Unleash sweeping octave bends and instant drop tunings with the BOSS XS-100 Poly Shifter, your all-in-one pedal for bold, hands-on pitch control. With its built-in expression pedal, ±four-octave range and ultrafast polyphonic tracking, the XS-100 gives you everything from subtle detune shimmer to massive octave jumps and pitch-bent solos that push your sound into new territory. A bright LCD screen and 30 recallable memories make it easy to store and navigate setups, while MIDI I/O, analog dry-through and 24-bit Adaptive Focus converters keep your tone clean, natural and studio-ready. Whether you’re drop tuning for one song in your set or crafting synth-like harmonies, the BOSS XS-100 puts expressive pitch control right at your feet.

Expression-Driven Performance Power

At the heart of the XS-100 is its smooth, built-in expression pedal, letting you sweep pitch across four octaves up or down with precision. Two onboard footswitches handle instant drop/capo effects, momentary pitch jumps or bypass control, and a Detune mode adds rich doubling for thicker chords and leads. You can tailor the pedal’s response curve to match your playing style, save favorite settings to any of the 30 memories or integrate it into complex rigs through MIDI and external control inputs. Every feature is designed to respond naturally—no lag, no warble—just musical, hands-on control that keeps up with your creativity.

Built for the Stage, Tuned for Musicians

Like all BOSS pedals, the XS-100 is road-ready and built to last, with a rugged chassis, silent footswitches and clear top-panel layout for fast adjustments mid-set. Its analog dry-through path preserves your core tone, while buffered bypass ensures signal strength across large pedalboards. From heavy riffs to lo-fi jams and ambient textures, the XS-100 adapts effortlessly to guitar, bass or synth setups—making it an essential tool for players who want modern pitch power without sacrificing feel. You’ll step on, sweep and hear your instrument in a whole new light.