F999B Sensitive Listen Through Wall Contact & Probe Microphone Amplifier System | eBay
Guitar Contact Microphone Preamp : 7 Steps - Instructables
field recording - DIY contact microphone - Sound Design Stack Exchange
Cortado MkII Balanced Buffered Contact Mic DIY Kit - Zeppelin Design Labs
Piezo contact microphone hi-Z amplifier – low noise version – Richard Mudhar
Piezo Element Amplifier for Guitar and Violin - Electronics-Lab.com
Piezo contact microphone hi-Z amplifier using a FET – Richard Mudhar
building contact microphones - john grzinich
Building your own Piezo-Preamp – The Center for Haptic Audio Interaction Research
Make this DIY Contact MIC Circuit | Homemade Circuit Projects
Guitar Contact Microphone Preamp : 7 Steps - Instructables
Designing and building an active contact microphone for field recording and sound design — Ezra Gray Audio - Sound Engineer & Sound Artist in Dorset, UK
Simple Contact Microphone
Make this DIY Contact MIC Circuit | Homemade Circuit Projects
Building (or Buying) Contact Mics – Zach Poff
Guitar Contact Microphone Preamp : 7 Steps - Instructables
SWM-25
operational amplifier - What is a good circuit for recording a piezo contact microphone or an electric guitar pickup? - Electrical Engineering Stack Exchange
Alex Rice Piezo Preamplifier – Zach Poff
Amazon.com: UZIMO Enhanced Version Super Sensitive Listen Thru-Wall Contact/Probe Microphone Amplifier System : Electronics
Custom Contact Mic Preamps - Yann Seznec
Simple Contact Microphone
Amazon.com: Metal Marshmallow Piezo Contact Mic (White +14dB) : Musical Instruments
Piezo Preamps
