Ep101 echoplex ® preamp dunlop manufacturing, inc. P.O. Box 846 benicia, ca 94510 u.S.A. Tel: 1-707-745-2722 fax: 1-707-745-2658 controls gain knob controls amount of gain added to signal footswitch toggles effect on/ bypass (blue led indicates on) power the echoplex ® preamp is powered by one 9-vol...