Super Comp Compressor Info:Countless pros rely on the original Dyna Comp in the studio and on stage. Now, the updated Super Comp takes that classic one step further. Output and Sensitivity knobs let you dial in the perfect setting to keep your parts where they belong in the mix. The new Attack Level control lets you keep your initial bite and chunk as you pour on the sustain. If you want tight, snappy clean tones and soaring lead tones, the Super Comp is the pedal for you.Power: Dunlop ECB003 AC Adapter or Single 9 volt battery