BOSS XS-1 Poly Shifter

Pitch
The BOSS XS-1 Poly Shifter changes the pitch of a guitar or bass in real time.
It offers semitone shifts and a range of up to three octaves, with a Balance knob for mixing the direct and shifted sounds.
Use it for alternate tunings, octave effects, or detuned doubling.
- Dimensions
- 73 × 129 × 59 mm
- DC voltage
- 9 V DC
- Current draw
- 120 mA
The official power options are a 9V battery or a BOSS PSA-series adapter. Polarity is not listed because it was not confirmed in the model-specific documentation.