ok dont mind the bad photos and the dust.
here is the inside of the outter case and u see the circular mount over the grill section, this to me is a microphone mount.
on the left side of the main board under the port for the speaker and control buttons is another white 2 pin port. i assume is ment for a microphone but not sure.
and since im the kind of person that uses parts from old electronics i managed to find this cable with the same style connector from a laptop, although the connector was a 5 wire i trimmed it down with a knife to make it a 2 wire and cut and soldered a microphone from an old headset to the end. finding a cable to suit will be the hardest part of this as the connections on the board are micro and trying to solder to them with a regular iron would likely damage the board.
ive messaged pimax on skype to see if there is any firmware avaliable to test but i dont think ill be in luck. for now ill likely try some other mods i have planned.