1. Open Quicktime Player in the Applications folder.
  2. From the File menu, click New Audio Recording.
  3. Click the dropdown arrow next to the red Record button and make sure the microphone you want to record from is selected.
  4. Click the red Record button to begin your recording.

    As you record, the duration and file size are displayed.

  5. Press the same button (now a Stop icon) to stop your recording.
  6. From the File menu click Save, and then name your recording and choose a file destination. Click the Save button to save your recording.