How this changes a diagnosis
A browser usually reaches class-compliant USB audio through the operating system's media/audio stack rather than by directly speaking raw USB to the device.
What to remember
- Standard audio class behavior can reduce the need for device-specific drivers for basic functions.
- Vendor drivers/software may still expose extra routing, DSP or low-latency features.
- A browser audio test checks the browser-visible path, not every ASIO/Core Audio setting used by production software.