Piezo Preamps
Amazon.com: Metal Marshmallow Piezo Contact Mic (White +14dB) : Musical Instruments
Amazon.com: UZIMO Enhanced Version Super Sensitive Listen Thru-Wall Contact/Probe Microphone Amplifier System : Electronics
Piezo Element Amplifier for Guitar and Violin - Electronics-Lab.com
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Designing and building an active contact microphone for field recording and sound design — Ezra Gray Audio - Sound Engineer & Sound Artist in Dorset, UK
Guitar Contact Microphone Preamp : 7 Steps - Instructables
Building (or Buying) Contact Mics – Zach Poff
F999B Sensitive Listen Through Wall Contact & Probe Microphone Amplifier System | eBay
Simple Contact Microphone
Building (or Buying) Contact Mics – Zach Poff
Piezo contact microphone hi-Z amplifier – low noise version – Richard Mudhar
Alex Rice Piezo Preamplifier – Zach Poff
Building your own Piezo-Preamp – The Center for Haptic Audio Interaction Research
LOM knowledge base: research:contact_mics
Piezo Preamps
Piezo Element Amplifier for Guitar and Violin - Electronics-Lab.com
Metal Marshmallow II Piezo Disc Contact Mic and Preamp - Etsy
Simple Contact Microphone
Building (or Buying) Contact Mics – Zach Poff
A 5-channel mixer / preamplifier for piezo disks by Godfried-Willem Raes
Building (or Buying) Contact Mics – Zach Poff
Guitar Contact Microphone Preamp : 7 Steps - Instructables
Guitar Contact Microphone Preamp : 7 Steps - Instructables
