How does the Audi R8's 4-wheel drive system work?

I've heard that the Audi R8 has a unique four-wheel drive system, but I'm not sure how it works. Can you explain it to me?

The Audi R8 utilizes a permanent all-wheel drive system that evenly distributes power between the front and rear axles. This results in improved traction and overall handling, especially in adverse weather conditions.

The R8's all-wheel drive system incorporates a mechanical self-locking centre differential, which monitors the transfer of torque between the front and rear wheels in real-time to provide optimal traction and stability. Additionally, an electronically controlled rear differential can send power to a single rear wheel if needed for better handling.

Unlike traditional all-wheel drive systems, the Audi R8's system is rear-biased, which means it sends more power to the rear wheels for a sportier driving experience. This design also allows the car to maintain its rear-wheel drive characteristics while still benefiting from the added grip of all-wheel drive.