From Dunlop:

The Echoplex Delay delivers the legendary tones of the EP-3 tape echo unit with a hi-fi all-analog dry path and a simple control interface, including an Age control to "age" your repeats. No tape cartridges required!

This pedal can be powered by the included Dunlop ECB003 9-volt adapter, or the DC Brick™, Iso-Brick™, and Mini Iso-Brick™ power supplies.