Digitech DOD Compressor 280, Analog Compressor, Based on legendary DOD Compressor 280 circuit design with updated components, Evens out dynamics and peaks, Improves sustain of notes, Independent compression and output controls, True Bypass, Bright, blue status LED, Light aluminum housing, Power: 9V battery or optional 9V DC power supply, 2.1 mm barrel plug, (-) center, Dimensions (LxWxH): 117 x 63 x 75 mm, Weight: 281 g