The bass boost made everything muddy — what should I change?

Pull the bass back to about +5 dB and take a couple of dB off the mids. The low end stays punchy without smearing.

Why is it not louder after boosting?

A limiter runs afterwards to prevent clipping. If the result is still quiet overall, follow up with the Volume & Speed or Normalize Audio tool.

Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

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🎛️Online Audio Equalizer - Bass Boost, Vocal Clarity, Tone Shaping

Three bands shape the tone: bass carries weight, mids carry vocal clarity, treble carries detail and air. Add bass to give music more body, lift the mids to make a lecture recording easier to follow. Presets for bass boost, vocal, bright, warm and telephone are one click away.

Free · No sign-up · Runs in your browserLast updated: 2026-10-26

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How to use Audio Equalizer

1Upload one or more audio (or video) files
2Click a preset, or drag the three band gains yourself
3Click start and download the result

FAQ

The bass boost made everything muddy — what should I change?: Pull the bass back to about +5 dB and take a couple of dB off the mids. The low end stays punchy without smearing.
Why is it not louder after boosting?: A limiter runs afterwards to prevent clipping. If the result is still quiet overall, follow up with the Volume & Speed or Normalize Audio tool.
Are my files uploaded to a server?: No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, requires no account, has no usage limits and adds no watermarks.