Bass booster
Boost the bass of a song, MP3, or video for free, without distortion. Nothing is uploaded, and there's no watermark or sign-up.
Drop an audio file to boost its bass
Turn up the bass of a song, MP3, or video, without distortion. The treble and middle can change too.
MP3, M4A, WAV, FLAC, and other audio, or a video with sound.
How to boost the bass of a song
Open an MP3 or any audio file, pick Bass boost or Heavy bass, or set the bass yourself up to 15 dB, and save it. A limiter holds the loudest moments under clipping, so the extra bass doesn't crackle. The middle and treble can be turned too, and a video's sound changes under its picture. It runs in your browser, so the file stays on your device.
Step 1
Open your songAn MP3, WAV, M4A, or a video with sound.Step 2
Set the bassPick Bass boost or Heavy bass, or slide it up to 15 dB.Step 3
Download itSaved in the same format, with no clipping.
What to expect
- Supported inputs
- MP3, WAV, M4A, AAC, FLAC, OGG, Opus, AIFF, and other audio files, and videos (MP4, MOV, MKV, WebM) with sound.
- What happens
- The bass (a shelf below about 100 Hz) is turned up by the decibels you choose, and peaks are held under -2 dBFS so nothing clips. The file is saved in its own format (FLAC as WAV); a video keeps its picture.
- Limits
- Boosting adds weight to what's there; it can't add bass a recording never had, and small phone speakers can't play the lowest notes.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark