BOSS XS-100 Poly Shifter

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.

• Seamless pitch shifting with on-board expression pedal, combined with drop/capo retune capabilities
• Brand-new algorithm leverages ultra-fast attack and response, preserving clarity, technique, and instrument character
• Polyphonic pitching delivers stunning, glitch-free performance, even when playing full chords or fast melodic lines
• Extensive side parameters let you fine-tune the pedal's behavior to suit your unique playing dynamics and technique.
• Since it's a natural-sounding pitch shifter, it pairs well with other effects
• Fully supports bass frequencies
• Durable design ensures stable operation for gigging
• With dual pitch-shift options, the expression pedal offers seamless, real-time transitions, while the Tune Down switch delivers instant interval leaps.
• Effect switch enables expression pedal control with up to ±4 octaves of range. Plus, the toe switch (EXP1) can be assigned to functions like instant pitch shifts for enhanced live performance control.
• Tune Down switch lets you instantly retune or engage the Detune function, adding subtle pitch variations up to ±50 cents.
• Expression pedal curve can be adjusted to suit the player’s preference
• Recallable 30 memories to control over several settings
• Easy to edit detailed parameters with graphic LCD
• MIDI I/O for comprehensive control
• CTL 1, 2/EXP 2 jack provides optional external footswitch or expression pedal control for assigned functions such as effect volume and memory switching
• Independent analog dry through output