These things look really cool! Dual internal mic, supposed to capture the phasing that two ears would. Also super adjustable for placement, and the two mics are supposed to cancel feedback. Several types, from noise resistant gig mikes to sensitive studio... have been mulling these over, after years of crummy acoustic pickups and mikes, from too-hot ribbon active, to boomy feedback wolf internal mikes. Outfit out of Greenville California.
[Edited on 8/16/2015 by BrerRabbit]