Raise or lower bass and treble without uploading

Pick more bass, less bass, more treble or less treble. The file type stays. The work runs in this tab.

Runs in your browser Free No sign-up
  1. Choose file
  2. Set options
  3. Get result

Your file never leaves your device. Processed locally in your browser. Nothing is uploaded.

More bass runs the FFmpeg bass filter. More treble runs the treble filter. The file type stays. Audio up to 10 minutes. A video belongs on the video pages.

How to change bass and treble

1. Drop an audio file you already have. A video is refused here. 2. Leave more bass, or pick less bass, more treble or less treble. 3. Press “Apply EQ” and download the same file type.

GustKit runs the FFmpeg bass filter or the treble filter. More bass adds 8 dB around the low shelf. Less bass cuts 8 dB. More treble adds 8 dB on the high shelf. Less treble cuts 8 dB. MP3, WAV, M4A, OGG and FLAC keep their type.

Tone, not a format change

Change volume raises or lowers the whole file. Audio pan moves the sound left or right. This page changes the low shelf or the high shelf and leaves the clock time about the same. A video belongs on the video pages.

The audio stays in this tab

FFmpeg runs in this browser. GustKit does not fetch audio from a link. Close the tab and the file is gone. Audio up to the limit shown next to the button.

How to check the bass and treble

1. Play the download next to the original. 2. More bass should thicken the low end. More treble should brighten the high end. 3. If the file type changed, you opened a different page.

Change volume moves the whole file. This page runs the FFmpeg bass filter or the treble filter and keeps the file type. Nothing is uploaded.

Frequently asked questions

The download is the same type and the low end is louder. Did it work?

Yes. More bass lifts the low shelf by 8 dB. The extension stays the same.

Can I boost bass and treble in one step?

No. This page runs one shelf at a time. Run more bass, then open the download here again and pick more treble.

Can I change the tone and also change the volume in one step?

No. Change the tone first, or change the volume first, then open the other page on the download.

Is the audio uploaded?

No. FFmpeg runs in this tab.

The low end is louder and the file is still WAV. Did it work?

Yes. More bass adds 8 dB on the low shelf. The extension stays the same.

Can I change the tone and also change the sample rate in one step?

No. Change the tone first, or change the sample rate first, then open the other page on the download.