![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. : 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. :](https://preview.redd.it/w94ihdnjra851.jpg?auto=webp&s=bb6e2af6fa0528cc341b6b3906d6b8699fd2166c)
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. :
![Guitar Pedal X - GPX Blog - Drunk Beaver's Trainer TS-15 Preamp Perfectly Captures that Small Amp Dynamics and Punchy Character Guitar Pedal X - GPX Blog - Drunk Beaver's Trainer TS-15 Preamp Perfectly Captures that Small Amp Dynamics and Punchy Character](https://d6a2e7ghqts3o.cloudfront.net/AcuCustom/Sitename/DAM/527/2021GPXDrunkBeaverTrainer700V2.jpg)
Guitar Pedal X - GPX Blog - Drunk Beaver's Trainer TS-15 Preamp Perfectly Captures that Small Amp Dynamics and Punchy Character
![Guitar Pedal X - GPX Blog - Sinvertek Perfects the Full-Range Amp-Like Preamp Pedal with its new 14 Controls and 19 Superior Levels of Gain - N5 MGAT-1 Hyper Preamp MIAB Guitar Pedal X - GPX Blog - Sinvertek Perfects the Full-Range Amp-Like Preamp Pedal with its new 14 Controls and 19 Superior Levels of Gain - N5 MGAT-1 Hyper Preamp MIAB](https://d6a2e7ghqts3o.cloudfront.net/AcuCustom/Sitename/DAM/533/2022-GPX-Sinvertek-N5-MGAT-1-V2-700.jpg)