It clips at ridiculously low levels, basically it has 28mV of headroom to deal with an input that could be as high as 1800mV
http://www.geocities.com/ferocious_1999/md/micpreamp2.html
Amplification 35 dB, flat frequency response from 20 Hz to 20 kHz
http://www.tkk.fi/Misc/Electronics/circuits/sbmicamp.html
These are often found inside old 2way radio microphones.
http://members.shaw.ca/novotill/DynamicMicPreamp/index.htm
A microphone amplifier for use with low impedance (~200 ohm) microphones. It will work with stabilized voltages between 9-30VDC.
http://jap.hu/electronic/micamp.html
ideally suited to low impedance (600 Ohm nominal) microphones. One limitation is that it is not balanced.
http://sound.westhost.com/project13.htm
Very simple two transistor circuit.
http://www.ee.washington.edu/circuit_archive/circuits/Micro.GIF
This is a collection of phono (black vinyl for the youngsters) preamps and equalisation circuits, one of which is sure to meet your requirements.
http://sound.westhost.com/project25.htm
This preamp design started out as a conventional three stage cascade with feedback RIAA equalization.
http://www.geocities.com/TimesSquare/1965/phono.html
Amplification 35 dB, flat frequency response from 20 Hz to 20 kHz.
http://www.epanorama.net/circuits/micamp.html
Electret Mic Preamp Schematic Diagram and components
http://www.freeinfosociety.com/electronics/schemview.php?id=377