Simple Surface Microphone
Piezo Preamps
operational amplifier - What is a good circuit for recording a piezo contact microphone or an electric guitar pickup? - Electrical Engineering Stack Exchange
Designing a Tin Can Piezo Microphone – DIY Recording Equipment
Microphones
Alex Rice Piezo Preamplifier – Zach Poff
How to Build a Microphone Amplifier Circuit
Piezo Preamps
building contact microphones - john grzinich
Contact Mic - CircuitLab
Looking for piezo mic amplifier circuit - DIY STUFF - Look Mum No Computer Thingies
Make this DIY Contact MIC Circuit | Homemade Circuit Projects
How to Build a DIY Contact MIC Circuit
Piezo Preamps
Simple Contact Microphone
The Piezoelectric/Crystal Microphone · Steele Vintage Broadcast Microphone Collection · UGA Special Collections Library Online Exhibitions
Simple Microphone to Speaker Amplifier Circuit Diagram
How to Build a DIY Contact MIC Circuit
Binoy's Tech Blog: Using a piezo-microphone
Collin's Lab: DIY Contact Mic - Make:
audio - Electronic stethoscope / contact mic not quite working - Electrical Engineering Stack Exchange
DIY piezo preamp with hi-pass filter – breaks.berlin
The Mint-box Piezo Buffer
