Thanks for your help. I really appreciate it.
First things first: Your Turtle Beach headset ALSO has a USB connector. I hope that is not how your mic is really working. To test, please unplug the mic connector from the back of your Mac to confirm that it is using the rear line in port for the mic. If the mic still works, then we know that it's actually using the USB port. If the mic stops working, then we can proceed.
To adjust audio settings, there are a few places I know of:
1. Device manager:
MacWindows10Pro *the name I gave to the box, yours will be different
Audio inputs and outputs
microphone (Realtek High Definition Audio) *note that I edited the property, your prolly says "line in"
Realtek Digital Input (Realtek High Definition Audio)
Realtek Digital Output (Realtek High Definition Audio)
Speaker (Realtek High Definition Audio)
When I right-click on microphone (yours says line in) and select the drivers tab, I get:
Driver Provider: Microsoft
Date: 10/29/2015
Version: 10.0.10586.0
Singner: MS Windows
Clicking Driver Details pops a small windows that says no add'l drivers are required or loaded for this device.
Clicking Update Driver pops a dialog asking to search the web or search my box. Windows finds nothing on the web, and I can't point it to the drivers on my HD in the Realtek folder.
If I uninstall the driver, Windows reinstalls on reboot despite the fact that I've told it not to by opening a File Explorer window, right-clicking my box, selecting Properties, then Advanced System Settings, then selecting "no(your device might not work as expected)" under Device Installation Settings.
2. Still in Device Manager, but down near the bottom:
Sound, video and game controllers
High Definition Audio Device
NVIDIA Virtual Audio Device (Wave Extensible) (WDM)
Realtek High Definition Audio
Realtek High Definition Audio *with a little yellow triangle with an exclamation point (caution?)
That's where I believe the problem lies. I'm gonna take a guess and imagine that the top one is the output to my connected speakers and the bottom one is the input from my microphone. When I compare the last two items, here are the differences Windows reports:
General Tab:
Top Realtek HDA device:
Location: 0
The device is working properly
Bottom Realtek HDA device:
Location: Unknown
The device cannot start (Code 10)
The request is not supported
Driver Tab: *no difference
Provider: Realtek Semiconductor Corp.
Date: 6/18/2015
Version: 6.0.1.7541
The Events tab logs different installations
If you could let me know what is showing on your device manager, that would be super awesome.
Realtek also installs a GUI to control Input/Output I found it here:
C:\Program Files\Realtek\Audio\HDA\RtkNGUI64.exe
Those settings also appear to be correct.