simple condenser mic preamp circuit - ElecCircuit.com
GitHub - naufalboys/Mic-Preamp: A simple mic preamp for interfacing a balanced microphone (3-Pin using XLR Connector) with PC Sound Card or other gear. This PCB Design is double sided. If you have
Dynamic Mic Preamplifier Circuit
Microphone Preamplifier Circuit Using TL071 Op-Amp