Low-end enhancement
Free Online Bass Booster
Boost bass in dB for music, podcasts, sound effects, and voice recordings that feel thin. Preview the result and export locally with browser-based FFmpeg.
Useful for private demos, rough mixes, and unreleased files because the source audio stays on your device.
Uses FFmpeg bass filtering focused on low frequencies instead of rough EQ approximations.
A fast way to add weight or reduce muddiness without opening a full DAW.
Drag & drop audio here, or click to upload
Supports MP3, WAV, M4A, FLAC, OGG, AAC, and more
How to use the Bass Booster online
- 1.Upload an audio file and let the browser read its duration and sample rate.
- 2.Set the bass gain in dB to add body or reduce boominess, then preview the result.
- 3.Choose MP3 or WAV export, process the file in the browser, preview the result, and download it.
Why use this Bass Booster?
Helpful for thin recordings
Add more body to phone captures, scratch demos, sparse music exports, or lightweight voice tracks.
Private browser workflow
FFmpeg runs locally on your device, so source files stay off external servers during processing.
Flexible output
Export MP3 for quick sharing or WAV if you want to keep editing the result afterward.
Common use cases
- •Add more weight to a podcast intro or spoken voice track.
- •Give a thin demo mix more low-end before client review.
- •Make sound effects and impacts feel fuller for video work.
- •Reduce muddiness in overly boomy files by using a small negative setting.
Tips for better results
- •For speech, modest moves such as +2 dB to +6 dB usually sound more natural than extreme boosts.
- •If plosives or handling noise are already in the file, bass boosts will make them more obvious.
- •Export WAV first if you want to chain EQ, compression, or more mastering work afterward.
Bass Booster FAQ
Will this only affect kick drums and bass instruments?
No. The filter shapes the low-frequency range of the full file, so voices, ambience, and other elements can change too.
Is my audio uploaded to a server?
No. The processing happens in your browser, so the source file stays on your device.
Which formats can I upload?
Most common browser-decodable formats are supported, including MP3, WAV, M4A, FLAC, OGG, and many AAC-based files.
When should I export WAV instead of MP3?
Choose WAV if you plan to keep editing or chain more processing afterward. MP3 is better for quick sharing and review.