Category Archives: DIY

The 10-loop modular controller build report – chapter I

It started as an improved version of the EPIC Looper and due to serious time restictions it could not be brought to an end 4 years ago. Recently things changed and we revisited the project and found it still an unmatched and high-end DIY project for every experienced builder. It took two month to build […]

The 10-loop modular controller build report – chapter II

Since we have already built the audio switching part in the first chapter, we now do the microcontroller. In the beginning of the project there were several options on the display that can be used but due to the restricted time at hand the version with the OLED display most complete. They come in 1.3″ […]

Jon Pattons Cruz’ Driver

About the circuit Jon Patton is a great engineer in building guitar effects. He developed a good number of circuits that are well known in the DIY community. What Jon sais about this circuit: This was a fun challenge, and it came together pretty quickly once we identified what would work well with his amp […]

Relay Switches – The story

The TH custom line of quiet switching Seriously: Everyone owns a pedal that sounds great but makes problems when switching it on and off. The reasons for this can be found in the “To popp or not to popp” knowledgbase-article. The other issue is the mechanical endurance of the switch itself. How long will it […]

Merlins Jenny Greenteeth

About this circuit Merlin Blencowe, also known as the Valvewizard (, introduces his new circuit on his projects page as follows: Jenny GreenTeeth started off as an experiment in making a chorus effect using the PT2399. Chorus is created by passing the signal through a very short delay line, somewhere between about 8ms and 25ms. […]

OD 67 Overdrive – DIY

This is based on a DOD 250™/ MXR Dist+  overdrive which is a straight-to-the point distortion unit. In addition to that Brian Wampler has written a nice article in premierguitars which discussed a lot of modifications to optimize the circuit Those mods are switchable on the OD67 board. The most usefull one (which the […]