The BOSS XS-100 Poly Shifter sets a new benchmark in polyphonic pitch-shifting effects. This groundbreaking flagship pedal delivers ultimate flexibility and matchless audio quality while maintaining the instrument’s natural feel and tone. 
Leveraging state-of-the-art technology, this Poly Shifter enables musicians to perform with unparalleled fluidity and precision, from wild octave sweeps to subtle detuning. With boundless creative potential, the XS-100 provides seamless pitch gliding combined with instant drop/capo retune features, and much more. Sporting a rugged, new-look enclosure with a built-in expression pedal and LCD, the XS-100 is a modern pitch-shifting marvel that endlessly inspires.
WHO'S IT FOR?
Guitarists and bassists seeking the ultimate pitch shifter—one that fuels inspiration, delivers pristine sound quality, and retains the true character of their instrument.
1. ULTIMATE EXPRESSION WITH PITCH PERFECTION

• Seamless pitch shifting with on-bord expression pedal, combined with drop/capo retune capabilities


• Brand-new algorithm leverages ultra-fast attack and response, preserving clarity, technique, and instrument character


• Polyphonic pitching delivers stunning, glitch-free performance, even when playing full chords or fast melodic lines


• Extensive side parameters let you fine-tune the pedal's behavior to suit your unique playing dynamics and technique.


• Since it's a natural-sounding pitch shifter, it pairs well with other effects


• Fully supports bass frequencies


• Durable design ensures stable operation for gigging

2. SHIFT YOUR PITCH

• With dual pitch-shift options, the expression pedal offers seamless, real-time transitions, while the Tune Down switch delivers instant interval leaps.


• Effect switch enables expression pedal control with
  up to ±4 octaves of range. Plus, the toe switch (EXP1) can be assigned to functions like instant pitch shifts for enhanced live performance control.


• Tune Down switch lets you instantly retune or engage the Detune function, adding subtle pitch variations up to ±50 cents.


• Expression pedal curve can be adjusted to suit the player’s preference

3. MODERN VERSATILITY

• Recallable 30 memories to control over several settings


• Easy to edit detailed parameters with graphic LCD


• MIDI I/O for comprehensive control


• CTL 1, 2/EXP 2 jack provides optional external footswitch or expression pedal control for assigned functions such as effect volume and memory switching


• Independent analog dry through output