The Tiny Mic Pre-Amplifier project is based on a single transistor. It amplifies the output of the electret condenser microphone. The project amplify low level signal coming from microphone and then provide sufficient voltage level to drive power audio amplifier. Good choice for Karaoke.
Power supply : 5 ~ 9 VDC @ 2 mA
PCB dimensions 26 mm x 56 mm
