I took the best Bose and Sony earbuds to 3 noisy places to see which cancel out the most noise

So, you need a pair of ANC earbuds. Recommendations usually start with the pairs that match your smartphone: AirPods, Pixel Buds, Galaxy Buds, OnePlus Buds, or Moto Buds. If you opt for a pair of ANC earbuds from a trusted audio brand instead, you're likely choosing between Sony and Bose. I've used both the Sony WF-1000XM6 earbuds and the Bose QuietComfort Ultra Earbuds (Gen 2) for months, and they're the best of the best when it comes to active noise-cancellation power.

But there can only be one best. So, I decided to take the flagship Sony and Bose earbuds to three noisy places to see how each one cancels out unwanted sound. This isn't a lab test or a benchmark — it's a real-world showdown that reflects how the Sony WF-1000XM6 earbuds and the Bose QuietComfort Ultra Earbuds (Gen 2) perform in everyday scenarios. While it was close, there was one pair of ANC earbuds I consistently preferred for its ANC power.

How the specs compare

The Bose QuietComfort Ultra earbuds (Gen 2) use eight onboard microphones — four per earbud — to cancel out sound. Bose is using new AI-powered algorithms for active noise cancellation, but we don't know the specifics. The Sony WF-1000XM6 also has eight microphones split evenly between the two earbuds. Sony uses a custom QN3e processor for noise cancelation, and it's said to be 3x faster than its predecessor.

For this test, I took the Bose and Sony earbuds to loud places and tested their ANC performance. I placed the earbuds in my ears and listened for active noise cancellation without any music playing. Then, I raised the volume to a modest 50% and started playing music to see how environmental noise is perceived at a comfortable listening level.

This test is purely gauging the earbuds' ANC chops. It ignores sound quality, battery life, call quality, and other features, but every detail is covered in our full reviews of the Sony WF-1000XM6 and the Bose QuietComfort Ultra earbuds (Gen 2).

I wore Sony and Bose earbuds in a noisy coffee shop

The first place I took the Sony and Bose earbuds to was my local coffee shop. I'm regularly working from a cafe, and it's a great environment. Good vibes, superb lattes, and free Wi-Fi. The one problem every digital nomad has run into is the noise. Loud espresso machines, constant chatter, and noisy foot traffic can quickly lead to distractions. The obvious solution to this issue is a pair of ANC earbuds, and that's why I brought the WF-1000XM6 and the QuietComfort Ultra earbuds (Gen 2) along with me.

Active noise cancellation works best with consistent noise, which is why environments like a coffee shop can trip up ANC earbuds. Sudden bursts of loud conversation or intermittent machinery can pierce the ANC barrier. When I wore the QuietComfort Ultra earbuds (Gen 2) without music playing, most background noise and the radio music turned to silence. However, I could still hear laughter, the espresso machine screeching, and chairs sliding around.

I then switched to the WF-1000XM6, but Sony's earbuds struggled to cancel out the mid-frequency environmental noise. Without music playing through my earbuds, I could still hear the music from the overhead radio speakers and make out nearby conversations. Interestingly, the high-pitched sounds that broke through Bose's ANC bubble were suppressed by the Sony earbuds.

Starting to play music through each pair of earbuds at 50% volume made their flaws virtually indistinguishable. With music playing, the Sony WF-1000XM6 blocked out nearly all audible background noise. The same was mostly true of the QuietComfort Ultra earbuds (Gen 2), except for lighter tracks with strong vocals and minimal production.

In this test, I preferred the ANC power of the Bose earbuds. I really didn't like that the Sony earbuds did little to block out the chatter and background music in the coffee shop, which can be distracting.

I wore Sony and Bose earbuds under a rumbling AC unit

Your air conditioning unit might be producing the loudest sound in your home. I live in the Arizona desert, so my AC is running almost nonstop this time of year. Using a sound measurement tool, I recorded my AC's noise level to be 60 decibels. That's quite loud, so I sat right underneath my air conditioner and put the Bose and Sony earbuds in my ears. These low-frequency hums and rumbles coming from your AC unit pose a challenge for even the best ANC earbuds.

Both earbuds nearly canceled out the AC unit's loud noise, but the QuietComfort Ultra earbuds (Gen 2) did a better job. While the Sony WF-1000XM6 made the noise less irritating, it was still there. The Bose earbuds, by comparison, made the AC unit sound silent — even without music playing. After choosing a song and setting the volume at 50%, neither pair of earbuds had a problem blocking out the annoying rumble of my air conditioner.

In this test, the win goes to the Bose QuietComfort Ultra earbuds (Gen 2). Based on the results of the first two tests, it seems like the Sony WF-1000XM6 isn't quite as good at negating low- and mid-frequency sounds.

I wore Sony and Bose earbuds throughout a crowded shopping mall

For the final test, I took the Bose and Sony earbuds to the loudest place I could think of: a crowded shopping mall on a Friday night. I walked through a supermarket, a food court, and the concourse to get a feel for how each pair of earbuds responded to the noisy environments. Unlike the first two tests, which relied heavily on low- and mid-frequency background noise, the most challenging sounds to cancel out here were in the high-frequency range.

Sony's WF-1000XM6 earbuds actually did a better job blocking out the conversations and chatter around me in the wall, and I have a hunch as to why. There was so much talking going on that all the voices blended together into a kind of white noise the Sony buds easily canceled out. This could be why the WF-1000XM6 stopped voices in their tracks here, but didn't perform as well in the less-crowded coffee shop.

In the food court, the Sony earbuds' ability to block out higher-end sounds shined. The sizzle of frying pans and the clanking of utensils were mitigated by the WF-1000XM6, whereas they were much easier to hear through the Bose earbuds. Even at 50% volume, I could still hear some of those high-pitched noises while wearing the QuietComfort Ultra earbuds (Gen 2).

The two pairs of earbuds didn't stand a chance at canceling out the infrequent PA announcements in the food court, but this isn't surprising. Overall, the Sony earbuds won in the mall. The chatter all blending together, paired with the high-pitched nuisance sounds, gave the WF-1000XM6 the perfect environment to put its ANC strengths on display.

Verdict

Looking back on my week of ANC testing both the Bose and Sony earbuds, the winner on paper seems clear. More often than not, the Bose earbuds canceled out noise better than the Sony earbuds. Still, I'm not ready to write off the Sony WF-1000XM6 earbuds. I actually enjoyed wearing them for active noise cancellation more than the QuietComfort Ultra earbuds (Gen 2), because the Sony earbuds are decidedly more comfortable.

They're smaller, and don't make as tight of a seal in your ear as the Bose earbuds. Perceived ANC power has as much to do with passive sound isolation as it does active algorithmic cancellation. The very reason the QuietComfort Ultra earbuds (Gen 2) performed well might also be the reason I wanted to pull them out of my ears during longer listening sessions. While I found the Bose earbuds canceled out more noise on most tests, I'd reach for the Sony earbuds for their comfort anyway.