Here is some wisdom information I’ve collected on the subject of contact microphones. Anything which appears on this page, I have made a solid attempt to vet as worthy of consideration. I’m no expert, merely a sound designer who has done some exploration. I started this page simply to collect my own research, then thought I might as well share. A contact mic will usually consist of two parts: a transducer (typically a piezo disc or film), and an electronic device performing some combination of impedance matching and amplification. The output of this device will connect to a mic pre, recorder, …