Polyphonic shifting without compromise

The Boss XS-100 Poly Shifter is built to handle everything from big chords to fast runs without breaking a sweat. Its advanced algorithm tracks each note with precision, giving you smooth, natural pitch-shifted tones that stay in tune no matter how complex your playing gets. From adding a simple harmony line to building huge walls of sound with stacked octaves, the XS-100 makes pitch effects feel musical and inspiring rather than artificial.

Expression pedal for total control

At the heart of the XS-100 is a built-in expression pedal that puts shifting right under your foot. You can sweep through intervals in real time, create dramatic dives and climbs, or use the toe switch to trigger instant jumps up or down an octave. With the ability to fine-tune the response curve, the pedal adapts to your style, making it a powerful extension of your playing technique. It’s a hands-on way to bring movement and expression into your sound.

Instant retunes and creative options

The dedicated Tune Down switch makes it simple to change tuning on the fly, acting like a virtual capo or giving you quick drop-tuning without touching your guitar’s pegs. It can also engage a subtle detune effect for adding width and texture to your tone. Combined with dual pitch-shift control, you can create layered harmonies, jump between intervals mid-song, and explore new musical ideas without missing a beat.

Built for the stage and studio

With its rugged metal chassis, bright LCD display, and modern connectivity, the XS-100 is designed to fit seamlessly into any rig. It offers USB-C for updates and MIDI I/O for advanced control, while external footswitch or expression inputs expand your options even further. Thirty memory slots let you save your favourite setups, and the buffered bypass ensures your tone stays strong when the effect is off. Reliable, versatile, and road-ready, it’s a pitch shifter that inspires confidence wherever you play.

Specifications

• Product Name: Boss XS-100 Poly Shifter
• Product Code: XS-100

Construction

• Dimensions: 147 (W) x 230 (D) x 72 (H) mm / up to 96 mm max height
• Weight: 1.7 kg (3 lbs 12 oz)
• Display: Graphic LCD (64 x 32 dots, backlit)
• Chassis: Rugged metal housing with rubber feet

Connectivity

• Input jack: 1/4-inch
• Thru jack: 1/4-inch
• Output jacks: 1/4-inch
• CTL1/2, EXP2 jack: 1/4-inch TRS
• USB port: USB Type-C
• MIDI connectors: In/Out (stereo mini type)

Electronics

• AD conversion: 24-bit + AF method
• DA conversion: 32-bit
• Sampling frequency: 48 kHz
• Memories: 30 user patches
• Nominal input level: -10 dBu
• Maximum input level: +7 dBu
• Input impedance: 2.2 M?
• Nominal output level: -10 dBu
• Maximum output level: +7 dBu
• Output impedance: 1 k?
• Recommended load impedance: 10 k? or greater
• Bypass: Buffered bypass
• Controls: EFFECT switch, TUNE DOWN switch, SELECT knob, EFFECT button, MEMORY button, EXP1 pedal
• Power supply: AC adaptor (included)
• Current draw: 160 mA
• Power consumption (OFF mode): 0.1 W
• Accessories: AC adaptor, information leaflets, rubber feet x 4