What does that mean?
Where are your headphones plugged in?
How is the DAK 2800 connected to your computer?
What does that mean?
Where are your headphones plugged in?
Is that the "current release version" of Mojave, or "the latest beta version" of Mojave?
Is that "Audacity 2.3.0" or "Audacity 2.3.1 alpha"?