Earthquaker Ghost Echo V3 - UsedThis Earthquaker Ghost Echo V3 is in excellent condition with little to no signs of wear. EarthQuaker Devices designed the Ghost Echo with the player in mind. It's a very powerful Reverb pedal that's easy to use and dial in. It is primarily based on Spring reverb's from the early days, but also crosses into the Hall reverb territory. The Attack knob dials in the length of the pre delay, the Dwell adjusts the length of the decay, and the Depth knob