Anyone know of any good circuits for making a pre-amp for a microphone?Or, alternatively, I know the oldschool apple microphones had the funny plug since ...

This mic preamp uses the low noise IC uA739. The circuit is an example of how a good preamplifier can be designed for dynamic microphones. The IC houses two identical integrated preamp circuits. The ...

Last November, within a “microphone fundamentals” writeup of mine, I mentioned that an Audio-Technica AT2040 dynamic microphone I’d recently acquired had required additional signal boosting ahead of ...