Increase or decrease the volume of the start-up sound on your Mac if it's too loud or quiet. Restore default sound parameters if you're not satisficed with the changes. Perform a test to check if your Mac is compatible with the app by installing an extra component.
The Calm is a program that can reduce or silence the startup sound volume of your Mac. It also allows you to restore the sound volume after startup, or set the volume to your desired level. This program lets you start your Mac in silence, so you can begin your work peacefully. We have developed a "Calm Tester" to check if the Calm works with your Mac. You can download it for free from the "Download" page on our support page.
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