MXR M-102 DYNA COMP

 The Dyna Comp is a compressor that lets you set a maximum output level
and the sensitivity at which it kicks in.
 This device

can produce that percussive, clicky sound on a clean guitar that you've heard on so many pop hits.
 It can also even out the volume of sustained tones for mellow lead work,

Power: Single 9 volt battery or Dunlop ECB-003 AC adapter

Controls: Footswitch toggles effect on/bypass (red LED indicates on) Output knob sets
compressed (attenuated) output level Sensitivity knob sets
compression ratio (highest sensitivity is maximum compression)

4-3/8" x 2-3/8" x 1-1/4" 0.9lbs. Red