Yes that's right! My headphones work when I listen to YOUTUBE, my external USB mic works with Quicktime, it shows a signal when I look at Preferences and when using third party app – BUT…I do not hear my mic through my headphones…!?????/
No, it is not a headset with a mic on it – I am using a Shure SM57 with a MIC MATE USB adapter.
The mic sounds GREAT via Quicktime – and I know the headphones work because YOUTUBE audio comes through, But when I using my third party FREE CONFERENCE CALL desktop app they do not work together! I get a signal from my mic – and their test audio works through my headphone but they do not work together!