How to use headphone jack as input on Macbook Pro 2016 13" with touchbar?
In system preferences, in the sound menu, there is no dropdown option asking user for what they want to use the port for like the older macs.
There is no audio input (apparently there hasn't been since 2012). You will need to use a USB interface - an inexpensive one is the Griffin iMic.
Hold the Option key down and click the speaker icon in the menu bar. If you can’t switch the mode there, it probably means you cannot do it at all.
How to use headphone jack as input on Macbook Pro 2016 13" with touchbar
