The BOSS XS-1 Poly Shifter packs cutting-edge performance into a compact pedal. Powered by advanced polyphonic pitch-shifting technology built on decades of expertise, the XS-1 is crafted for musicians who demand precision, flexibility, and ease of use. From faultless octave jumps to subtle detuning, players can perform head-turning pitch effects while preserving their instrument’s natural feel and tone. Designed for effortless creative exploration, this versatile stompbox delivers instant capo functionality, drop tunings for heavy riffs, dramatic tonal shifts, and much more.

Features

• Instant retuning capability without pausing your creativity
  
• Brand-new algorithm leverages ultra-fast attack, preserving clarity, technique, and instrument character
  
• Polyphonic pitching delivers stunning, glitch-free performance, even when playing full chords or fast melodic lines
  
• 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
• Natural pitch shifting with in a range of six octaves (three up to three down)
  
• Shift knob allows users to quickly select between 1-7 semitone or 1-3 octave intervals
  
• Detune mode adds depth and richness to your tones like doubling effect
  
• Shift Up function delivers convenient capo-style operation for changing key in a song or for tapping style performance
  
• Emulate bass instruments on guitar by shifting down one octave
  
• Craft harmonized solos and effects using semitone shifts
• The Balance knob allows quick, easy adjustment between the wet and dry signals
  
• The Shift knob provides effortless control over the pitch shift amount
  
• The Shift switch toggles the pitch between up, down, or slightly detuned (±20 cents)
  
• The Toggle/Moment switch selects between latching the effect on/off or activating it only while the onboard footswitch is pressed
  
• External footswitches allow to control over two different settings, so that you can control three different tunings in total
• Expression pedal allows to control the pitch shift in real- time like dynamic pitch bending effect

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
• Nominal input level 20 dBu
• Maximum Input Level +7 dBu
• input impedance 1 MΩ
• Nominal output level 20 dBu
• Maximum output Level +7 dBu
• output impedance 1 kΩ
• Recommended load impedance 10 kΩ or greater
• Bypass Buffered bypass

Controls

• BALANCE knob
  
• SHIFT knob
  
• PEDAL MODE switch
  
• SHIFT DIRECTION switch
  
• Pedal switch
• Indicator CHECK indicator (Used for check battery)

Connectors

• INPUT jack: 1/4-inch phone type
  
• OUTPUT jack: 1/4-inch phone type
  
• CTL/EXP jack: 1/4-inch TRS phone type
  
• DC IN jack

Power supply

• AC adaptor Alkaline battery (6LR61 or 6LF22, commercially available) x 1
• Current draw 120 mA
• Expected battery life under continuous use Alkaline battery (6LR61): Approximately 3 hours * This can vary depending on the specifications of the batteries, capacity of the batteries, and the conditions of use.
• Dimensions 73 (W) x 129 (D) x 59 (H) mm, 2-7/8 (W) x 5-1/8 (D) x 2-3/8 (H) inches
• Weight (including battery) 410 g, 15 oz