Sound Booster is a subscription-based Chrome extension designed to significantly enhance audio levels during video playback. It allows users to increase the volume up to 600%, providing an immersive viewing experience, especially in fullscreen mode. This tool is particularly useful for those who find standard volume levels insufficient for their multimedia needs.

Ideal for watching movies or videos where sound clarity is crucial, Sound Booster integrates seamlessly with the browser, ensuring that users can enjoy their content without interruptions. The extension is categorized under Multimedia and Graphic & Design, making it a valuable addition for anyone looking to improve their audio experience while using Firefox.