Sensational synth sound. Made simple. The Boss SY-1 Guitar/Bass Synthesizer Pedal gives you a gigantic range of different synth voices to use - 121 to be precise. But you dont need to be an expert programmer to get the best out of this pedal. Because unlike other synth pedals its as straightforward to use as a standard stompbox. That means finding your perfect synth voice is made completely easy.And aside from the the SY-1s hassle-free usability youre also spoiled for choice over the sounds you can create. With an extensive library of voices no synth tone will be off limits. All of those voices are polyphonic too. That means they work equally as well with chords as they do with individual notes. You can even use it with other pedals thanks to a parallel send and return loop. One pedal everything you need.