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Bass Booster - Add Deeper, Punchier Bass

Push up the low end of any track with a shelving boost centered where you want it, from a sub rumble to a warm kick and bass guitar lift. Everything runs on your device and downloads as MP3, WAV or M4A.

Decoding, boosting and encoding all happen in this tab. Your file stays on your device the whole time.

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MP3, WAV, M4A, AAC, OGG, FLAC · até 200 MB

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Converta entre MP3, WAV, OGG, AAC, FLAC e M4A

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How the boost works

This tool runs FFmpeg's bass filter, a shelving filter that raises everything at and below the center frequency you set while leaving the rest of the track alone. It is the same kind of curve as the bass knob on a car stereo or amplifier, not a narrow spike at one note. Set the center around 60 to 80 Hz and you are lifting sub-bass and kick weight; set it toward 200 to 250 Hz and you also pull up bass guitar, low male vocals and the body of a snare.

Because the boost is a shelf, it raises the loudest parts of the low end the most, and that is what pushes a mix toward clipping. The Prevent Clipping toggle runs an alimiter after the boost, catching only the peaks that would otherwise distort and leaving quieter passages untouched. It costs a small amount of dynamic range in exchange for a track that stays clean at higher boost settings.

Picking a boost and a frequency for the job

The default of 8 dB around 110 Hz sits in a sweet spot: strong enough to notice on headphones, earbuds and most bookshelf speakers, low enough to stay controlled. Music heavy on sub-bass, like EDM, trap or dubstep, benefits from centering lower, near 60 to 90 Hz. Podcasts, acoustic recordings or anything with a male voice usually sound better centered higher, near 150 to 200 Hz, where it adds warmth instead of rumble.

Playback device matters more than most people expect. On earbuds and closed headphones, 6 to 10 dB is usually the full useful range; past that the mix starts to feel boomy rather than powerful. On a phone speaker or a small laptop speaker, a sub-bass boost below 80 Hz is often close to inaudible, since the driver physically cannot move enough air at that frequency, so a boost aimed at those devices should sit higher, closer to 200 to 250 Hz.

Quality limits and practical use

A shelving boost cannot add bass that was never recorded, and it cannot fix a source that was already distorted at low frequencies; it can only make the existing low end louder. Pushing the boost high without the limiter risks clipped, crackly bass, especially on already loud masters. With the limiter on, very heavy boosts instead sound compressed and a little flatter in dynamics rather than distorted, which is the safer failure mode.

People reach for this on tracks meant for car audio, workout playlists, a bass-heavy party system, or any edit that felt thin on a subwoofer compared to a laptop. It is also a fast way to preview how a mix will translate to systems with more low-end extension than the speakers you mixed on. Export as MP3 for a small file to share, or WAV if you plan to process it further.

Bass booster blueprint

What each setting does and where to start.

Boost range0 to 20 dB, default 8 dB.
Center frequency60 to 250 Hz, default 110 Hz.
Best forCar audio, workout tracks, EDM and hip-hop edits, thin-sounding recordings.
What it changesOnly the low end; a shelving filter, not a full EQ or a bass synth.
Quality noteAbove roughly 10 dB, keep the limiter on or peaks will clip and crackle.
OutputMP3, WAV or M4A.
LimitsUp to 200 MB per file, processed one file at a time.

How to Boost Bass Online

Three steps, all inside your browser

1

Add your track

Drop in an MP3, WAV, M4A, AAC, OGG or FLAC up to 200 MB. It loads straight from your disk, nothing leaves your device.

Tips: Start from the best copy you have. Boosting a heavily compressed MP3 also boosts its bass noise.

2

Set the boost and the center frequency

Drag the boost from 0 to 20 dB and pick where it centers, from 60 Hz for sub weight to 250 Hz for a fuller low-mid punch. Leave the limiter on to stop the boosted peaks from clipping.

Tips: 8 dB around 110 Hz is the default because it is audible on almost any playback device without turning muddy.

3

Preview and download

Listen to the boosted version against the original, then save it as MP3, WAV or M4A.

Tips: Check the result on the speakers or earbuds you actually use, since bass response varies a lot between devices.

Bass Booster Questions

What the boost actually does before you drag the sliders.

No. The boost runs on a WebAssembly build of FFmpeg inside this tab, so your file is read from disk, processed on your device and never sent to a server. You can confirm it yourself in your browser's network panel while a boost runs.
You can load MP3, WAV, M4A, AAC, OGG or FLAC up to 200 MB, and export the boosted result as MP3, WAV or M4A. Loading a bigger file is refused with a message instead of freezing the tab.
It can, which is why the limiter exists. Pushing bass frequencies up in level raises the loudest peaks in the file, and past a point those peaks clip and crackle. The limiter catches that by gently compressing the loudest moments so the boosted track stays clean at the cost of a little dynamic range.
On earbuds or headphones, 6 to 10 dB is usually plenty and anything past that starts to sound boomy rather than powerful. On small phone or laptop speakers, boosting the sub region around 60 Hz often does nothing you can hear, since those speakers cannot reproduce it, so aim closer to 150 to 250 Hz for a punch you will actually notice there.
Car audio, workout playlists, EDM and hip-hop edits, and any clip meant to play through a subwoofer or a bass-heavy speaker system. It is also a quick way to test how a mix will sound on systems with stronger low end than a laptop gives you.
The bass booster only touches the low end. If you want the whole track louder without changing its balance, use the volume booster, or the audio normalizer if you want it to land at a consistent loudness rather than a fixed dB bump.

Other one-click audio effects

Same idea, different part of the sound: fade, volume, loudness and reverse tools that run entirely in your browser.

Need the whole track louder instead of just the bass? gerador de música por IA

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