Dear User, do mean the audio device cannot be removed after the installation of the program? If so, simply follow the steps below to delete the audio device files.
1. Open finder:

2. Then, select Desktop file and use shortcut key “Command + ↑ “, keep using this shortcut key untill you see “Macintosh HD”.Then, drag it to the left locations panel as the image shown below:

3. Now, enter Macintosh HD and click “Library”.

4. Enter “Audio” file.

5. Enter “Plug-ins”.

6. Enter “HAL” and then you will notice the file of Apowersoft audio device driver, simply delete the related file and restart Mac is alright.

And if you still cannot delete the audio device, please kindly point out that which step you are having problem with so that we can help you with it. Thank you for your support!