This Maestro Echoplex EP-4 is the delay that set the standard, here in Very Good condition, with the original manual. When it was first built in the '60s, everyone used an Echoplex, and if they didn't, they wanted one. Now you have the chance to grab one at a fraction of the price. Looking for an authentic way to recreate some effects from the likes of David Gilmour, Chet Atkins, and Jimmy Page? The EP-4 can do it. Housed in its original sturdy box, it has independent Microphone and Instrument inputs, as well as two separate inputs for the included footswitch (not pictured) via the Echo On/Off and Playback inputs. The slider is the Echo Delay Control, used to adjust length of the echo, while both the Echo Repeats and Echo Volume controls work independently to produce the intensity of the echo. The tone itself can be altered with the Treble and Bass knobs, giving you further control of your tone. The Maestro Echoplex EP-4 really is one of the coolest effects processors ever made.