Configuring The Sound Control Panel Before you use Peak, you must first configure your system’s inputs and outputs with the Sound Control Panel. The Sound Control Panel controls the Macintosh Sound Manager and the inputs and outputs of your Macintosh. Your exact setup will differ depending on the input device that you are using with Peak. You can use either the built-in audio input and outputs of your Macintosh, or if you own a plug-in expansion card such as Digidesign’s Audiomedia II, the input and outputs on this card.