For guitarists wanting instant access to alternate tunings without changing instruments, the BOSS XS-1 Poly Shifter delivers exceptional pitch-shifting performance with natural feel and outstanding tonal integrity. Powered by advanced BOSS polyphonic processing technology, the XS-1 intelligently shifts the pitch of individual notes and complex chords with remarkable accuracy, preserving the character, dynamics and response of your instrument. Whether you're dropping into lower tunings, changing keys to suit a vocalist, creating octave effects or exploring new sonic textures, the BOSS XS-1 provides clear response and natural performance across a wide range of musical applications. Offering pitch shifting across ±7 semitones and up to ±3 octaves, along with a detune mode for rich doubling effects, the XS-1 makes it easy to access everything from subtle enhancements through to dramatic tuning changes. Selectable toggle and momentary operation, plus support for external footswitches and expression pedal control, provide added flexibility for live performance and creative playing situations. Perfect for guitarists looking to expand their tonal possibilities without compromising sound quality. Oxygen Music is proud to stock a range of BOSS effects pedals, including the XS-1 Poly Shifter.