AudioBento

Bass Booster

Boost bass in MP3 files and songs online for free. Adjust low frequencies from 0 to +12 dB, preview bass-boosted audio, and download MP3 or WAV.

Related Audio Tools

Audio Volume BoosterIncrease the volume of quiet audio.Audio NormalizerAdjust whole-track loudness toward a chosen LUFS.Bass BoosterMake existing bass frequencies more prominent.Audio EqualizerShape your sound with five EQ bands and ready-made presets.

How to boost bass in audio

  1. 1

    Choose your audio

    Choose an MP3 or another supported audio file. Listen to Original to decide how much more bass the recording needs.

  2. 2

    Adjust and preview the bass

    Drag the slider in 1 dB steps or pick +3, +6, +9, or +12 dB. Compare Original and Preview to find the right balance.

  3. 3

    Boost bass and download

    Choose MP3 or WAV and click Boost bass. Listen to the exported audio in Result, then download the version you prefer.

Boost bass in music and audio files

Use this online bass enhancer to make the low end of a song or recording more prominent. Preview the change before exporting MP3 or WAV.

01

One control for low-frequency boost

This audio bass booster uses a low-shelf filter centered at 100 Hz to bring forward bass already in the file. Adjust the bass boost and hear the change in Preview before exporting.

  • Adjust from 0 to +12 dB in 1 dB steps or choose one of four presets.
  • Compare Original and Preview during playback.
  • Peak protection engages above 0 dB; 0 dB bypasses the effect.

Example settings

Bass boost: +6 dB

Low shelf · 100 Hz

Original → Preview
02

Give drum-heavy loops more low-end weight

Bass-boosted drum loops can bring out existing kick drums and low percussion. Start with a modest increase and check that the low end does not overpower the other instruments.

  • Enhance low-frequency energy already in the loop.
  • Reduce the boost if the drums dominate the mix.
  • Compare the processed file before using it in a project.

Example settings

Bass boost: +3 dB

Low shelf · 100 Hz

Peak protection above 0 dB
03

Boost the bass in music and songs

Boost bass in an MP3 song or another music file without raising every frequency equally. This bass increaser works on low frequencies already in the source, and the result depends on your headphones or speakers.

  • Use a low shelf instead of overall volume gain.
  • Keep room for vocals and higher instruments.
  • Use an equalizer when you need separate frequency bands.

Example settings

Bass boost: +6 dB

Low shelf · 100 Hz

Original → Preview
04

Export bass-adjusted clips for your projects

Prepare a short music or soundtrack clip with a deliberate low-end balance. Download the processed audio for your video or presentation, and compare it on the speakers you plan to use.

  • Choose MP3 for a smaller shareable file.
  • Choose WAV when you need an uncompressed export.
  • Process again after changes to keep the download current.

Example settings

Bass boost: +6 dB

Low shelf · 100 Hz

Preview export → MP3 / WAV download

Bass Booster questions

Is this a bass boost EQ or a volume booster?
This Bass Booster is a focused low-frequency enhancer centered at 100 Hz, not a multi-band bass boost EQ. Audio Equalizer lets you adjust several frequency bands, Volume Booster changes overall gain, and Audio Normalizer aims for a LUFS loudness target.
What does the Bass Boost value mean?
Use the 0 to +12 dB slider in 1 dB steps, or select +3, +6, +9, or +12 dB. The default is +6 dB, with a fixed 100 Hz low shelf. At 0 dB, preview bypasses the effect and protection; clicking Boost bass shows a no-change message and skips processing.
Will Adjusted Preview sound exactly like the export?
Adjusted Preview uses Web Audio; export uses FFmpeg. Both apply a low shelf at 100 Hz with your chosen boost. Their peak protection differs, so they are not sample-identical. Preview always uses your current settings. Play the actual export in Result before downloading.
Can this restore missing bass or fix distorted audio?
No. The tool boosts low-frequency content already in the source. It cannot recreate missing bass, repair distortion, or remove noise. MP3 export re-encodes the audio; WAV avoids another lossy encoding step but cannot restore lost detail.
Does my audio leave my device?
Your audio stays in your browser during preview and processing. No account or AI credits are required. The first export downloads FFmpeg WASM from a CDN. That service supplies the processing program and does not receive your audio file.
Which input formats can I use?
Choose MP3, WAV, M4A, FLAC, OGG, or AAC. Input is limited to 2 channels and 48 kHz. Playback also depends on browser codec support. A container that passes validation can still be rejected if the browser cannot decode its audio.
Can I boost bass in a long recording?
Input budgets are 200 MB on desktop and 100 MB on mobile. Duration, channels, and export format also affect memory use. A large WAV output may exceed the export budget. Try MP3 or a shorter source if processing is rejected.
Should I export MP3 or WAV?
MP3 offers a smaller file with a selectable bitrate; WAV hides that control. Neither restores lost source quality. Settings changes do not alter the exported file or its displayed parameters. It stays downloadable during processing, failure, or cancellation until a new export succeeds.

Find the bass balance that fits your audio

Boost bass in your MP3 or other audio file, compare the result, and download the bass-boosted version.