usb-audio
usb-audio is a HAL (Hardware Abstraction Layer) driver for macOS CoreAudio that enables the system to recognize and route audio to and from USB audio interfaces and external sound devices. HAL drivers are low-level system components that sit between the CoreAudio framework and physical audio hardware, allowing third-party USB audio devices to integrate seamlessly with macOS applications. This driver is installed and managed as part of the system audio infrastructure rather than as a standalone application.
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1 suggestionusb-audio is a system-level HAL driver for macOS CoreAudio, not a standalone app, so it cannot be updated through the App Store or a generic download. The driver is typically installed as part of your USB audio device's manufacturer software package or macOS system updates. If you own a USB audio interface from a hardware vendor (such as Focusrite, RME, MOTU, Behringer, PreSonus, or others), check the manufacturer's website for the latest macOS drivers for your specific device model — they often include updated HAL drivers and must be installed through the vendor's own installer. If this driver came bundled with macOS itself, it will be updated whenever you update your operating system through System Settings → General → Software Update. Given that Apple is removing Rosetta 2 in macOS 28 (September 2028), if you rely on a third-party USB audio device, contact the manufacturer now to confirm they ship native Apple Silicon drivers for your hardware, or consider upgrading to a device from a vendor actively supporting modern macOS.
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