Because it only needs a modern browser, this tool works the same on Windows 11, Windows 10, and most older supported versions.
If you use Windows' built-in Spatial Sound or a manufacturer's audio-enhancement suite, try switching those off while testing this equalizer — layered processing from multiple sources can produce unpredictable results.
Windows 11's redesigned sound settings and Windows 10's classic Sound Control Panel both sit underneath the browser and don't interfere with this tool directly — what matters is your default playback device's own enhancements, which are worth checking in either version.