MXR Dyna Comp Effects Pedal
One of the most popular compressors of all time, the Dyna Comp is the secret weapon on many stars' pedalboards. This box will produce that percussive, clicky sound on a clean guitar that you've heard on so many pop hits. It also adds smooth sustain to lead lines.  Power: Dunlop ECB003 AC Adapter or Single 9 volt battery