Position: the main knob to look out for... this sets the area of sounds youre working with... down all the way produces clicking sounds, up all the way is a heavily peaked out sound, and the inbetweens are.... hmm... well...

LFO depth: this sets how much the LFO will sweep the position up and down (as if you were turning the Position knob up and down at a steady rate) [the rate of the LFO is set by the LFO Speed control on the side of the box)

Envelope depth: this sets how much the envelope follower will sweep the position... the attack time of the envelope follower is set by the Attack knob on the side of the box

.... two other knobs are worth detailing: Squelch: this works like a noise gate or a squelch on a CB radio... turn it all the way down and all the noise comes through.. turn it up and up and you need to hit the strings (or make a louder input noise) harder and harder to get the pedal to respond... a good place to have it so that its not in the way is to turn it all the way down and then slowly bring it up until the pedal goes silent when youre not making any input noise..

Input volume (aka Pregain): for guitar or most instruments, if you just leave this knob all the way up, itll be fine... i really thought about pre-setting this when the atoners are made, and not putting a knob for it, but it can be useful sometimes to turn it down...also to use the blend feature, you oughta have this turned up too...

the rest are easy: volume is volume, tone is the tone of the distorted sound, blend mixes in the clean sound with the dirty...