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.
WHO’S IT FOR?
Gigging guitarists and bassists who need quick access to different tunings without the hassle of using several instruments. Ideal for players looking to instantly re-pitch their guitars, craft heavy drop-tuned riffs, and explore new creative possibilities.
KEY BENEFITS
1 PITCH PERFECTION 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
RETUNE YOUR GUITAR/BASS
- 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
Simplicity and Ease of Use
- 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

DADDARIO ACCESSORIES ACOUSTIC GUITAR HUMIDIFIER
STAGG PSB-48T HARDWARE BAG WITH WHEELS
ERNIE BALL EARTHWOOD PHOSPHOR BRONZE ACOUSTIC 12-54
GIBRALTAR GHBL HARDWARE BAG LARGE
HOHNER MARINE BAND 1896 F-MAJOR
PROTECTION RACKET 1820 BASS DRUM CASE
REMO 11BANJO HEAD CLEAR
YAMAHA CHH 930
VIC FIRTH CMN CLASSIC METAL NYLON TIP
K&M 21312 CARRY BAG
VIC FIRTH AJ2 AMERICAN JAZZ
YAMAHA CWH 940
K&M 26740 MONITOR STAND
THOMASTIK-INFELD 4/4 VIOLIN STRINGS 135B DOMINANT NYLON CORE MEDIUM
GEWA 523130 RECTANGULAR ELECTRIC GUITAR CASE ECONOMY
VIC FIRTH 3AN AMERICAN CLASSIC NYLON TIP
STAGG SPS-A1000BK SATELLITE ROD
EVANS 10 J1 ETCHED
PROTECTION RACKET 3012CS SNARE CASE
DADDARIO ACCESSORIES 25LK02 KISS STRAP
YAMAHA YTR 3335 Bb TRUMPET REVERSE TUNING SLIDE GOLD LACQUER
HOHNER SILVER STAR BB-MAJOR
EVANS 13 GENERA G1 COATED TOM HEAD
STAGG MAPLE LOTUS−FLUTE WITH BAG
DADDARIO PRELUDE J810 1/4M VIOLIN SET MEDIUM
ERNIE BALL 2215 SKINNY TOP/HEAVY BOTTOM 10-52
STAGG NMC10XPR XLR/PLUG CABLE 10M
HARDCASE 20"BASSDRUM CASE
FENDER MTG TUBE TREMOLO 