With the SY-1, it’s never been easier to infuse your creative arsenal with BOSS’s legendary guitar synth technology. This amazingly expressive tool is filled with 121 ultra-responsive sounds, all distilled down into a BOSS compact pedal that slides easily into any setup. Best of all, it’s as simple to use as a standard stompbox, so you don’t need any background in synth programming to bring a new world of sonic textures to your music.
 
-On/Off foot Pedal switch Rate knob
-Stacked Effect/direct Level knob
-Stacked Tone/rate and depth knob
-Variation knob
-Type knob -1/4" mono input and output jacks
-1/4" send and return effects loop jacks
-1/4" expression/control pedal jack
-DC 9V 115 mA power in jack
-Alkaline battery: Approx. 2 hours
-buffered bypass