When did you replace yours Pro last time? I bought AirPods Pro at launch and have exactly the same problem. Slight cracking sound at high volume in the left pod. Not consistent, just in some songs with deep bass. I let it go, thinking I want too much from earbuds. But then it became really annoying and I’ve replaced left one with no problem in the store after about 8 months. With the new left pod I’ve noticed that right has the same issue, just more subtle. Replaced that one and since then all was fine. I’ve read that many complained about it, but I guess Apple fixed it. So even if this was rushed, which does feel like that, I have all confidence if you have any issues Apple will replace the whole unit with no extra cost. It is no good to lose some time waiting for the replacement, but in return you get a brand new battery in the unit.