BOSS XS-100

Standard Features
Advanced pitch-shifting workstation with deep control options and an eight-octave range
Total pitch control for guitar and bass
Class-leading pitch shifting quality realized with new BOSS algorithms
Clear response and natural feel that retains the fundamental sound character
Smooth onboard pedal with integrated toe switch provides linear pitch control across +/- four octaves
Fixed pitch settings in semitone steps across eight octaves for drop tunings, capo effects, and otherworldly tones
Detune function (+/- 50 cents) to create rich doubling effects
Adjustable pedal curve and response
Fully customizable toe switch and footswitches for momentary pitch changes, instant retuning, and more
Clear display for editing sounds and 30 memories for storing favorite setups
Dedicated analog output that mirrors the input signal
Connect up to two footswitches or an expression pedal for extended control
TRS MIDI I/O for external control and sending MIDI commands with the pedal and footswitches
USB connector for system updates

Unrivaled Dynamic Pitch Expression
The XS-100 Poly Shifter redefines pedal-based pitch shifting with groundbreaking BOSS technology years in the making. Delivering natural sound, precision tracking, and deep customization options, this powerhouse expression machine transforms how you perform with pitch. Glide up or down four full octaves with the ultra-smooth pedal to infuse your music with evocative new colors. Enhance solos by triggering bold shifts with a single footswitch press. Instantly retune your instrument with drop tunings, capo simulations, and more. And with onboard memories, your favorite setups are always ready when you need them.

Natural Sound with Advanced BOSS Technology
In developing the XS series, BOSS engineers pioneered new methods to advance real-time pitch shifting and eliminate the tonal artifacts common in conventional designs. Powered by finely tuned algorithms and a specially selected DSP platform, the XS-100 provides balanced polyphonic performance that feels natural and musical across all playing styles, pickup positions, and pedal setups. Your instrument’s attack and tonal character are fully preserved, and even complex chords and sustained lead tones—typically a challenge for pitch shifters—are reproduced with stunning clarity.

Total Pitch Control
With the XS-100 underfoot, you’re in full command of nearly any pitch effect imaginable. The responsive pedal offers linear control of four octaves up or down, and independent pitch-change speeds for each pedal direction make it easy to produce motor revving tones and other interesting effects. At the end of the pedal’s travel, you can use the integrated toe switch to introduce momentary pitch jumps with adjustable range and rise/fall time. Two footswitches are also available to bypass the pedal shift and quickly retune your instrument at fixed semitone steps across eight octaves.

Customize and Save
The XS-100 gives you the tools to shape pitch effects with precision and personality. Customize the pedal’s range for different songs or techniques and fine-tune the response curve to suit your playing style. Freely reassign the toe switch and footswitches to alternate functions. Craft rich doubling effects with the detuning option and explore many other ways to refine your sound. Once everything’s dialed in, save your setup to one of 30 memories for instant recall during live sets or studio sessions.

Integrate with Every Rig
Filled with flexible connectivity, the XS-100 flows with every performance setup. Up to two external footswitches or an expression pedal are supported, expanding your real-time control options. MIDI I/O opens the door to more advanced applications, from external MIDI control to sending MIDI commands with the pedal and footswitches. There’s also a secondary output that mirrors the input signal, providing parallel routing flexibility for sophisticated rigs.

Size and Weight
Width 147 mm
Depth 230 mm
Height 72 mm
Maximum height 96 mm
Weight 1.7kg