<h3>OS X</h3>
<p>You will need to set up what Apple refers to as an "aggregate
device" if any of the following conditions are true:
+
<ul>
<li>You want to use two entirely separate
- devices <strong>AND</strong> want to start JACK using Ardour.
+ devices <strong>AND</strong> want to start JACK using Ardour.</li>
<li>You want to use your builtin audio device <strong>AND</strong>
want to start JACK using Ardour.</li>
</ul>