DIY piezo preamp with hi-pass filter – breaks.berlin
Piezo contact microphone hi-Z amplifier using a FET – Richard Mudhar
Contact Mic - CircuitLab
operational amplifier - What is a good circuit for recording a piezo contact microphone or an electric guitar pickup? - Electrical Engineering Stack Exchange
The Mint-box Piezo Buffer
Binoy's Tech Blog: Using a piezo-microphone
Simple Surface Microphone
Make this DIY Contact MIC Circuit | Homemade Circuit Projects
How to Build a DIY Contact MIC Circuit
Guitar Contact Microphone Preamp : 7 Steps - Instructables
Guitar Contact Microphone Preamp : 7 Steps - Instructables
Piezo Preamp Experiment - Cigar Box Nation
Microphones
Acoustic Guitar Pickup circuit & Wireless using TL071 | ElecCircuit.com
A 5-channel mixer / preamplifier for piezo disks by Godfried-Willem Raes
Piezo contact microphone hi-Z amplifier – low noise version – Richard Mudhar
Building your own Piezo-Preamp – The Center for Haptic Audio Interaction Research
A 5-channel mixer / preamplifier for piezo disks by Godfried-Willem Raes
contact microphone preamp buffer - MOD WIGGLER
Looking for piezo mic amplifier circuit - DIY STUFF - Look Mum No Computer Thingies
Alex Rice Piezo Preamplifier – Zach Poff
Simple Contact Microphone
How to Build a DIY Contact MIC Circuit
Guitar Contact Microphone Preamp : 7 Steps - Instructables
audio - Electronic stethoscope / contact mic not quite working - Electrical Engineering Stack Exchange
