For players who grew up in the ’90s, the Whammy pedal was everywhere—but so were its limitations. Single-note pitch dives ruled, while chords often fell apart. Boss’s new XS-series Polyshifters take aim at that history, promising modern polyphonic tracking that handles full chords, wide intervals, and more experimental ideas with far more stability.
In this video, Jake breaks down the Boss XS-1 and XS-100, focusing on who each pedal is for rather than treating them as one-size-fits-all replacements. Both share similar pitch-shifting algorithms and deliver clean, convincing chord tracking—effectively acting like a virtual capo that can shift your entire signal up or down without rewriting your muscle memory.
The XS-1 keeps things simple and compact, offering fixed semitone and octave shifts with minimal fuss. The XS-100 expands on that idea with a built-in expression pedal, MIDI control, deeper interval options, and presets, turning pitch shifting into something you can actively perform rather than just switch on and off.
Both pedals also include a detune mode that adds subtle detuning for chorus-like textures, and they hold up surprisingly well when pushed into lower octaves, stacked effects, or even non-guitar sources like synths. Whether you want a dependable utility pedal or an expressive pitch-shifting instrument, Boss’s XS Polyshifters make a strong case that the Whammy is no longer the only game in town.