You may get a better result by spending an extra 50 bucks on a second hand Behringer Voice Master pro channel strip. this comes with a built in de-esser and voice optimized EQ and compressor as well as a gate.
However if your desk is a Makey or similar, you probably have better pres on the desk !!
My instructors page and www.studiotrax.net for all things recording.
my toons Brought to you by Dr BadGAS
my toons Brought to you by Dr BadGAS