I was flippin through my musician's friend magazine, and I saw a pedal called a PS-5 Super Shifter by Boss. This is the description: <i>Does what no other compact pedal has done before: shifts (basic or intelligent), harmonics, <b>de-tuning</b>, and a variety of whammy-type tremolo arm effects. Simple knob based controls. Use as an optional expression pedal to shift pitch in real time</i> Does the de-tuning part mean that it can make the instrument sound like it's tuned lower? If so, then I say it's worth the money. I believe it's for guitar, would it work for bass? If not, are there any de-tuning effects for bass?