MXR EP101 Echoplex Preamp
For your consideration, Garrett Park Guitars presents this MXR EP101 Echoplex Preamp.
From the Dunlop Website:
The Echoplex Preamp recreates the EP-3's legendary preamp mojo, following the same signal path with FET circuitry and a Gain control for up to +11dB boost.
This pedal can be powered by a 9-volt battery, a Dunlop ECB003 9-volt adapter, or the DC Brick™, Iso-Brick™, and Mini Iso-Brick™ power supplies (not included).
Dunlop's EP101 Echoplex Preamp recreates the magic of the EP-3's front end, featuring a Field-effect Transistor (FET) just like the original and following the exact same signal path. The Gain control allows you to boost your signal by up to +11dB, with light asymmetrical clipping at higher settings for a bit of nice organic grit.
The Echoplex Preamp runs on standard 9-volt power and contains power management circuitry to guarantee constant headroom performance throughout the normal life of a 9-volt battery. With a heavy-duty Phase 90-sized housing, a replica EP-3 knob, true bypass switching and a status LED, the Echoplex Preamp is built to take a beating on the road so you can leave your fragile vintage piece at home.