Microphone Preamp
Discrete, Op-amp, and IC based preamp options... Some skiffable, some are a little unwieldy. Note that this is not the final panel... There wasn't room for a 1/4" input behind the panel, so that's removed. That's fine though since the DI input bypasses most of the useful preamp circuit.
Available as an assembled module and as a DIY project.
No info about availability.