Which external microphone to use with OP-1?

@toesthecat said:
This one looks interesting for not a lot of money:http://www.amazon.com/Movo-Stereo-Condenser-Microphone-Cameras/dp/B00TIZ1YQW

I’ve tried a similar product, a copy of Rode VideoMicro, and it doesn’t work. I’ve tried a Zoom H2 using headphones out and mid gain, it works. I think powered mics works better.