An electronic circuit or stand-alone device that boosts microphone input. A mic preamp is used to adjust the volume of the signal sent to powered speakers or an amplifier. Unlike a phono preamp ...

[Marian] sent in his sweet little Mic preamp that he built for his iPod touch. He built the circuit on the legs of a TLC272 OP-Amp with SMD components. The whole thing actually fits inside the ...