Balance Lock
Balance Lock is a free macOS utility that keeps your Mac’s left-right audio balance fixed at the center or a custom point.
What is Balance Lock?
Balance Lock is a macOS utility for people who want their Mac’s stereo audio balance to stay fixed instead of drifting left or right. It helps with a long-standing issue some users notice when connecting headphones, speakers, or USB audio devices, and it can automatically restore the preferred balance setting in the background. The app supports locking the balance to the center or to a custom point, which can also be useful for users who prefer audio weighted to one side. It offers optional notifications when it corrects the balance, so you can tell when the setting changed. Balance Lock is built for Mac workflows and is available from Tunabelly as a lightweight helper rather than a full audio editor or mixer.
Key features
- Keep stereo balance locked to the center automatically
- Set a custom left-right balance lock point
- Correct balance drift when headphones or audio devices are connected
- Work with USB audio devices as well as standard Mac audio output
- Show optional notifications when the balance is restored
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Safety overview
Status: Safe
Balance Lock is a focused audio utility with behavior that matches its purpose: it monitors and adjusts your Mac’s audio balance setting so playback stays where you want it. It runs quietly in the background while active, which is normal for this kind of helper app. Removing it simply stops the automatic balance correction and does not affect your audio files.
Recommendation: Keep Balance Lock if you use headphones or speakers that trigger balance drift on your Mac, or if you want a fixed custom balance setting. If you do not need automatic correction, you can remove it without harming macOS; you would just lose its background balance-locking function.
Common paths
/Applications/Balance Lock.app
Support paths
~/Library/Application Support/Balance Lock
Preference paths
~/Library/Preferences/com.tunabelly.balancelock.plist
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