Boss XS-100 Poly Shifter Pedal

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 customisation 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 colours. 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 favourite setups are always ready when you need them.

Key Features

• Advanced pitch-shifting workstation - The XS-100 utilities class-leading pitch shifting effects for guitar and bass, powered by new Boss algorithms for a clear response and natural feel that retains the fundamental sound character as well as deep control options and an eight-octave range!
• Effortless in use - Its smooth onboard pedal with integrated toe switch provides linear pitch control across +/- four octaves, providing seamless use straight out the box. With its adjustable pedal curve and response, and fully customisable toe switch, footswitches and momentary pitch changes, configuring the XS-100 couldn’t be easier.
• Seamless I/O - Integrate this pitch shifter to any rig thanks to its versatile ins and outs, including a dedicated analogue output that mirrors the input signal as well as TRS MIDI, USB and inputs for an additional two footswitches for even more control on the fly.

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 artefacts 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.

Customise and Save

The XS-100 gives you the tools to shape pitch effects with precision and personality. Customise 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 dialled 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.

Specifications

• AD conversion: 24 bits + AF method (AF method (Adaptive Focus method) This is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD and DA converters. )
• DA conversion: 32 bits
• Sampling Frequency: 48 kHz
• Memories: 30
• Nominal input level INPUT: -10 dBu
• Maximum Input Level: INPUT: +7 dBu
• input impedance: INPUT: 2.2 MΩ
• Nominal output level: OUTPUT: -10 dBu
• Maximum output Level: OUTPUT: +7 dBu
• Output impedance: OUTPUT: 1 kΩ
• Recommended load impedance: OUTPUT: 10 kΩ or greater
• Bypass: Buffered bypass
• Controls: EFFECT switch, TUNE DOWN switch, SELECT knob, EFFECT button, MEMORY button, EXP1 pedal
• Display: Graphic LCD (64 x 32 dots, backlit LCD)
• INPUT jack: 1/4-inch phone type
• THRU jack: 1/4-inch phone type
• OUTPUT jacks: 1/4-inch phone type
• CTL1, 2/EXP2 jack: 1/4-inch TRS phone type
• USB port: USB Type-C(R)
• MIDI (IN, OUT) connectors: Stereo miniature phone type
• DC IN jack
• Power supply: AC adaptor
• Current draw: 160 mA
• Power consumption when in OFF mode (when the power automatically turns off): 0.1 W
• Dimensions: 147 (W) x 230 (D) x 72 (H) mm, 5-13/16 (W) x 9-1/16 (D) x 2-7/8 (H) inches
• Maximum height: 147 (W) x 230 (D) x 96 (H) mm, 5-13/16 (W) x 9-1/16 (D) x 3-13/16 (H) inches
• Weight: 1.7kg, 3 lbs 12 oz
• Accessories: AC adaptor, Leaflet (“USING THE UNIT SAFELY”, “IMPORTANT NOTES” and “Information”), Rubber foot x 4
• Options (sold separately): Footswitch: FS-5U, Dual footswitch: FS-6, FS-7, Expression Pedal: EV-30, FV-500L, FV-500H, Roland EV-5, MIDI/TRS connecting cable: BMIDI-5-35, BMIDI-1-35, BMIDI-2-35, BCC-1-3535, BCC-2-3535
• 0 dBu = 0.775 Vrms