Hardware Blog: SC-1 Mic Preamp Kit - Blog - Octopart
Dynamic Mic Preamplifier Circuit
Transistor mic preamp | diyAudio
FiveFish Audio - X-12 Mic Preamp Kit
THAT Thing” — A Solid-State Mic Preamp Project - Radio World
Build a tube Mic Pre: Build Your Own Two Channel Vacuum Tube Mic Preamp! | Tape Op Magazine | Longform candid interviews with music producers and audio engineers covering mixing, mastering, recording