Bass booster
Boost the bass of songs and audio online with adjustable bass boost, or enhance the treble and voice, without installing anything.
Boost the bass of your audio
Available in: 
Bass booster: what it is for
Choose to boost the bass, boost the treble or enhance the voice, and set the intensity in decibels. A limiter keeps the sound from clipping with the boost.
Enhance voice mode cuts muddy bass and boosts the speech range, great for phone recordings. The audio is not uploaded to any server: everything is processed in your browser.
How to use
- Choose the mode and intensity.
- Upload the audio files.
- Listen and download as MP3.
When to use it
- Give songs more bass for the car.
- Make voice recordings clearer.
- Adjust audio for videos and podcasts.
Frequently asked questions
How much bass should I add?
+4 to +8 dB already makes a clear difference. High values can distort on small speakers; the tool uses a limiter to avoid clipping.
Can it improve voice?
Yes. Enhance voice mode reduces muddy bass and boosts the speech range, making phone recordings clearer.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.