Guitar Efx

Guitar efx vero layouts, modifications, and builds by POTAR

Power sag for guitar EFX

by
POWERSTARVE

Update 07/07/2024 I started making the dying battery effect in 2011 (by request for Christian Hand). Since then I have updated the design a couple times but the last version is was a complete overhaul of the circuit. Since then a lot of different companies have started offering some version of this effect. I have … Read more

Modified DOD FX70 Stereo Flanger

by
DOD stereo flanger mods

I have had this old DOD Flanger kicking around in my parts box for about 10 years. I finally got around to testing the mods on it, and WOW! It’s a killer. From added LFO tones and noise to delay-like repeats The mods are pretty simple, you replace the 3 internal trim pots with comparable-value … Read more

Sub Mini Tube Booster with the JAN 6418

by

Here is a stripboard layout I did for a preamp/boost using the JAN 6418 subminiature tubes I have been experimenting with lately. It is based on the schematic from the previous post, but rather than powering the heater with a 1.25-volt battery, I utilized an LM317 voltage regulator and a 100-ohm resistor. This ultra-simple circuit … Read more

Low Power Vacuum Tube PreAmp

by

I have wanted to learn more about vacuum tubes for years but was always put off by the extremely deadly power requirements. Working with low power sources for so long, I have blown my fair share of capacitors, which is scary enough for me. Recently I discovered the world of sub-miniature vacuum tubes and the … Read more

Germanium Fuzz using MP16b PNP transistors

by

The perfect layout for using the MP16b transistors that I have been importing from Russia. This layout is based on the Sabro Fuzz Face layout. I moved the bias from inside to the top so you can go from scuzzy velcro to full-on fuzz. I also dropped a line from the vero that was unused. … Read more

POTAR Design Concern