Boss XS-100 and XS-1 Poly Shifter demo: polyphonic pitch-shifting to rival the Whammy?

Guitar World's Pete Emery tests the Boss XS-1 and XS-100 Poly Shifter pedals. These polyphonic pitch-shifters allow you to create sweeping pitch bends, fast-tracking drop tunings, harmony effects and more at the flick of a switch.