Focusrite Scarlett 18i8 Manual page 27

2. Open Reaper
3. Audio Setup: Go to Options → Preferences → Devices
4. Insert a new track
Go to Track → Insert New Track or use Ctrl+T on the keyboard.
A new track will appear.
You need to click the
Record Arm/Disarm
button to hear the input
signal.
Arming the track
will reveal the input
menus.
From the IN/FX menu select
the mono or stereo inputs
you are using on the audio
interface.
In this example, a single
microphone-- a mono
channel from Input 1 on the
audio interface is being used.
To hear playthrough you
will need to click on the
speaker icon.
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