I highly recommend a condenser mic to use with it though. At first I was using my Shure 58 but then I got an AT2020 and suddenly all speech became crystal clear.

A good microphone is good for sure, but more important is the "pre-treatment" of the microphone signal before you send it to the vocoder. I recommend for voice the following signal chain

preamp->multiple->EQ-> c ompressor-> n oisegate-> voco der(modulator -in)
           |                         /
        multiple------------ > n g-sidechain

The EQ should increase the range between 800Hz and 3000Hz, the low end (below 100Hz) should be dropped.


Florian