Audio Monitoring that is, with the input turned on, the sound that you input from a microphone are automatically fed through the output. So you hear it back as you are making them.

 

Unlike Windows, in which you can enable the function of “Listen to this device”, there is no direct way to get the real-time monitoring on Mac. But what to do when you need to check levels on a microphone or you want to pass audio from microphone through Mac to speaker while doing the presentation?

 

The included app on your Mac will do the job, like the Garageband, Log Pro X, etc. But we will pick up the simplest one, the QuickTime Player, which is easier to use and will take up less CPU engagement.

1. Open the QuickTime Player.

2. Go to the “File”> the ”New Audio Recording”.

3. Click the arrow next to the Record button, choose “USB PnP Audio Device”.

4. Adjust the volume slider to the right. 

 

Another method is to use a monitoring app for Mac, like AudioMonitor (https://mac.softpedia.com/get/Developer-Tools/MTCoreAudio.shtml). You just need to select the correct input & output and click Play Through button to start hearing audio.
Notice: The software will reveal itself as a package of contents. The only one you need to be interested in is AudioMonitor. Drag that icon over to the Applications folder on your Mac to install the program. Feel free to discard the rest.

 

It may take a bit of time to find the option of input monitoring (on Garageband) or software playthrough (on Audacity). 

 

If you would like to suggest any other methods to monitor audio on Mac or have the problem of using that software, feel free to comment below!