SoundUser

Audio tools

Bass booster online for songs and edits

This bass booster online adds low-end weight to an audio file in your browser, without uploading it. Drop a song, adjust the bass while it plays, and compare it with the original. Download the full result or a selected clip as MP3 or WAV. Processing stays on your device.

SoundUser effects

Drop a song here

MP3, WAV, M4A, OGG · up to 10 min · processed on your device, never uploaded

Preset
100%
0 st
0%
60%
+9 dB

Space plays and pauses

Posting to TikTok or Reels? Effects do not change who owns a song. Make an original track and edit that instead.

How to bass boost a song in your browser

Start with a modest +3 dB boost, then compare it against the original before exporting.

  1. Load your audio. Drop a file onto the tool or tap "Try a demo track". Playback starts so you can hear changes live. Choose the Bass boost preset as your starting point.
  2. Adjust and compare. Move the bass boost slider while the kick and bass play together. Use the Effect/Original switch to check whether the low end sounds fuller or just louder. Reduce the boost if vocals become harder to hear.
  3. Choose your export. Drag across the waveform to select a clip, or keep the full track. The selected clip loops while you tweak. Click Download and choose MP3 or WAV.

The other processing options sit in the same browser audio tools, so you can compare effects without moving between editors.

Bass boost settings: start around 110 Hz

A low shelf around 110 Hz is a useful reference for adding weight to bass notes and kick drums without deliberately lifting the whole midrange.

BoostIntended effectListen for
+3 dBWarmth and extra weightBass masking a quiet vocal
+6 dBPunchy gym or trap editKick losing its attack
+9 dBHeavy car editLow notes merging together
+12-15 dBExaggerated, distorted editCrackle, pumping, flattened drums

Treat these as starting points, not targets. A track with a loud 808 may need less than +3 dB. A thin recording may tolerate more.

The bass slider controls boost in dB. The 110 Hz figure describes an EQ starting point, not a separate frequency control you need to find. For cowbell-led phonk, keep enough space for the kick beneath the cowbell.

Why bass boost distorts, and where a limiter helps

Bass boost distorts when the added low-frequency energy pushes peaks beyond the available headroom.

A limiter can catch those peaks, but it cannot make every boost sound clean. Heavy limiting can flatten the kick, pull the whole mix down on each bass note, or create audible pumping. Do not assume a limiter makes +12 dB safe for every song.

If you hear crackling, lower the boost first. Turning down your headphones changes listening volume, not distortion already baked into an export. Compare the same passage with Effect switched off.

Listen especially where the kick lands on a sustained bass note. That overlap is often the first place a heavy boost turns into a rough buzz. A stronger setting is not automatically a stronger-sounding mix.

Check sub bass on headphones and a phone

Phone speakers reproduce deep sub bass poorly, so a boost that shakes car speakers may barely register on a phone.

Headphones help you judge low notes, but also check the exported file through the phone speaker at a sensible volume. Listen for the rhythm of the bass, not just its depth. If the kick disappears under a sustained rumble, reduce the boost rather than adding more.

Bass with audible upper harmonics usually translates better to small speakers than a nearly pure sub tone. An effect cannot give a tiny speaker the physical reach of a subwoofer. Keep the vocal and drum attack readable; those elements still carry the edit when the deepest notes are missing.

Pair bass boost with speed changes for short videos

Choose a clip with a clear kick entrance, then set speed before making your final bass adjustment.

Slowing playback with pitch following moves bass notes lower, which can make an already deep 808 harder to hear. Add reverb sparingly: long low-frequency tails can blur the next kick. The slowed and reverb controls suit spacious edits, but keep checking the dry source.

For tighter movement, try the sped-up song workflow. Faster playback changes where the bass sits, so your previous boost may no longer fit.

Drag across the waveform and let the clip loop while adjusting. Check its start and end for awkward cuts. Export that selection, then listen again in the video editor before posting.

Write an original prompt with room for bass

For an original track you plan to bass boost, ask for a controlled low end rather than distortion at the generation stage.

Try this complete prompt in SoundUser: Instrumental trap, 140 BPM, E minor, short 808 notes, dry punchy kick, closed hi-hats, sparse bell melody, restrained sub bass, clear drum attack, no reverb on bass.

The intended result is a sparse arrangement with room to add weight later. This is a production target, not a report of a generated result. If the bass masks the kick, replace short 808 notes with bass rests on kick hits. If the low end already sounds saturated, request clean bass tone and start the effect at +3 dB.

Bass boosting does not change song ownership

An effect does not change who owns a song: edits of other people's recordings are still their recordings, and platforms may mute or claim them.

Permission to listen is not necessarily permission to publish an edited version. Check the permissions for your source before using it in a public video. Keeping file processing on your device does not settle those permissions.

For an original, make a track with SoundUser. The music for short videos page can help you plan the song around your clip rather than adapting someone else's recording.

Tracks you create are yours to use in your own projects, including commercial ones, under the SoundUser Terms

Frequently asked questions

01How much bass boost is too much?

Start at +3 dB and judge the busiest bass passage. Around +6 dB can feel punchy; +9 dB is a heavy edit. At +12-15 dB, expect a much greater risk of distortion. Stop when the kick loses definition, vocals become buried, or bass notes stop sounding distinct.

02Why does my bass boosted song distort?

Boosting low frequencies raises peak levels and can exhaust the recording's headroom. The source may also contain distortion already. Switch between Effect and Original at the same passage, then reduce the bass setting. A limiter can restrain peaks, but aggressive limiting may replace clipping with pumping or flattened drums.

03Will the bass be heard on a phone?

Some bass will, especially its upper harmonics, but deep sub notes may be barely audible. Check both headphones and the phone speaker. Do not keep increasing the boost to compensate for the phone: that can overload larger speakers while doing little to improve playback on the phone.

04Can I combine bass boost with slowed and reverb?

Yes. Use the Slowed + reverb preset, then adjust the bass while listening to the selected passage. Set speed first because pitch-following playback changes the bass frequencies. Keep reverb mix and room size restrained if bass tails overlap, and compare with Original before downloading.

05Can I bass boost any audio file?

Use a file the browser tool can decode; not every audio format or codec is supported by every browser. If a file will not open, try a WAV or MP3 copy. Bass boost also needs low-frequency content to work with: a thin voice recording will not become a sub-bass track.

One idea · one finished track

Ready to make your track?

Describe the idea, pick a style, and SoundUser writes, sings and mixes the song.

Start with the generator