Balance old transfers
Correct cassette, vinyl, or line-in recordings where one channel was captured louder than the other.
What you get: Cassette, vinyl, or line-in recordings can be centered so one side no longer dominates the listening experience.
Fix Audio That Leans Left or Right
Fix audio that leans too far left or right.
Local processing · your file stays on your device
Best for recordings where the same voice or mix is stronger on one side. If the left and right channels contain totally different instruments, try mono conversion instead.
How to use
Get a cleaner result in four steps.
- Step 1 Load the stereo file that leans left or right
Choose a cassette transfer, line-in capture, podcast, lecture, or stream recording that feels uncomfortable in headphones.
- Step 2 Check the channel imbalance
Use the displayed balance information to confirm whether one side is actually louder before applying correction.
- Step 3 Set the correction strength
Use a gentle correction when the original stereo image should remain natural, or a stronger correction when one side is clearly too weak.
- Step 4 Balance and test the copy
Click Balance and download, then listen on headphones and speakers to make sure the center feels more comfortable.
Where it helps
When this tool helps.
Make headphone listening easier
Reduce the strain caused by podcasts, lectures, or voice recordings that pull strongly to one ear.
What you get: A podcast, lecture, or voice recording that pulls hard to one ear becomes more comfortable in headphones.
Check stereo balance before mono
Measure and balance stereo levels before deciding whether a mono copy would be more comfortable.
What you get: The stereo levels can be balanced first, giving a cleaner result if the user later converts to mono.
Clean uneven captured streams
Repair local recordings where a player, cable, or capture setup made one side noticeably weaker.
What you get: A local stream capture with one weak side can be corrected before sharing or archiving.
Best-in-class benchmark
What this page makes clearer.
Checked against mature online audio tools for the same job: the goal is not only to complete the task, but to make the next decision obvious.
Mature cleanup tools offer presets, before-and-after thinking, safety warnings, and clear export choices for voice, music, audiobooks, or old recordings.
Many one-click cleanup tools hide what changed, so users cannot tell whether a setting is too aggressive.
Cinch frames each cleanup around listening comfort, original-file safety, practical next steps, and clear result previews that reduce overprocessing.
FAQ
Questions before using this tool.
When should I use this browser-based audio tool?
Use it when you already have an audio file and need a cleaner, smaller, clearer, or easier-to-share copy before opening a full audio editor. It is useful for lecture recordings, meeting audio, voice notes, podcasts, music clips, MP3 files, WAV files, and saved browser recordings.
Does the audio file stay on my device?
Yes. This browser-based audio tool is designed to process the file locally, so you can test settings, preview the result, and download a new copy without uploading private recordings to a server.
Which audio formats work best?
Common browser-supported formats such as MP3, WAV, M4A, AAC, OGG, and FLAC usually work best. Very large files, unusual codecs, or protected streaming files may need to be converted, trimmed, or recorded again first.
What should I check before downloading the new audio?
Preview the result, compare it with the original, and make sure the speech, music, timing, volume, file size, or metadata still feels right. If the setting is too strong, choose a gentler option and run the audio processing step again.