The Pro has a six pin, I believe it is the same as the old 6666 so the President mic should work. I have an old N2 and this Pro is on the next level above it. So many features audio bandwidth, adjustable AGC, adjustable FM deviation all from the regular menu and much more.Does that Quad 6 Pro have the same 6 pin microphone jack that you can use the President BT-Mike with ? What is your evaluation of the Q6 Pro is it as good as the Q5n2 or better ?