruments have texture, vocals have air, and the soundstage feels wider and more natural. Enthusiast communities on r/Earbuds consistently rank the MTW4 as the top pick for music listening precisely because it doesn't color the sound the way Bose does.

Bose has invested heavily in microphone technology and it shows — the QC Ultra earbuds are consistently ranked among the best earbuds for voice calls, stripping background noise so the person on the other end hears you clearly. The Sennheiser is fine for calls, but if you're on Zoom or phone calls for hours a day, 'fine' is a real downgrade from what Bose delivers.

The Sennheiser app offers detailed parametric-style EQ customization that lets you genuinely reshape the sound signature. If you know what you're doing, you can make these earbuds sound exactly how you want. Bose's app is cleaner and easier to use, but the EQ options are more limited — you're mostly accepting Bose's tuning decisions rather than overriding them.