Another exclusive feature of Dolphin is its support for Wii's audio and video processing units (APU and GPU). By utilizing the Wii's BIOS files, Dolphin can accurately replicate the console's audio and video processing, ensuring that games sound and look as intended.

Here lies the nuance: Even for the System Menu, Dolphin does not emulate a traditional BIOS. It emulates the Wii’s internal flash storage. The System Menu is just a piece of software that runs on the emulated hardware. To be legally and functionally accurate, Dolphin requires the user to provide a dump of their own Wii’s NAND—similar to a BIOS dump for other emulators. However, this is strictly for the optional Wii dashboard experience. For 99% of game playing (inserting a disc or loading a GameCube/Wii ISO), no NAND and no BIOS of any kind is needed.

While the Wii doesn't use a traditional BIOS file, its core interface is called the .

(Fades to a shimmering dolphin icon above the Wii logo, with "Exclusive" written in small blue text beneath.)

Unlike other emulators that require a single BIOS file to boot, Dolphin uses to simulate the Wii's operating environment without needing external files. However, users seeking an "exclusive" or authentic experience often look for: