Analog compressor. Low distortion for excellent tone quality. Increased sustain of instrument notes and chords. Compresses dynamic range - all signals at THRESHOLD are kept at same volume. Volume/Threshold/Compression-Blend Control. Excellent dynamic response. Simple, easy to use design. 100% Analog design with True Bypass circuitry. "Effects on" indicator light. Original XVIVE tone. Micro pedal package. Durable all-metal housing.