This Electret Condenser Microphone is meant to be used with the Teensy Audio Adaptor. The microphone is PUI Audio part AOM-6738P-R.A custom laser cut washer is included, for convenient mounting to the Teensy Audio Adaptor. https://elecena.pl/product/27743036/pjrc-electret-condenser-microphone 2025-01-23 https://elecena.pl/product/27743036/pjrc-electret-condenser-microphone 2025-03-14 https://elecena.pl/product/27743036/pjrc-electret-condenser-microphone 2026-02-21 https://elecena.pl/product/27743036/pjrc-electret-condenser-microphone 2026-04-12