Boss XS-1 Pitch Shifter

The Boss XS-1: Advanced Polyphonic Pitch Shifting in a Compact Stompbox

Next-Gen Pitch Shifting Pedal for Guitar and Bass

The Boss XS-1 Poly Shifter is a new breed of pitch-shifting pedal engineered for players who demand clarity, precision, and creative freedom. Built around a next-generation algorithm and decades of Boss innovation, the XS-1 delivers polyphonic pitch effects that stay perfectly locked to your tone, whether you're chording, ripping leads, or running rapid single-note lines. It's glitch-free, ultra-responsive, and musical enough to pair well with virtually any other effect in your signal chain.

Seamless Retuning Without Switching Guitars

Gone are the days of dragging multiple guitars to the gig just to get alternate tunings. The XS-1 allows instant pitch changes across three octaves, up or down, while preserving your tone's natural feel and attack. Shift into drop tunings for thunderous riffs, simulate a capo for alternate voicings, or dive into ambient territory with dramatic pitch bends using an expression pedal. Whether you're a guitarist or bassist, the XS-1 adapts to your sound without compromise.

Capo Mode, Detune, and Octave Magic

The Shift knob offers fast selection of semitone or full-octave intervals, while the Shift switch gives you instant access to upward shifts, downward shifts, or subtle detuning. Need a quick capo function for a different key? Flip to Shift Up mode. Want to thicken up a solo or emulate a bass line? Drop an octave. The Detune setting delivers rich, chorus-like textures perfect for studio depth or live stage presence.

Pro-Level Control in a Compact Format

Despite its compact size, the XS-1 offers serious flexibility. Toggle between momentary and latching operation modes to suit your performance style. Use an external footswitch to cycle through up to three different pitch settings on the fly. For expressive players, the pedal also supports real-time pitch control via expression pedal, ideal for dynamic dive bombs or slow, sweeping intervals.

Designed for the Rigors of the Road

From the tank-tough enclosure to the intelligent switching and intuitive layout, the XS-1 is ready for the real world. Whether you're in the rehearsal room, recording studio, or on stage, this pedal performs consistently under pressure while opening new doors to sonic experimentation.

Specifications

• Polyphonic pitch shifting from three octaves down to three octaves up

• Detune mode adds subtle depth (+/- 20 cents)

• Shift knob for semitone and octave interval control (1–7 semitones, 1–3 octaves)

• Balance knob for dry/wet mix control

• Shift switch (Up, Down, Detune)

• Toggle/Momentary switch for flexible activation

• Expression pedal input for real-time pitch control

• Supports external footswitch control (up to three tunings)

• Fully compatible with bass instruments

• Runs on 9V battery or optional PSA-series power supply

• Included: Box, Manual

• Power Supply Not Included

This effects pedal ships fully insured with signature required.