Used BOSS SY1 Effect Pedal

Transform your tone with this used BOSS SY-1 Synthesizer Effect Pedal in great condition. Compact and versatile, it offers 121 total sounds—including leads, pads, and bass—using real-time polyphonic tracking with zero latency. Designed to work with guitar or bass, the SY-1 features intuitive controls, an effects loop, and expression pedal support for dynamic sound shaping. Perfect for players seeking synth tones without complex setups. All housed in BOSS’s rugged, road-ready stompbox design.