Shape- Selects six different LFO shapes to modulate the phaser. Sine- Sounds great for vibe tones, especially at medium to higher speeds. Triangle- The classic LFO shape for most phasers offering smooth balance modulation. Triangle/Square- A slow triangle with a faster square LFO as well. Mixing jagged steps with a more traditional sound. Random sample/hold- Completely random step modulation. 8 step- Similar to the random LFO, but arranged in an 8 step triangle sequence. 16 step- Similar to 8 Step, but a longer sequence. Speed- Controls the phaser modulation speed. Regen- Controls the feedback and intensity of the effect.