Audio Channel Editor
Give each channel its own space.
Drop your recording here
MP3, WAV, M4A, FLAC or OGG · Up to 500 MB · 1 hour
Choose audio
Upload or replace your recording.
Shape your channels
Adjust left and right, swap channels, or choose a single channel.
Listen & export
Preview your audio and export the edited file.
Audio Channel Editor online
Edit left and right audio channels online. Adjust volume, mute, swap or invert polarity, choose mono or stereo, and export MP3 or WAV.
Choose a recording up to 500 MB and one hour long. Review your settings, listen to the result and save the file with the name you prefer.
Frequently asked questions
Can I save only the left or right channel?
Yes. Choose Left only or Right only in Output. The selected channel is saved as a mono file, with your volume and polarity settings applied.
What does invert polarity do?
It flips the positive and negative samples in a channel. Listen to the preview, especially when mixing both channels into mono, because opposite polarity can cancel matching sound.
Can I swap left and right?
Use Swap channels to send the original left sound to the right and the original right sound to the left. Then adjust each side and compare Original with Preview before exporting.