BASS EFFECT
Bass booster online
Add weight to thin recordings. Hear the bass change while the track plays, then export an MP3 with peak protection built in.
This free bass booster raises the low end of a song, voice or video soundtrack and exports it with peak protection against clipping. No signup is needed, and the file is processed on your device, not uploaded.
Try a short original beat, then hear it with the bass boosted.
Boost bass in an audio file in three steps
- Choose an MP3, WAV, M4A, or other audio file, or try the included beat.
- Set the bass amount and choose where the boost sits: deep sub, punchy kick, or warm low-mids.
- Compare with the original, then press Export bass-boosted MP3 to download it.
Choose where the bass lives
Not all bass is the same. A boost centred at 60 Hz adds the sub-bass you feel in a club or good headphones, but small speakers cannot reproduce it. Boosting around 100 Hz adds punch that carries on laptops and bluetooth speakers. A boost near 160 Hz adds warmth to male voices and acoustic guitars but can make a mix muddy. The frequency selector lets you pick the region instead of lifting everything below 200 Hz. To change the whole tone of a recording rather than just its low end, use the five-band equalizer.
Boost bass without distortion
A common mistake is to turn up a bass boost until the track clips. This tool reduces the level before the boost, applies a gentle limiter, and finishes by lowering any remaining peak, so the bass gets stronger without crackle. A high-pass filter below 28 Hz also removes inaudible rumble that eats headroom. See the guide on boosting bass without distortion for the full workflow.
Harmonic bass for phones and laptops
Tiny speakers cannot play deep notes, so a plain boost often sounds like nothing. Switching on harmonic bass adds overtones of the low notes at higher frequencies that your ear interprets as bass even when the fundamental is missing. It is the trick behind many bass-boost apps, and it is very effective for phones and small bluetooth speakers. Leave it off for headphones and studio monitors.
Which files work
MP3, WAV, M4A, AAC, OGG, and FLAC audio work in browsers that can decode them. Videos can be used too; the video bass booster page keeps the picture. The export is an MP3, so if you need lossless output, work in an editor. Files stay on your device the whole time.
Frequently asked questions
How do I boost the bass of an MP3 online?
Choose the MP3, raise the bass amount while it plays, then export. The bass-boosted MP3 is generated in your browser and never uploaded.
How much bass boost is too much?
More than 10 to 12 dB often muddies the mix or triggers the limiter. Start at 6 to 8 dB. If the track sounds boomy, move the boost to a higher centre frequency or lower the amount.
Why does my bass boost sound distorted?
Boosting makes the loudest peaks louder than the format allows, so they clip. This tool lowers the level before boosting and limits peaks. If a track is already mastered very loud, use a lower amount.
Will it work on my phone?
Yes. Modern iPhone and Android browsers can run the boost. Long tracks use more memory, so try songs under ten minutes on a phone.
Is the bass booster free?
Yes. Boosting and downloading are free, with no signup and no account.
Is there a file size limit for bass boosting?
There is no upload limit because nothing is uploaded. The file is decoded in your browser’s memory, so the tool warns above 150 MB: very long files may be slow or fail on a phone, and a computer handles them better.
All processing runs locally in your browser memory via WebAssembly and Web Audio. Files never leave your device. Built-in peak limiting prevents audio clipping.
AudioClover Engineering · Updated October 2026KEEP IN THE LOOP
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