Boss SY-1

A true BOSS polyphonic guitar synth in a compact pedal
No special pickup required: Play rich, dynamic synth tones with any guitar or bass
121 total sounds (11 types and 11 variations), all ready to play without programming knowledge
Includes a wide selection of analog synth sounds: leads, basses, layered organs, pads, and arpeggiated sequences
Zero latency for unrestricted musical expression
Quickly customize sounds with Tone/Rate and Depth controls
Hold function for playing normal guitar over synth voices
Blend synth and guitar sounds with independent level controls
Parallel send/return loop for easy integration with other pedals
Mode switch optimizes the synth engine for guitar or bass
Supports extended control via a footswitch or external expression pedal