Any input will be greatly appreciated
In my case, I had a Steam Streaming Microphone and Steam Streaming Speakers. This answer helped in my case.
I had to go to /Library/Audio/Plug-Ins/HAL (use the terminal or press ⌘⇧G in Finder and paste the path there). There I found the two drivers and removed them. Restart afterward for it to take effect.
Please open the “Finder”, then select “Go”->”Go to Folder”.
Fill in “/System/Library/Extensions” if you are using Mac OS X 10.8, or ” /Library/Extensions” for Mac OS X 10.9 and later, and click “Go”, then delete the file Apowersoft_AudioDevice.kext, then reboot your Mac.
If the above-mentioned ways cannot solve your problem, you can go to “Finder”, then select “Go”->”Go to Folder”. Then enter “/Library/Audio/Plug-Ins/HAL/Apowersoft Audio Device.driver” and click “Go”. Afterwards, please delete the “Apowersoft Audio Device.driver” folder, and restart your Mac. Then the Apowersoft Audio Device will be removed completely.
source: https://www.apowersoft.com/community/topic/uninstall-apowersoft-audio-device-on-the-mac.html
Try /Library/Application Support and see if you find any Apowersoft folder(s) there. If so delete them and reboot your Mac. That should resolve your problem ;)