The AirPods Pro 2nd Generation are powered by the H2 chipset, which is the latest generation of Apple's custom-designed chips for wireless earbuds. This chipset provides a powerful and efficient platform for the advanced noise-cancellation and spatial audio features of the earbuds. The H2 chipset is specifically designed for low-power consumption, which means the AirPods Pro 2 can provide up to five hours of listening time on a single charge. Additionally, the chipset features an advanced signal processing system that optimizes the audio quality for a more immersive listening experience. With the H2 chipset, the AirPods Pro 2 can deliver high-quality audio with greater efficiency, making them a top-of-the-line choice for wireless earbuds.