The information within is intended to provide useful circuits and theory to non-technical individuals. The content of this publication is not intended to be a complete works of circuits and techniques.

Although all designs and circuits have been tested and have had safety factors applied, the author (Tony Gargasz, KB8WOW) assumes no responsibility for safety, fitness, or use of any circuit or information contained in this publication.

Page 2 is a schematic for a preamp that you can build and can be used with just about any type of microphone.

Page 3 is a wiring diagram of a 1974 vintage Astatic D-104 just in case you need one.