simple condenser mic preamp circuit - ElecCircuit.com
How to Build a DIY Contact MIC Circuit
Make this DIY Contact MIC Circuit | Homemade Circuit Projects
Building (or Buying) Contact Mics – Zach Poff
Contact Mic - CircuitLab
Make this DIY Contact MIC Circuit | Homemade Circuit Projects
Piezo contact microphone hi-Z amplifier using a FET – Richard Mudhar
Make a Contact Microphone : 10 Steps (with Pictures) - Instructables
Simple Surface Microphone
Use An Old Phone Handset To Produce A Lo-Fi Mic | Production Expert
DIY Contact Mic - Collin's Lab - YouTube
Simple Microphone (MIC) Amplifier Circuits
Schematic diagram of electret microphone working principle - Printed Circuit Board Manufacturing & PCB Assembly - RayMing
Balanced Piezo Contact Microphones - Instructables
A 5-channel mixer / preamplifier for piezo disks by Godfried-Willem Raes
Building (or Buying) Contact Mics – Zach Poff
Piezo contact microphone hi-Z amplifier – low noise version – Richard Mudhar
Simple Contact Microphone
Contact Microphone : 8 Steps (with Pictures) - Instructables
Collin's Lab: DIY Contact Mic - Make:
Simple Contact Microphone
field recording - DIY contact microphone - Sound Design Stack Exchange
How to Build a Microphone Amplifier Circuit
