CUI Devices' MEMS microphone and electret condenser microphone (ECM) development kits consist of four independent microphone evaluation circuits for easier prototyping and design testing. These four detachable evaluation circuits each offer a different microphone configuration allowing users to quickly select the best option for their application. The MEMS microphone kit includes two analog output MEMS microphones and two digital output MEMS microphones, each with both top and bottom sound port options. The ECM kit includes one noise cancelling ECM, an ECM for unidirectional sound capture, an omnidirectional ECM, and an analog output MEMS microphone with two pin connections that can serve as a drop-in replacement for ECMs.