The 280 is an optical compressor that can go from light sustain to utterly smashed with the turn of a knob. Unlike faster non-optical circuits the 280 retains your high frequencies until you get into the more extreme settings. The 280 is ideal for chicken-pickin’, added sustain for leads, or snappy-slappy funk rhythm. The 280 also has enough output to be used as a lead boost with added compressor sustain. And like all of the updated DOD pedal, it has a modern power jack, LED, light but strong aluminum chassis, and true bypass switching. SPECIFICATIONS General Specifications Input 1 x ¼” instrument Output 1 x ¼” Chassis Material All Metal Power Supply 9V Alkaline Dry Battery PS0913DC power supply Dimensions Height 2.25” (5.71 cm) Width 2.63” (6.68 cm) Length 4.68” (11.88 cm) Weight 0.62 lbs. (0.281 kg.)