Boss SY-1 Synthesizer guitar effects pedal in blue, designed for expressive synth sounds with guitar or bass. This model is from 2019 to present.

• Metal chassis with blue finish and black rubber footswitch labeled with Boss logo.
• Four control knobs for Effect/Direct, Tone/Rate, Variation, and Type with labeled settings.
• Inputs and outputs include OUTPUT, INPUT, EXP/CTL, SEND, and RETURN jacks.
• Includes original black box with blue Boss branding as shown in photos.
• Box contains original manuals and paperwork as shown in photos.
• Compatible with standard guitar and bass setups, no special pickups required.

Condition is good with visible minor surface wear and scratches on the pedal and footswitch. See photos for details.