Boss XS-1 Poly Shifter Effects Pedal

FEATURES

• Compact polyphonic pitch-shifting pedal with natural tone retention
• Retune instantly without changing instruments
• Up to 6 octaves of pitch shifting (±3 octaves up or down)
• Shift knob selects between 1–7 semitones or 1–3 octave intervals
• Detune mode adds subtle doubling-style richness (±20 cents)
• Shift Up mode provides capo-style key changes for alternate tunings or tapping techniques
• Glitch-free performance with chords, single notes, and fast passages
• Balance knob for easy wet/dry signal control
• Toggle/Moment switch enables latch or momentary operation
• External footswitch support for up to three tunings on demand
• Expression pedal compatibility for real-time pitch bending effects

*Includes 9V battery - 9V power supply sold separately

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DESCRIPTION

The BOSS XS-1 Poly Shifter brings the power of advanced pitch-shifting into a compact pedal, delivering unmatched flexibility and ease of use for guitarists and bassists. With a brand-new algorithm, the XS-1 offers seamless tracking that preserves your instrument’s natural character, whether you’re jumping octaves, detuning for heaviness, or exploring creative new textures.

Players can instantly re-pitch their instrument, perform heavy drop-tuned riffs, or craft harmonized solos without switching guitars. The intuitive Shift knob makes it easy to set semitone or octave intervals, while dedicated modes offer capo-style key changes and subtle detune effects. The Balance control allows quick blending of dry and shifted signals for polished tones.

Built for live performance, the XS-1 includes both latching and momentary operation modes, with support for external footswitches and expression pedals to expand real-time control. Compact, reliable, and designed for both guitar and bass, the XS-1 is a modern pitch-shifting solution that keeps up with the demands of today’s creative players.

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SPECIFICATIONS

• AD Conversion: 24 bits + AF method (Adaptive Focus)
• DA Conversion: 32 bits
• Sampling Frequency: 48 kHz
• Nominal Input Level: -20 dBu
• Maximum Input Level: +7 dBu
• Input Impedance: 1 MΩ
• Nominal Output Level: -20 dBu
• Maximum Output Level: +7 dBu
• Output Impedance: 1 kΩ
• Recommended Load Impedance: 10 kΩ or greater
• Bypass: Buffered bypass

Controls

• Balance knob
• Shift knob
• Pedal mode switch
• Shift direction switch
• Pedal switch

Indicators

• Check indicator (also used for battery status)

Connectors

• Input jack: 1/4-inch phone type
• Output jack: 1/4-inch phone type
• CTL/EXP jack: 1/4-inch TRS phone type
• DC In jack

Dimensions & Weight

• 2-7/8" (W) x 5-1/8" (D) x 2-3/8" (H)
• Weight: 15oz

Accessories

• Alkaline battery Included
• Leaflet (“Using the Unit Safely,” “Important Notes,” and “Information”)

Options (sold separately)

• AC adaptor: PSA series
• Footswitch: FS-5U
• Dual Footswitch: FS-6, FS-7
• Expression Pedal: EV-30, FV-500L, FV-500H, Roland EV-5

*Includes 9V battery - 9V power supply sold separately