Posted by John Swensen on July 02, 2002 at 10:40:24:
In Reply to: Re: mouthpieces and stuff for sale posted by mike on July 01, 2002 at 20:34:29:
Pressure Zone Microphone.
It is designed to operate when in contact with a large, flat surface (like a piano lid),
and receives sounds from one side of the surface, only. They can sound quite good.