Guitar echo delay pedal effect Belle Epoch Deluxe designed according to Echoplex EP-3 with the JFET preamp , the high gain silicon transistor based record and playback amplifiers and the feedback loop for an authentic audio feel. It delivers classic tape delay sound reproduction and has the potentiometers to control echo heads, depth, record level, echo volume, echo sustain, echo delay, and the VD and Exp mode switch.