1970's Maestro Echoplex EP-3 Tape Delay Effect Unit w/Calzone Case - UsedThe Meastro Echoplex EP 3 debuted in 1970 and was the first model from the manufacturer to feature a solid state transistor as the originals were tube powered and included two tape heads. This early EP 3 model is one of the cleanest examples of the delay unit that has come across our shop. It looks to be a mid 1970's model and should be noted that it features a particle board housing and no front badge making it a transitional model from the era. The