The BOSS XS-100 Poly Shifter takes everything that made the XS-1 essential and pushes it to an entirely new level. With a huge four-octave range, built-in expression pedal, onboard memory, and deep connectivity, the XS-100 is the most powerful polyphonic pitch-shifter BOSS has ever made. Whether you’re looking for instant alternate tunings, smooth glissandos, layered harmonies, or bold experimental textures, this flagship pedal delivers pristine, low-latency performance while preserving the natural character of your guitar or bass.

Designed for both stage and studio, the XS-100 features 30 user presets, MIDI I/O, USB-C for updates, and flexible routing with analog dry-through. Its LCD interface and quick-edit controls make dialing in tunings, pitch bends, and effect parameters fast and intuitive, while the integrated expression pedal with toe-switch allows for real-time control of pitch sweeps and dynamics. From subtle detune to dramatic ±4-octave shifts, the XS-100 is built to inspire creativity and handle any performance scenario.

Features

• Flagship polyphonic pitch-shifter pedal with next-generation BOSS algorithm
• Massive ±4-octave range with ultra-fast, artifact-free tracking
• Built-in expression pedal with assignable toe-switch for dynamic control
• 30 onboard memory slots for saving and recalling custom presets
• Quick Edit screen for instant tuning, pitch bend, and expression settings
• Fine-tune wet/dry balance, response curves, and detailed pitch parameters
• Full MIDI I/O and USB-C connectivity for updates and external control
• Independent analog dry-through for uncompromised tone
• Supports additional footswitches and expression pedals
• Durable BOSS chassis built for touring and professional use

• Pedal Type: Polyphonic Pitch Shifter with Built-In Expression
• Pitch Range: ±4 Octaves
• Presets: 30 User Memories
• Controls: Expression Pedal with Assignable Toe-Switch, Shift, Balance, Quick Edit (Pitch, Tuning, Expression)
• Inputs: 1 x 1/4" instrument, 1 x 1/4" for external footswitch/expression, MIDI In
• Outputs: 1 x 1/4" audio, MIDI Out, USB-C (updates/control)
• Bypass: Buffered Bypass with Analog Dry-Through
• Display: LCD Screen
• Power: 9V DC power supply (sold separately)
• Additional Features: Assignable pedal response curves, Detune mode, Capo/Retune functions, Expression pedal pitch-bend control
• Construction: Rugged BOSS chassis, designed for professional touring