Erectifier works as a doubler, demented phaser or exciter. It is designed to widen and "phatten" your sound, although it is capable of being a very demented beast as well.
You have an LFO that controls how long back an echo is. You can set the length and speed of this LFO. Then there is a filter that can be LowPass, HighPass or Allpass, and a cut Hz so that you can control where the cut is. The distortion is to "gritt" up the sound a little, or a lot, it's not the world's best distortion. Then you can amplify the signal, if you want to. The filter can cut away a lot of the volume, that's why we have it. Then finally there is a on/off. There are two to the left side and two on the right side. And finally one dry through parameter. So if you'd like to test one of your settings, turn the other three off (via on/off parameter) and then tweak away. There are a few presets (plus a random-function).