Wow ...3 threads at same time for mic amps. "Improved mic amp posted on Rapidshare" "A Better Microphone Amplifier Yet" "Is S.E.D. actually sci.electronics.dummies"
I'm surprised mic amps are a lively topic on here. I thought it would be a beaten to death topic like audio power amplifier design. Also, by now shouldn't the ultimate microphone amp be a well known cookbook circuit?. Ever since "Mary had a little lamb" (history) there's been plenty of time to master mic amps. Is mic amp design still in fuzzy land?
Copying Op Amps to Make Mic Amps I'm sure the best op amp topologies have been thought out by designers. How about just (partially) copying a very good op amp internal design with discrete low noise transistors for the front end mic circuit? I recall somebody posted that it's the IC process that creates noisy transistors in op amps. D from BC