As we’ve discussed already, the new, more open design of Pro Tools 9 enables users to use a wide variety of devices for audio I/O—in fact, any audio interface that includes an ASIO or Core Audio driver. To make the most of this new feature, though, you’ll need to know how to choose the audio engine that works best in any given situation. To get this fundamental control over Pro Tools, you’ll make use of Pro Tools’ Playback Engine dialog box.
Click on Setup. The Setup menu opens.
Choose Playback Engine. The Playback Engine dialog box will appear.
Click on the Current Engine arrow. A menu of ...