BOSS SY-1 Synthesiser Guitar Effects Pedal

Product ID: 210261
Currently out of stock
Currently out of stock
  • Classic BOSS stompbox construction
  • 121 sounds packed into a a small powerful unit
  • Blend both guitar and synth sounds
  • Output Guitar and synth effect independently
  • Mode switch for guitar and bass
  • Hold function to play guitar over the last played synth sound
  • Add expression pedal to control Tone, Depth and Rate of effect in real time
  • Latency free, real time control and sound
  • Sweeping pads, arpeggiated sounds, synth leads, pads and basses
  • Built in polyphony turns guitar chords into huge synthesised sounds


BOSS has been the goto pedal maker for guitarists for decades. With a reputation for solid construction and a wide range of control, BOSS has consistently produced pedals that stand the test of time. The SY-1 is another breakthrough in their regular stompbox size pedal range. Taking the best elements of the SY-300 they have put a host of synthesised sounds in a latency-free pedal.

121 sounds and a guitars still one

The SY-1 is packed with 121 individual sounds. 11 Synthesised, latency-free sounds each with 11 variations. There are a variety of analogue style leads, pads, basses and layered organs. There are also arpeggiated variations of some of the synthesised sounds

Real time control and polyphony

With the SY-1 you can create dramatic sweeping pads, the SY-1 supports polyphony meaning your guitars chords will be turned into huge synthesised tones. You can control the SY-1 in real time altering the type of synthesised sound and the tone, rate and depth of each effect and the mix of the effect.

Either Or together

Not only does the SY-1 let you blend the level of the synth effect, but you can also send the signal to two different locations meaning you can retain the signal chain for the guitar sound and send the synth sound to another output creating huge symphonic sounds.

Pure Extension

There is the facility to switch modes on the SY-1 between Guitar and Bass. The SY-1 has a jack input for an expression pedal to control either the tone, level or depth. There is also a hold function so you can play regular guitar over the last synth sound you played.

BOSS Ingenuity

BOSS consistently set the benchmark for pedal construction and effect quality. The SY-1 takes the best elements of the SY-300 and puts it into a classic stompbox. BOSS pedals have been a constant and as such has maintained similar prices over time. You know when you buy a BOSS Pedal it will stand the test of time.

Model NameSY-1
Synth soundsLead
Layered organs
Arpeggiated sequences
Controls Pedal switch
TYPE knob
TONE knob
DEPTH knob
Connectors INPUT jack: 1/4-inch phone type
OUTPUT jack: 1/4-inch phone type
SEND jack: 1/4-inch phone type
RETURN jack: 1/4-inch phone type
EXP/CTL jack: Stereo 1/4-inch phone type
DC IN jack
Dimensions 73 (W) x 129 (D) x 59 (H) mm
Weight (including battery) 450 g
Posted on 23/07/2019 by tom quayle always does a great job!

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