Electret Mic Preamp : 7 Steps (with Pictures) - Instructables
simple condenser mic preamp circuit - ElecCircuit.com
CIRCUIT060016 Design tool | TI.com
Electret Microphone Circuit
Low noise Mini Electret Microphone PreAmplifier - Electronics-Lab.com
Project 122
DIY JFET Mic Pre: DIY JFET Mic Preamp and Beyond! | Tape Op Magazine | Longform candid interviews with music producers and audio engineers covering mixing, mastering, recording and music production.