Apple has introduced AirPods Max, a new over-ear headphone with high-fidelity audio, Adaptive EQ, Active Noise Cancellation, and spatial audio. The headphones are available for order starting at $549 and will begin shipping on December 15. AirPods Max feature a custom acoustic design and a digital crown for controlling audio and noise cancellation. They also support automatic switching between Apple devices and audio sharing with other AirPods or Apple devices.