Is the mic brand new?
When you spoke at 6 inches did the SIG LED light up or flicker on?
With headphones plugged into the UMC22 and listening to your speaking does it sound clear? Is there any noise such as pops, crackles, or hissing?
Can you try a different DAW such as Audacity?
https://www.audacityteam.org/
Not sure if this is relevant as a setting in a Mac, but maybe worth checking....
A few months ago, I decided to get more serious about my recording setup in my home office. I do a lot more screencasts both for my YouTube channel and for other purposes than I used to, and I can't stand poor audio quality. Therefore I finally decided to get some sound absorption panels for my...
www.jeffgeerling.com