Today i built myself a cheap, small and lightweight microphone for the KX2 … seen on the videos from @ZL4RA and @K6ARK and recently brought up on this thread:
It turned out to be simple soldering work that was well within my capabilities 
Adjusting MIC BIAS, MIC BTN, MIC GAIN and TX CMP on the KX2 … it seems to work just fine. 121g less weight to carry and more space in my backpack for other things!
73 Martin, OE5REO