Compression/sustain effect pedal for guitar that compress loud and boost low signals without degrading the original sound. Effect provides dedicated Level, Tone, Attack and Sustain controls, blue status LED for effect on/off and battery check and top-quality on/off switch that maintains incredible signal integrity in bypass mode. Powered by a 9 V battery or adapter (not included). Dimensions: 70 x 54 x 123 mm. Weight: 330 g.