1. Introduction
The BOSS XS-1 Poly Shifter is a compact pedal designed for instant pitch retuning of guitars, basses, and other instruments. Utilizing advanced BOSS algorithms, this pedal maintains the instrument's true character while offering speedy tracking and clear response. It supports pitch shifting across +/- seven semitones or +/- three octaves, and includes a detune function for doubling effects. The XS-1 provides versatile performance options for fluid and seamless tuning changes.
2. Features
- Class-leading pitch shifting quality realized with new BOSS algorithms.
- Instantly changes the pitch of a guitar, bass, or other instrument.
- Clear response and natural feel that retains the fundamental sound character.
- Changes pitch across +/- seven semitones or +/- three octaves.
- Balance knob adjusts the mix between the effect and direct sound.
- Detune function (+/- 20 cents) to create rich doubling effects.
- Selectable pedal switch modes for toggle or momentary operation.
- Connect external footswitches for quick access to up to three tuning setups, or use an expression pedal for linear pitch control.
3. Setup
Before connecting the BOSS XS-1 Poly Shifter, ensure your instrument and amplifier are powered off. Use high-quality instrument cables for optimal signal integrity. The pedal requires a 9V DC power supply (not included) or an alkaline 9V battery.
Figure 1: Front view of the BOSS XS-1 Poly Shifter pedal, showing the footswitch and control knobs.
Connect your instrument to the INPUT jack and your amplifier or next pedal in the signal chain to the OUTPUT jack. For external control, use the CTL/EXP jack.
Figure 2: The BOSS XS-1 Poly Shifter connected in a guitar signal chain, ready for use.
4. Operating Instructions
4.1 Controls Overview
Figure 3: Detailed diagram illustrating the function of each knob and switch on the BOSS XS-1 Poly Shifter.
- BALANCE Knob: Adjusts the mix between the effect sound and the direct sound of your instrument.
- SHIFT Knob: Selects the amount of pitch shift, ranging from +/- seven semitones to +/- three octaves.
- DETUNE Switch: Activates the detune function, adding a subtle doubling effect by shifting pitch by +/- 20 cents.
- TOGGLE/MOMENTARY Switch: Sets the footswitch behavior. In 'TOGGLE' mode, the effect turns on/off with each press. In 'MOMENTARY' mode, the effect is active only while the pedal is pressed.
- CHECK Indicator: Shows the pedal's on/off status and battery life.
4.2 Modes and Pitch Shifting
The XS-1 offers various pitch shifting modes, allowing for creative sound manipulation:
- Pitch Shift: Changes the overall pitch of your instrument up or down. Use the SHIFT knob to select the desired interval.
- Detune: Engages a subtle pitch shift of +/- 20 cents, creating a rich, chorus-like doubling effect. This can add fullness to your sound without drastic pitch changes.
- Harmony: (While not explicitly listed as a separate mode in feature bullets, the product description implies it as a function of the pitch shifter) This mode allows for adding harmonic intervals to your original signal, creating layered sounds.
Figure 4: Visual representation of various pitch shift settings, including half step down, C standard, and whole step up, achievable with the XS-1 Poly Shifter.
5. Connecting External Devices
The CTL/EXP jack allows for connection of external footswitches or an expression pedal, expanding the control possibilities of the XS-1.
- External Footswitches: Connect up to two external footswitches (e.g., BOSS FS-5U, FS-6, FS-7) for quick access to up to three different tuning setups.
- Expression Pedal: Connect an expression pedal (e.g., Roland EV-5) for linear control over pitch shifting, allowing for smooth, real-time pitch bends.
Figure 5: The BOSS XS-1 Poly Shifter shown connected to an external expression pedal, demonstrating enhanced control capabilities.
6. Specifications
| Specification | Detail |
|---|---|
| Model Number | XS-1 |
| Item Weight | 1.16 pounds |
| Product Dimensions | 2.88 x 5.16 x 2.36 inches |
| Color | Black/Blue |
| Material Type | Aluminum |
| Voltage | 9.0 V |
7. Safety Information
Always use the specified power supply (9V DC, center negative) or a fresh 9V alkaline battery. Do not attempt to disassemble or modify the unit. Avoid exposing the unit to extreme temperatures, humidity, or direct sunlight. Disconnect all cables before cleaning or when the unit will not be used for an extended period.
8. Maintenance
To clean the unit, use a soft, dry cloth. Do not use abrasive cleaners or solvents. Store the pedal in a dry, cool place away from direct sunlight. If using a battery, remove it if the pedal will not be used for a long time to prevent leakage.
9. Troubleshooting
- No Sound: Check all cable connections (input, output, power). Ensure the power supply is correctly connected and functioning, or replace the 9V battery. Verify instrument and amplifier volumes.
- Weak or Distorted Sound: Check battery level. Ensure cables are not damaged. Adjust the BALANCE knob to find the desired mix between direct and effect sound.
- Effect Not Engaging: Check the TOGGLE/MOMENTARY switch setting. In 'MOMENTARY' mode, the footswitch must be held down for the effect to be active.
10. Warranty and Support
For detailed warranty information and product support, please refer to the official BOSS website or contact your local BOSS distributor. Keep your purchase receipt as proof of purchase.
