Blast from the past: Maestro Echoplex | MusicRadar
Vintage Maestro 1970s Echoplex Effect Pedal | Guitar Center
The Best Maestro Echoplex Style Pedals: Great Analogue Tape Delay Tones
1968 Maestro Echoplex EP2 Valve Tape Echo
Echoplex Preamp - YouTube
Maestro Echoplex EP-2 Echo Chamber - Evolution Music
Schematic I drew up for my dual Maestro EP-2 preamp pedal. Basically two tube echoplex preamps in series with a switch to switch between running just one pre or both in series. :
Echoplex - Wikipedia
Dunlop EP103 Echoplex Delay - YouTube
Used - Maestro Echoplex EP-3 Solid State - Eddie's Guitars