I got my set this morning. I’ve been using the AP3s and the Pro 2s, but the Pros irritate my ear canals so they only really get used when the AP3s need charging. Now I have the AP4s as well, the Pros will likely be going in a drawer and I’ll use the AP3s as my fallback when the AP4s need charging… which it seems may be fairly often, even with ANC off, the AP4s seem to discharge much more quickly than the AP3s! They also don’t seem to charge as quickly as the AP3s either.
It’s taken me a bit of time to adjust to the sound of the AP4s. The AP3s have more treble so the additional bass of the AP4s makes music seem a bit less detailed and maybe more muffled sounding? That said, they sound pretty much like the Pros, so I’m sure I’ll get used to them.
As a side note, the battery life of my AP3s has been incredible. I bought them at launch and there’s virtually no battery fade, in fact they seem to have better battery life than the brand new AP4s!
In terms of fit, ironically the AP4s might fit slightly less well than the AP3s. Being smaller, the right one definitely feels a bit looser than the left and if I tilt my head and shake it, the bud will fall out. I’ll need to be more careful than I needed to be with the AP3s and Pro 2s.
The ANC is pretty decent, if I crank the volume they can definitely drown out normal surrounding noise, I’d say they’re like 75% of what the Pro 2s do. This is likely a firmware thing, but Conversation Awareness seems more responsive compared to the Pro 2s, but it also much more aggressively reduces the volume to the point I can barely hear the music, which kind of defeats the purpose, it might as well just pause the music if I can’t hear it.
I think my only other criticism would be the lack of volume sliders on the stems. I’m not sure why that is a Pro-only feature, but I guess as these have pretty much everything else the Pros do, Apple had to hold something back (or keep it in reserve for the AP5s! 😂)