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INSTALLATION

About the Audio Hardware

The audio hardware is the computer equipment that converts the digital signals from Reason to analog au-

dio signals (for connection to an amplifier, headphones, or similar). It also converts analog input signals

from microphones or instruments to digital signals that Reason can sample or process in other ways. This

equipment could be a standard stereo sound card, a USB audio interface, the built-in audio hardware on a

Macintosh or some more advanced audio card with several inputs and outputs, digital connectors, etc. Re-

gardless of which, you need to make sure the hardware and its drivers are properly installed:

Audio hardware and Mac OS X

If you are going to use only the outputs of the built-in audio hardware

In this case you don’t need to make any extra settings. Just connect the audio output to your listening

equipment (speakers, mixer, headphones or similar) and make sure your Mac plays audio properly.

If you are going to use both the inputs and outputs of the built-in audio hardware

All Mac models come with a built-in audio interface, providing stereo input and output jacks (and in some

cases a built-in microphone). Depending on your needs, the quality of these inputs and outputs may be

fully sufficient for use with Reason.

If you use Mac OS X 10.5 and later, Reason provides a number of pre-configured Input(s)+Output(s) com-

binations that can be accessed from the Audio tab in Preferences. However, under Mac OS X 10.4 the

system presents the built-in inputs and outputs as two or three individual audio devices. This means that,

by default, you can only select the "Built-in Output" option in Reason's Preferences. This works fine for

playback, but since you get no inputs at all, you cannot record audio.

To get access to both built-in inputs and outputs, you need to create an "Aggregate Device", combining in-

puts and outputs into one "virtual" audio device. This is done in the Aggregate Device Editor.

! Although Aggregate Devices can be used, regular audio devices with both inputs and

outputs have proven to be more reliable and allow lower latencies. Therefore, we recom-

mend using external audio hardware with good Core Audio drivers instead.

Proceed as follows to create an Aggregate Device:

1. In OS X, open “Audio MIDI Setup” in the “Utilities” folder in “Applications”.

2. Select “Open Aggregate Device Editor” from the Audio menu.

The Aggregate Device Editor

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