Do you have a graph of the freq response? I might be interested in one of these things!View attachment 19403
as you can see there are options on the board to power the mic board from 12v weather it has the mentioned 7805 reg (5v reg) on the board in the pic or not is another thing plus it has solder point to add scanning buttons.
i am sure its a ecm insert but cant say for sure ..hopefully it is because i know the company that makes them has the crappest dymanic inserts on the market !
however the ecm inserts they use are very good (nice frequency response curve
time will tell
certainly not a mic that would sell here in my market ..no one likes power mics or so called nosie cancel mics (a real nosie cancel mic would have twin inserts out of phase or at least a adjustable rear open port not a single one with no adjustable port)..maybe they are faking noise cancelling with a audio highpass filter rolling off the road noise (but mudding the audio)
some one buy one and sweep it
On edit, sorry, missed the part where you asked for a sweep.
73,
Brett