La cuarta generación of AirPods ingresan the H2 chip which is promising better microphone quality as well as better environmental noise cancellation. While it’s safe to assume that AirPods Pro 2, which also features the H2 chip, have even better microphones due to the higher price, Economically speaking, Airpods 4 should still represent a significant step in terms of microphone performance comparing to AirPods 2 and 3.