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Audio Boost 400% – Smart Volume Max is a powerful and easy-to-use Firefox extension that lets you boost the volume of any browser tab up to 400%. Whether you're watching videos, listening to music, or attending online meetings, this tool gives you precise sound control without needing to adjust your system settings.

Key Features:
- Boost audio volume of individual tabs up to 400%
- Clean, modern user interface with real-time control
- Supports dark mode for night-time browsing
- Lightweight, fast, and privacy-friendly – no tracking, no data collection

Perfect for:
- Watching quiet videos
- Boosting sound on Spotify Web or Twitch
- Enhancing volume during Google Meet, Zoom or webinars
- Users with low-power speakers or quiet headphones

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