I asked Brian this question but I don't think he quite understood what I was asking.
I've ordered a Happie Amp 2.0 recently and realised maybe I should have also ordered the OSP HS-09 mini headset microphone. Rather than pay for more postage I can source a similar one here in Australia and as I don't have the Amp yet wanted to know what type of connection plug it has. I know there are 3 or 4 pin mini plugs (plugs that accept either 3 or 4 pins) so which does the headset for the Happie Amp have?
Any advice and/or recommendations is appreciated :)