I gave it a try on Digitech RP355 The octave drop is calibrated in 99 increments. At 1 instead of 0 detuning is small and pleasant. But uning 98 instead of 99 is too large an increment and is not musically pleasing. Lesson learned, and curiosity satisfied. Robert Hale serious honkage in Mesa, Arizona youtube.com/DUKEofWAIL DUKEofWAIL.com