Can I use the Sub 'N' Up Octaver to create a Whammy effect?
Mainly no, with a bit of yes. The typical Whammy effect gets its character not only by adding pitch effects, but by being able to dynamically alter the pitch using an expression pedal. The Sub 'N' Up Octaver does not have the ability to use an expression pedal to alter its pitch, so it cannot fully mimic a Whammy effect. However, you can toggle the Sub 'N' Up Octaver on and off to allow you to jump between your normal dry sound and the pitch altered sound. Doing this brings you closer to a Whammy effect, but not all the way there.