AirPods (3rd generation) feature a custom driver as well as a dynamic frequency amplifier, which together produce powerful bass and clear treble.
AirPods (3rd generation) use Adaptive EQ technology, which adjusts the sound in real time, depending on how the AirPods fit when you wear them. An inward-facing microphone monitors the sounds and then Adaptive EQ, with the help of electronic processing, adjusts the low and mid frequencies to make up for any losses due to variation in fit in your ear.
Spatial Audio technology creates a three-dimensional, movie theatre-like audio experience, delivering sound anywhere in the room. Combined with Dolbie Atmos technology, the new AirPods have the best sound ever. This layered listening experience is made even more vivid with dynamic head position sensing. Sophisticated algorithms and directional audio filters give AirPods the ability to vary the frequencies each AirPod receives, and position the sound around you.