Amazon.com: Guitar Pickup with Volume Control, Piezo Contact Microphone Transducer for Guitar, Mandolin, Banjo, Cello, Kalimba, Harp and Other Stringed Instrument : Musical Instruments
Building (or Buying) Contact Mics – Zach Poff
Contact microphone - Wikipedia
5pcs Adeline AD-20 Piezo Contact Microphone MIC Pickup For Guitar Violin Banjo | eBay
Amazon.com: Metal Marshmallow Piezo Contact Mic (White +14dB) : Musical Instruments
How to Make a Contact Microphone : 4 Steps - Instructables
SWAMP Piezo Contact Microphone Pick Up | SWAMP
Metal Marshmallow II Piezo Disc Contact Mic and Preamp - Etsy
LOM knowledge base: research:contact_mics
Contact Mics Contact Microphones Piezoelectronic Transducers Piezo Microphones Weirdo Gadgets Designed by Crank Sturgeon Manufactured by Huso Solutions since 2007