If any changes are made to the Apollo I/O via the Core Audio tab the Pro Tools I/O will need to be reset to reflect these changes. Note for Apollo Thunderbolt users on Mac OS X: The Apollo I/O can be manually changed on the Core Audio tab of the Console settings. Repeat these steps for the 'Output', 'Bus' and 'Insert' tabs as well.This will re-populate the tab with the correct paths. Once all paths are deleted, click the 'Default' button.Delete all paths on this tab so it is completely empty. On the 'Input' tab, select all paths shown and click 'Delete Path'.Next, navigate to Setup > I/O and click on the 'Input' tab when the I/O Settings window appears.This video gives you a brief overview of how to record in Pro Tools. To do this, open Pro Tools and navigate to Setup > Playback Engine and make sure 'Universal Audio Apollo' is selected. This page will help you get started with SSL 2 & SSL 2+ USB Audio Interfaces. You will first need to make sure that the Apollo is selected as your Playback Engine within Pro Tools.Follow the process below to reset your Pro Tools I/O. Pro Tools' I/O settings can get changed for a number of reasons and it is sometimes necessary to reset the Pro Tools I/O to resolve issues with routing audio in to and out of Pro Tools.

Pro tools not recognizing interface