I have been able to trigger it when fumbling around with adjusting the fit. If I run my finger over the top of the body I can get a brief squeal out of them. Happened just a few seconds ago. I also have noticed on multiple occasions that if I take them both out of my ears and cup them in the same hand, they squeal audibly enough to hear faintly from a couple feet away. The skin contact sensor is very sensitive.

However, unlike a lot of other commenters in this thread, I feel like the APP3 are a huge leap forward from the APP2 and have had zero regrets with the upgrade (other than the forced iOS 26 upgrade, but I feel like that's inevitable anyway.) They stay in much better, the fit is more comfortable, the battery life is better, the ANC probably drops background noise another 10db subjectively, and most of all, the sound quality is absolutely stellar. I have owned several midrange headphones and a portable DAC and I find myself preferring the AirPods over them. I haven't worn my Sennheisers since I got the APP3.

The horrible thumping is purely a fit issue. The solution to the thumping when running is to either size down the tips or to slightly dislodge the tips from your ear.

It’s not ideal, I’ll grant you that.

While we may have some overlap in issues, I would say that the Airpods Pro 3 are incredible. I’ve ditched my Airpods Max entirely. The noise cancellation works too well, the sleep detection is a godsend, and the battery life is so good. I use my airpods to sleep. before, i’d always wake up to dead airpods. now, they have like 70% batteries when i wake up, because the sleep detection kicks in.

> incorrectly identifying vibrations from heel strikes as loud noise

You should be thankful you get a free reminder to stop heel striking

/uj figured a little running BS hear could be fun

>I have this happen outside of flights. Cupping your finger over the ANC mic is enough to trigger it.

It's some kind of feedback. For some reason though I don't remember the first model having the issue.

I've been able to get this same issue when I am laying in bed and lay on my side where my APP rub against the pillow. I've been able to reliably make the screeching sound by putting one airpod in my hand and tumbling it around or opening and closing my hands.

I still love my APP3, and still have my APP2, but have not made a change back to them. I think they feel so much better in my hear with the new tips, and sound way better.

You’re holding them wrong.

I find it interesting you describe the issue like that. I had my airpod pro 1st gens go out on me in a way that was very similar to that, with the popping noises as you walk and move around. I figured out that when I put them in “normal mode” i.e., totally disabling the noise cancellation microphone, it mostly went away. I just figured something had happened to/with the external microphones and/or the noise cancellation processing was not happening correctly. It was basically impossible to test this theory I had, but I wondered if it was an update that introduced a bug.

I can’t recall now at this point, but I do recall the feeling that the different ways I played with and tested to understand the cause and symptoms of the noise, left me with a feeling that it was not a physical/hardware issue.

I suspect Apple even knows, with as many problems they’ve had with the AirPod pros; but that’s another story… when they had to replace mine one bud at a time, about 6 complete sets, i.e., over about 10 replacements or so… during the pandemic nonsense.

I'll say, I recommend my Honeywell sync earmuffs for the workshop. They block more noise, have a physical volume knob and accessible buttons, and best of all, the microphone is also noise cancelling directly, meaning you can usually have a conversation with someone while using a power tool or mowing the lawn without much issue. APP2 or 3 for me has never been able to displace these.

Are you sure that the perceived reduction in noise corresponds to a reduction in damaging sound pressure levels?

I know about destructive interference in theory, but was always curious about the perceptual vs real SPL.

Whenever I’ve tried ANC (Bose) it’s always hurt my ears, even when quiet.

I feel a bit the same. I rushed out to upgrade for the better noise cancelling, apparently better mic quality and live translation feature.

All three have been a miss. Noise cancelling is much the same and seems to leak higher pitch noises more. Mic is more or less still bad and the live translation only works in doors in a quiet room.

And I resent the upgrade to 26 and all of the bugs like phantom notifications.

They’re still good ear buds and the noise cancelling is valuable but I shouldn’t have made the upgrade from the 2 pros.

Ahh lastly, it seems the case battery depletes much faster now too.

100% agree with the required update to 26, I was hugely bummed when I discovered I had to update my devices to pair them.

I've had the opposite experience with noise cancelling though, the APP3 feel like magic when I'm working with power tools - better than any other (passive) ear protection I've tried in Noise Cancellation mode, and still enough protection in Transparency mode that I can use my circular saw without any discomfort. I did experience a little of what you're mentioning the other day, but only when my Airpods (and head) were close to the tool. I thought it might be back EMF.

I have no complaints with my APP3 other than the forced iOS upgrade. I feel like they fit much better than the APP2, I have had far fewer incidences of them working their way out. And sound quality is a huge leap forward IMO. Best IEMs I have ever heard.

Anecdotally, my APP3 have worked much better then expected when I worked with a drill and jigsaw this weekend. No weird noises and much more NC than the 2 had.

Might be worth trying different ear tips or asking for a replacement if software updates don’t improve it.

you need to stay up to date to protect against 0 click hacks in the wild

hearing aids, in general, have the some problems and they operate on similar principles - sound is isolated physically, and the outside world is transmitted digitally to the ear/ANC when needed.

I feel like I'm in-between sizes or something. The medium Apple eartips are more comfortable but tend to sit farther out of my ear canal and feel like they're working their way out. The small eartips stay in more securely, but sit uncomfortably far into my ear canal and lose seal when talking or putting my head in certain positions. I eventually settled on the mediums and have become accustomed to the feeling of them "falling out" even when they're not.

But yes, odd to hear that other people also have issues with the left ear fit, because they must be identical shapes. I wonder if human physiology averages to the left ear being smaller or something. Although I feel like the right ear falls out more easily if I switch to the small tips...

I had a fit issue with Airpods Pro 2 in my left ear. It would always pop out after 20 minutes of rowing. I tried different ear tips, but none of them really worked. ANC is only medium-important to me, so I'm using Airpods 4 with ANC.

Concurring with sibling, AZLA does make good aftermarket tips. I have my Airpods Pro 2 in my work bag and still use their "crystal" tips.

Weirdly, I have fit issues in my left ear, too, like others. Very odd.

Exact same issues here with my APP3s. (Except it's my right ear)

I've never had in-ears that use the same size tips. I always just assumed I was the oddball with weirdly mis-sized ears, but I'm pretty sure everyone has it to some degree and just always accept one subpar fit rather than use differently sized tips.

Wow you fly a lot! These things are out what, 2 months? :O

Doesn't that get exhausting? I used to have a job where I'd be on a plane every week and I couldn't hack it. It's supposed to be liberating to travel but basically just seeing the inside of a plane, taxi, meeting room and hotel room every day it was more like a moving prison. Sometimes I'd sneak out to walk through these strange places. But often I'd be forced to attend boring business dinners.

My last business flight was in 2018 and I don't miss it at all :) I even cancelled my corporate amex since I never use it anymore. And these guys keep asking for copies of ID and stuff for tax records or something (completely stupid because yes I'm still the same person duhhh) so in the end I just rolled my eyes and told them to stuff it where the sun don't shine :P

None of the Apple tips work for me, they all leak outside noise and slip out of my ears. I've tried nearly every 3rd party tip on the market, the AZLA ones are the best but with caveats. The Xelastic tips [0] provide the best comfort, noise cancellation and stay in your ears perfectly, but they wear out and become too soft quickly - like every two to three months. The Max tips [1] are durable, stay in properly, and are so comfortable it's easy to forget you have ear buds in. They're not so great at the noise cancellation though so I tend to use these as my every day tips and swap them for the Xelastics when I'm going on a flight or somewhere where the ANC is more important. I haven't tried the Crystal ones yet.

[0] https://store.azla.co.kr/collections/sednaearfit-series/prod...

[1] https://store.azla.co.kr/collections/airpod-pro-ear-tips/pro...

Edit: I didn't know the Crystal ones existed until posting this, so ordering some now to see if they're the best of both worlds. If I remember, I'll report back.

An even wilder guess: the speed of sound varies with air density.

https://en.wikipedia.org/wiki/Speed_of_sound#Altitude_variat...

If they were calibrated assuming a certain distance from the microphone that "hears" what the wearer's ear is hearing and the ear itself, then it's possible a change in air density could position the area of highest constructive interference at the eardrum instead of the intended destructive interference for some frequencies.

Sounds like you are stating https://en.wikipedia.org/wiki/Barkhausen_stability_criterion (1921):

"if A is the gain of the amplifying element in the circuit and β(jω) is the transfer function of the feedback path, so βA is the loop gain around the feedback loop of the circuit, the circuit will sustain steady-state oscillations only at frequencies for which:

1: The loop gain is equal to unity in absolute magnitude, that is, |βA|=1, and 2: the phase shift around the loop is zero or an integer multiple of 2π: ∠βA=2πn,n∈{0,1,2,…}"

I just had a thought, it's possible to completely disable ANC in settings, turning them into "dumb" bluetooth headphones. (Enable "Off Listening Mode" in Airpods Settings and the option will become available in Control Center.) If some of us who are able to replicate this effect consistently could try turning ANC off and seeing if the effect still occurs, that would narrow it down to being feedback related from Transparency/ANC or being something external like back EMF.

I just tested this myself and the two ways that I am able to get consistent squealing (stroking the upper body when in-ear and cupping them in the hand) both fail to replicate when ANC is off. So this does point to a feedback issue.

My other thought is that the APP3 may have microphones located next to the drivers in the ear canal, both for measuring fit, and for the new "own voice amplification" feature that appears in hearing control center if you enable Hearing Assistance. Maybe vibration is leaking through the body to the inner microphone.

That doesn’t explain why the issue seems to be specific to left APPs.

> I've never much got on with in-ear rubber tips,

That's a shame since it's literally impossible to get that deep sub bass or punchy mid bass without a seal. But if you're not into genres that sound better with that, then you probably wouldn't be able to tell the difference.

> This means if you're using small tips, there's a lot of spare room, which means the AirPods can easily be mis-seated, breaking the charge connection.

I've used many headphones - probably upwards of 10 pairs cross 5 brands - in my day with rubber tips that can accommodate multiple sizes. This has never been a problem for me with any brand. I've switched to open ear headphones (over-ear for flights) since last year so my knowledge base is aging.

Is the magnetic action in Apple's case not strong enough, maybe?

I discovered another way to remove this problem - Initiate a screen recording and it's gone. I was doing this to report a TestFlight app bug on a flight I was experiencing and wow did the ANC improve so much.

The acoustic importance mismatch may result in the wrong gain?

In which ear(s)?