When using Reaper, or any audio software, on Windows make sure you have enabled microphone access, so the software can access the inputs on your audio interface: Windows Microphone Security Access

1. Specify which audio device Reaper uses for inputs and outputs. To do this, navigate to:
Options > Preferences > Audio > Device 

2. Select the device you wish to use. On Windows, it will be the name of the driver:

• Under 'Audio systems' select 'ASIO'
• Under 'ASIO Driver' select 'Focusrite USB ASIO' (or 'Focusrite Thunderbolt ASIO' if using a Thunderbolt device like Red and Clarett Thunderbolt interfaces).

You can also set your sample rate in this menu, in the example below set to 48000 (Hz), i.e. 48 kHz.

3. Make sure to select the inputs and outputs you wish to be selectable in the 'Enable inputs' and 'Output range' sections.

4. Click OK, once you've set everything up.

5. In the main Reaper window, go to Track > Insert New Track to add an audio track.

6. Click the Record Enable button on that track.

7. Select the track's Input from the dropdown menu by clicking the meter section area (shown in the screenshots below)

This should be the input that you have your microphone/line source/instrument connected to on your interface. For example, if your microphone is connected to the first input on your interface, select Input 1.

8. Press the Record button in the transport bar to begin to record.

• Click the Stop button to stop the recording.
• Click the Play button to listen back.

9. To export your recording as an audio file, go to File > Render. Choose the destination that you wish the file to be saved to, then click 'Render'. Alternatively, to save your Reaper session simply go to File > Save.

The following videos are from the Scarlett 2i2 4th Gen Easy Start website. Although they focus on Scarlett 2i2 4th Gen, the same principles apply to all of our interfaces:

When using Reaper, or any audio software, on Mac make sure you have enabled microphone access, so the software can access the inputs on your audio interface: Microphone Access Security Setting Mac

1. Specify which audio device Reaper uses for inputs and outputs. To do this, navigate to:
Reaper > Preferences > Audio > Device 

2. Select the device you wish to use under the Audio Device drop-down menu. This will be the name of the interface. In the example below, 'Scarlett 2i2 USB'.

You can also set your sample rate in this menu, in the example below set to 48000 (Hz), i.e. 48 kHz.

3. Click OK, once you've set everything up.

4. In the main Reaper window, go to Track > Insert New Track to add an audio track.

5. Click the Record Enable button on that track.

6. Select the track's Input from the dropdown menu by clicking the meter section area (shown in the screenshots below):

This should be the input that you have your microphone/line source/instrument connected to on your interface. For example, if your microphone is connected to the first input on your interface, select Input 1.

7. Press the Record button in the transport bar to begin to record.

• Click the Stop button to stop the recording.
• Click the Play button to listen back.

8. To export your recording as an audio file, go to File > Render. Choose the destination that you wish the file to be saved to, then click 'Render'. Alternatively, to save your Reaper session simply go to File > Save.

The following videos are from the Scarlett 2i2 4th Gen Easy Start website. Although they focus on Scarlett 2i2 4th Gen, the same principles apply to all of our interfaces: