This used MXR Custom Comp compressor pedal is in good condition and delivers classic, vintage-style compression ideal for smoothing out your tone or adding sustain and punch to your playing. Featuring a high-grade CA3080 "metal can" integrated circuit for low noise and superior transparency, it offers simple controls for Output and Sensitivity, making it easy to dial in your preferred sound. The pedal runs on a 9V battery or standard 9V power supply (not included) and has a durable metal chassis that's road-ready. With true bypass switching, it preserves your guitar's tone when not engaged. Whether you're tightening up rhythm parts or beefing up leads, this MXR Custom Comp adds versatile compression you can count on.