Airpod pro sounds blown

One of my Airpod pros (left one) sounds quite blown out when I talk. It does not have a problem when listening, just when I speak. I replaced the right one for the same problem a couple months ago. I purchased a replacement for that one and now the left on is doing it too. I wonder if anyone else is having this issue and/or if this is covered by warranty or is there a way to get them repaired?