Amazon.com: Dayton Audio UMM-6 USB Measurement Microphone : Musical Instruments
L.A. Sound Panels - This is our Dayton Audio EMM-6 Electret Measurement Microphone. It's used for measurement and critical recording applications. We have been using it for all sorts of things even
EMM-6 Electret Measurement Microphone
Dayton Audio EMM-6 - Electret Measurement Mic | Reverb UK