It can. It can do it without an expression pedal, and actually sounds great, but yes, also works with expression pedal.can anyone tell me if the boss ps-5 can do the whammy effect with an expression pedal?the pedal itself needs to be engaged to work and then you can work the expression pedal.i know this question is kind of vague but has anyone tried this?
Uh... mine can do it.yes, it works just fine, just not to the degree (ie adding a 4th and a 7th).