I recently posted this elsewhere:
Astatic 332 crystal omni mic made for recording.
I have an MXR EQ (6 band version) pedal and a octave/fuzz pedal. I can make my voice sound 8 bit.
I also just picked up a vintage Teac EQ w/ 10 bands and 2 channels. I'd like to stick this EQ before and after the octave/fuzz to really tweak it out.
Forgot to mention I'm using a compressor after the preamp. Nothing extreme. You can always use a compressor the squash the 'you-know-what' out of anything.
The Teac sounds really good, especially running like say, a drum machine or synth and making it sound lo-fi.