Cortado Balanced Piezo Contact Mic by Zeppelin Design Labs

[ZDL]

The Cortado is a contact mic that delivers a balanced, buffered output signal properly impedance-matched to your recording device or console for superior bandwidth, signal to noise and frequency response. The Cortado is available ready-to-use as a contact mic (pictured below) or as a DIY kit. The kit can be configured as an instrument pickup or incorporated into a Tin Can Microphone -- see our popular Instructable!
https://youtu.be/p-8UPHHF714

[ZDL]

CORTADO as Instrument Pickup - customer build

"Solarbird" in Oregon built the Cortado as a pickup for her octo-mandolin.