Airpods Pro 3 - low frequency sound leak in noise cancellation mode

Hey Team,


I've been using the new AirPods Pro 3 for some days now (model number A3063) and everything has been good and smooth up until now. As of today, when I put the headphones in "Noise Cancellation" mode and I am in a cafe where there is background music playing, all of a sudden the noise cancelling doesn't "cancel" the low frequencies anymore. Furthermore, I get the feeling that the low frequencies are even "enhanced" as if the headphones are adding additional bass to the "outside" music. The sound level of the outside music is pretty low (more like background music) so we are definitely not talking about loud sound source being blasted into the headphones.


This behaviour is sporadic, so if I try putting the headphones back in the case and then back on, sometimes the issue disappears and the outside low frequencies are blocked just fine. I've tried switching between modes when the issue is present, however this doesn't change anything. I am also using the headphones in Noise Cancellation mode, not Adaptive, and I got all Adaptive Audio, Personalised Volume and Conversation Awareness turned off. I've also tried changing tips, but that's not it either.


The AirPods Pro 3 are running the latest 8A357 firmware and I am running iOS 26.0 on an iPhone 16 Pro.

Does this sound like a software bug or could it also be hardware related? Any advice would be much appreciated.


Thank you in advance!

AirPods Pro 3

Posted on Sep 26, 2025 3:34 AM

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Posted on Feb 25, 2026 11:02 AM

Given the sporadic nature of the issue and the "enhanced" bass sensation, this sounds like a firmware-level phase-shift error or an internal microphone calibration bug rather than a simple fit issue. Because the ANC algorithm is failing to invert the low-frequency waves correctly—and is instead inadvertently reinforcing them—the hardware is likely experiencing "constructive interference" where it should be cancelling sound. Since you have already ruled out physical fit and toggled all Adaptive Audio settings, the next step is a full factory reset (holding the case button for 15 seconds until it flashes amber); if the "leak" persists after a reset on firmware 8A357, it points to a defect in the inward-facing microphone or the H3 chip's processing, warranting a hardware replacement under warranty.

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71 replies

Nov 13, 2025 9:41 PM in response to Ptkbp

Just a quick update. I have installed all the recent firmware updates, however the issue persists. I have taken these on a plane recently. Taking the buds off fixed the issue momentarily (about 3-5 minutes) before the low frequency leak came back. Still hoping for future firmware updates to work, otherwise might need to get a replacement unit.

Aug 4, 2026 12:30 PM in response to EhsanTlb

Please refrain from copy-pasting ChatGPT slop here. It looks smart by using complicated words but doesn't actually bring any value as people come here to discuss an issue with other users and not bots. Especially since this is clearly incorrect information as the H3 chip does not exist and that can be verified in a few seconds by opening the Apple specs page here...

Airpods Pro 3 - low frequency sound leak in noise cancellation mode

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