I've had this pedal for quite a while. It's an Allums modded Boss CS-3. I can dial in my Delay, I can dial in my Flanger, my chorus, my reverb, my phaser, my acoustic simulator. I can even dial-in all four channels on a JVM. But can I dial in this thing? No. It's embarassing. Someone please explain how to do this. I know it's supposed to even out volume. I know what the "sustain" part does. But the rest? Not really.