Electret cardioid microphone back.
Powered by 1.5 V AA battery in the microphone body.
XLR 600 Ohm
I, I bought a pair ages ago for recovery of instruments on stage.
Overheads, guitar and strings return, choirs, harps, everything happened and they came out very honorable (and even integers, which adds robustness to their qualities).
I now have several brands of static, generally much more expensive and my Prologue 16 have not to be ashamed by comparison, of course keeping in mind the price.
They are micro mat who are not afraid of the difficult conditions, those in which I would not risk my 4041, 535, Oktava ...
Likes: Price, durability.
I do not like: Alim cell