Mic-amps
Mic-amps
Mic-amp 01 - based on Elektor design
PCB & Parts list
When used as mic pre-amp, the RIAA network is not used.
Neuman U47 - Phantom Powered Tube Microphone Amplifier
PAiA Solid state phantom powered amp & extras
Simple balanced mic amp
That 120 Transistor Array in balanced mic amp
(pdf)