Of all my children, this is the one that took longest to conceive. (8 months of R&D)
There are many things that make this one different from any other in the line.
For one thing it runs on 2 X AA batteries, super cool concept which allows the pedal to run cooler and last forever. But don't worry, you don't have to get a 3 volt charger since the voltage for the adapter is being reduced INSIDE the pedal, and your standard 9 voltswall-wart will work fine.
Now for the sound. I wanted to emulate the fattest lead sound possible and the smoothest ever. I kept thinking of Leslie West at his peak and how his guitar sounded like 3 guitars when he did his leads.
This pedal is not for noodlers or posers, but for precise and professional players who want to destroy. It is a total redesign of old technology which had a lot of flaws since it was too early for its time. I cleaned everything up with later designs but left one position on the frequency selector ( the highest ) for the real early fuzz effects in case you want to use it.