The Boss XS-1 Poly Shifter is a powerful pitch-shifting pedal designed to deliver smooth, musical, and inspiring octave and harmony effects—all in a compact, road-ready enclosure. Whether you’re adding subtle thickness, creating rich polyphonic chords, or diving into bold octave textures, the XS-1 offers exceptional tracking and a wide range of tonal possibilities for guitar or bass.

With intuitive controls and the rugged Boss build you can rely on, the XS-1 is ready for the stage, studio, or any creative setup where layered pitch textures bring your sound to life.

Highlights

• Polyphonic pitch shifting that tracks cleanly across single-note lines and full chords.

• Multiple shift modes for octaves, harmonies, doubling, and creative interval effects.

• Classic Boss ruggedness in a compact stompbox built for long-term reliability.

• Simple, intuitive controls that make dialing in tones fast and musical.

• Ideal for guitar, bass, and modern pedalboard setups needing thickening or pitch-layering effects.

Specifications Specification Detail Product Type Polyphonic Pitch-Shifting Pedal Modes Multiple octave and harmony shift options Tracking Polyphonic Controls Mode selector, Shift, Balance/Mix, Output level (varies by mode) Power Standard 9V DC (center-negative) Compatibility Guitar, bass, and other electronic instruments Construction Boss compact-series metal chassis What Makes It Cool

The XS-1 brings polyphonic pitch shifting into a simple, classic format that feels right at home on any pedalboard. It’s great for players who want clean, chord-friendly shifting without menu diving or complicated setups. From subtle reinforcement to dramatic octave stacks, the XS-1 delivers inspiring textures with the reliability Boss pedals are known for.