Full Phase VST is a very unique effect. It uses an inversion of a stereo channel phased against the opposite corresponding channel to isolate common stereo field characteristics, and then uses a small phase shift network to allow phase “tuning” of your audio via the character slider.

Phase shifts can be accomplished by using the “shift” slider (intensity of the shift) in combination with the Left <-> Right horizontal slider to set the position of the phase. The st. (stereo field) slider is for some mid/side action..