Th on board effects include Antares' mic modelling and valve emulation, followed by Auto-Tune real-time pitch correction. Then there is a variable-knee compressor, an expander/gate, a tuneable de-esser, a two-band equaliser (which is far more flexible than it sounds), and an automatic double-tracking facility (using Auto-Tune to create the second voice).
There is the Sound On Sound review >ANTARES<
E&oe
MG