Using iRig and I can’t hear my guitar on GarageBand

Hello BFSPMALOney,

To help resolve this issue and determine the cause, first make sure your MacBook is up-to-date.

Apple's updates contain software that is crucial to the operation of your MacBook:

Update macOS on Mac - Apple Support

Before you get started, it's a good idea to back up your Mac. Then follow these steps to find and install any available software updates or upgrades.

1. From the Apple menu  in the corner of your screen, choose System Preferences.

2. In the System Preferences window, click Software Update.

If your System Preferences doesn't include Software Update, learn how to upgrade to macOS Monterey or upgrade to an older macOS, and use the Updates tab of the App Store app to get app updates.

3. Click Update Now or Upgrade Now:

• Update Now installs the latest updates for the currently installed version, such as an update from macOS Big Sur 11.5 to macOS Big Sur 11.6. 

• Upgrade Now installs a major new version with a new name, such as macOS Monterey. Software Update shows only upgrades that are compatible with your M

Also, test to see if you can hear your Guitar in GarageBand without using the iRig system. This will help us determine if the issue is with GarageBand or iRig.

Let us know what happens.

Best Regards.