> 2. I will carry the microphone and amplifier in my shirt pocket. No more feedback. This is how hearing aids used to be: http://www.hearingaidmuseum.com/gall

> 2. I will carry the microphone and amplifier in my shirt pocket. No more feedback. This is how hearing aids used to be: http://www.hearingaidmuseum.com/gallery/Transistor%20(Body)/index-trans-body.htm http://www.hearingaidmuseum.com/gallery/Transistor%20(Body)/...