EchoPlex
Echoplex EP-3 Pre Amp / Aion Ares
Aions Ares project which is based on Echoplex EP-3 Pre Amp which includes an onboard voltage doubler for more headroom. Schematic and info on J FET selection avaiable HERE. ‘Note that there is two ground connections on the board, the purpose is to reduce any potential noise from the charge pump. Those wires can be … Read more
ECHOPLEX: EP-3 Preamp, Point to Point Layout
This is one of the first circuits I ever built due to the simplicity, and it’s hard to go past as a simple boost with a bit of fattening up of the signal. The Echoplex EP-3 preamp doesn’t provide tons of gain, but it does work very nicely as a slight boost, or as an … Read more
EchoPlex Preamp
The EchoPlex Preamp emulates the input stage on the old EchoPlex EP-3. It provides up to 11dB of gain and is mostly used as an always on pedal to sweeten the user’s tone. If you want to add the volume control, use a 500k pot and connect lug 1 at the junction of the 100n … Read more