Rather than repeat myself, I’ll direct you to my lengthy Arctis Pro + GameDAC review… which I also linked right at the top of the article you responded to, in bold text. :)
It has a detailed examination of the headset, and even links to my personal site where I tested the mic both with and without the GameDAC.
The base Arctis Pro headset is essentially identical to the one included with the GameDAC, so it should contain all the opinions you desire.
Thanks for reading.