My father in law is ready to give up his hearing aids and wear a pair
of headphones connected to an equilizing amplifier, with a microphone
input. It would allow him to hand the microphone to whomever he's
speaking with, filter out any competing noises, and listen through
comfy headphones.

Anybody know of such a thing? Are there variations on the CMoy design
that might work?

Rees
winwinsit at hotmail dot com