Speech Mic through Headphone Jack

[modene1]

Hi folks,

Bought this speech mic and cannot get Mac to recognise it. Done some research to discover that:

1. Use Audio Port option has been dropped in Mojave
2. Preferences - Security which allowing access to apps doesn't solve the unrecognised problem.
3. Can't find any reference to Line In in new Preferences - Sound

The device is recognised, but unfortunately the Mac thinks it's an Output device.