Here's an odd question; does the famicom mic kill Pol's Voice in the cart versions of Zelda (US and famicom reissue?)
It does work in the cart version for the Famicom (linky (http://www.famicomworld.com/forum/index.php?topic=2827.msg38790#msg38790)). Not sure about running the NES version through a converter.
I will have to give it a try once I find a converter for my Famicom.