Just got mine here in Tokyo.
The first thing I did was load up my "Bass Test" playlist in Apple Music. A big caveat here - I'm coming from Sony WF-1000XM3 and WH-1000XM3, with the Clear Bass turned up to 8 - I like bass, particularly in the 20-80Hz range. I've found quite a few songs over the years with beats or bass lines in that range, and I always test new headphones by listening to those tracks. For example,
Bambro Koyo Ganda by Bonobo - that's an Apple Music link, btw - at about 1:41 this wicked sub-bass line kicks in, and on good headphones it's amazing. Cheap headphones/speakers? You can't even hear it. Another sort of asterisk - I have a cold ATM, which is probably affecting my hearing a little.
The good news is, the AirPods Pro can handle the bass, BUT it's far more 'polite' than I'm used to. The bass is there, but it's a lot more subdued, compared to the Sonys. Again, the Sony WF-1000XM3 and WH-1000XM3 can be adjusted to be very bass-heavy - still clean, and not overpowering, but yeah - they can be tailored to fit the sound you're looking for. Their bass, when EQ'd, is definitely much stronger than the AirPod Pro. The soundstage on these AirPods is fairly wide, for earbuds, and the highs are clear and smooth. The mids are a bit more forward than I'm used to, but that might just be because I'm running on flat EQ whereas my WF-1000XM3s are on a custom EQ.
ANC is good, not quite as effective as Sony's implementation but still pretty good.
Traffic noise is basically non-existent with ANC enabled and music playing, and train noise is gone, too. I can still hear the occasional outside sound (the woman sitting next to me on the train just turned the pages of a magazine and I heard it, a bit, but then I didn't hear it at all when she put the magazine in her bag before getting off the train) but it's FAR better than the original AirPods - I stopped using the AirPods (still have the 2nd gens in my bag) because I was
so tired of all the ambient noise coming through. The AirPods Pro definitely take care of that.
If anyone has any specific questions, I'll do my best to answer them.
edit: here's a link to my
bass test playlist on Apple Music, if anyone wants to give it a spin. All different genres, but most of the songs have a solid <100Hz bass line or occasional beat, that makes them good for testing headphones and speakers. Even Triste by Elis Regina - that one's Bossa Nova and just has an acoustic bass, but it thumps.
edit2: I've managed to get a bit more bass out of the AirPods Pro by changing the
EQ from Off to Latin. That preset seems to boost the low end, drop the mids a bit (takes care of them being a little too forward) and leaves the high end intact, or slightly increased. Sort of a shallow "V" shaped EQ, to my ears. I then reduced my Sony WF-1000XM3 bass boost from 8 to 3, to compensate, and both headphones sound good now.
The AirPods Pro still lack the punch of the Sonys in the <100Hz range, but it's better than before. ?