BOSS XS-100 Poly Shifter Pitch-Shifting Expression Pedal

BOSS XS-100 Poly Shifter Pitch-Shifting Expression Pedal

The BOSS XS-100 Poly Shifter is an advanced guitar and bass pitch-shifting effects pedal with an integrated expression pedal, eight-octave total range, and 30 onboard memories. It delivers real-time shifts up or down four octaves, fixed semitone retuning, and detuning within +/-50 cents for performance, recording, and creative sound design.

Designed for guitarists and bassists who need expressive polyphonic pitch control, the XS-100 handles chords, sustained notes, drop tunings, capo-style changes, octave sweeps, and subtle doubling effects. Independent rise and fall settings shape pedal transitions, while the integrated toe switch and two footswitches can be reassigned for customized real-time control.

The XS-100 uses 24-bit plus AF-method A/D conversion, 32-bit D/A conversion, and a 48 kHz sampling rate. A backlit 64 x 32-dot LCD supports editing and memory recall. Its connectivity includes instrument input, analog thru, output, external control/expression input, TRS MIDI I/O, and USB-C for system updates, making it suitable for sophisticated pedalboard and MIDI-controlled rigs.

Key Features

• Eight-Octave Pitch Range: Provides fixed semitone shifts across an eight-octave span for alternate tunings, capo effects, and experimental sounds.
• Integrated Expression Pedal: Sweeps pitch continuously up or down four octaves with adjustable response and transition behavior.
• Polyphonic Processing: Supports chords, melodic lines, and sustained notes with real-time pitch shifting for guitar and bass.
• Detune Function: Adjusts pitch within +/-50 cents for subtle doubling and modulation-style effects.
• 30 Memories: Stores customized pitch settings for quick recall during performances and recording sessions.
• Assignable Controls: Integrated toe switch and footswitches can trigger retuning, pitch changes, effect switching, and other functions.
• Flexible External Control: Supports up to two external footswitches or one additional expression pedal.
• MIDI and USB Connectivity: TRS MIDI input/output enables external control, while USB-C supports system updates.

Technical Specifications

• Model: XS-100
• Product Type: Polyphonic pitch-shifting effects pedal
• Compatible Instruments: Guitar and bass
• Pitch Range: Eight octaves total
• Expression Pedal Pitch Range: +/-4 octaves
• Fixed Pitch Adjustment: Semitone steps across eight octaves
• Detune Range: +/-50 cents
• Memories: 30
• A/D Conversion: 24-bit plus AF method
• D/A Conversion: 32-bit
• Sampling Frequency: 48 kHz
• Nominal Input Level: -10 dBu
• Maximum Input Level: +7 dBu
• Input Impedance: 2.2 megohms
• Nominal Output Level: -10 dBu
• Maximum Output Level: +7 dBu
• Output Impedance: 1 kilohm
• Recommended Load Impedance: 10 kilohms or greater
• Bypass: Buffered bypass
• Controls: EFFECT switch, TUNE DOWN switch, SELECT knob, EFFECT button, MEMORY button, EXP1 pedal
• Display: 64 x 32-dot backlit graphic LCD
• Input: 1 x 1/4" phone jack
• Thru: 1 x 1/4" phone jack
• Output: 1 x 1/4" phone jack
• External Control Input: 1 x 1/4" TRS CTL1, 2/EXP2 jack
• MIDI: Stereo miniature TRS input and output
• USB: USB Type-C
• Power: AC adapter
• Current Draw: 160 mA
• Power Consumption in Automatic Off Mode: 0.1 W
• Dimensions: 9.1 x 5.8 x 2.8" (D x W x H)
• Maximum Height: 3.8"
• Weight: 3.7 lb

What's In the Box

• BOSS XS-100 Poly Shifter
• AC Adapter
• 4 x Rubber Feet
• Safety, Important Notes, and Information Leaflet