Boss XS-100 Poly Shifter - Effect pedal / polyphonic Pitch Shifter, designed for guitarists and bassists who want to take pitch control in real-time to a new level. With an extended range of four octaves up or down, controlled linearly via the integrated pedal, the XS-100 offers a wide range of expressive effects — from linear transpositions to dramatic pitch jumps.
The pedal allows different pitch change speeds for each direction, creating effects like "motor revving." An integrated switch enables quick triggering of pitch jumps, with control over the interval and rise/fall time. Two dedicated footswitches provide instant access to fixed tunings in semitone steps, covering up to 8 octaves.
With 30 internal memories, full MIDI control, support for external pedals and footswitches, plus a parallel output for complex routing, the XS-100 becomes an essential tool in modern stage or studio setups.
Features:
Advanced pitch shifting workstation, with a full range of 8 octaves
Full control of pitch for guitar, bass, and other instruments
Top-quality pitch shifting effect, thanks to new BOSS algorithms
Clear and natural response, preserving the instrument's tonal character
Integrated expressive pedal, with linear pitch control over ±4 octaves
Integrated toe switch for instant pitch jumps with adjustable interval and rise/fall time
Detune function: ±50 cents – for rich doubling effects
Fixed pitch settings in semitone steps across the entire 8-octave range – for dropped tunings, capo effects, or experimental sounds
Adjustable curve and response of the pedal, to adapt to playing style
Fully customisable functions for toe switch and footswitches
Backlit LCD display, for clear and quick editing
30 onboard memories for saving and quickly accessing favourite setups
Dedicated analog output (THRU) that reflects the input signal – ideal for parallel routing
Extended connectivity: supports up to 2 external footswitches or one expression pedal
TRS MIDI I/O – for external control or sending MIDI commands from the pedal and footswitches
USB-C port for firmware updates
Active buffer bypass
Technical Specifications:
Number of memories: 30
AD conversion: 24-bit + AF method (Adaptive Focus – Roland/BOSS technology for improved signal-to-noise ratio)
DA conversion: 32-bit
Sampling frequency: 48 kHz
Controls and Functions:
Switches:
EFFECT (effect on/off)
TUNE DOWN (quick transposition in semitone)
Button:
MEMORY (preset selection)
EFFECT (edit effects)
Knob:
SELECT (menu navigation)
Integrated expression pedal (EXP1) with toe switch
Backlit graphic LCD display (64 x 32 dots)
Sound Level / Impedance:
Nominal input level: -10 dBu
Maximum input level: +7 dBu
Input impedance: 2.2 MΩ
Nominal output level: -10 dBu
Maximum output level: +7 dBu
Output impedance: 1 kΩ
Recommended load impedance: ≥10 kΩ
Connectors:
INPUT: 1/4” mono jack
OUTPUT: 1/4” mono jack
THRU: 1/4” mono jack (direct output without effect)
CTL1,2 / EXP2: 1/4” TRS jack (for external footswitches or expression pedal)
