Boost-o-Matic IV

This is treble booster from the Stompboxology. This was an interesting new letter published by Nicolas Boscorelli. Who has, it seems, disappeared. If anyone has any information about this guy please email me! I looking for issues of Stompboxology. I have a few I can trade. There are some posted at

He also published The Stombox Cookbook. Which is very cool. It contains a lot of original and interesting Stompbox designs.

It has an interesting and original design based around a pair of FET’s.

Boost-o-Matic IV

Here’s the schematic that I redrew from the Stomboxology article.

Boost-o-Matic IV Schem

Here’s a layout that I drew.

Boos-o-Matic IV Layout

Green Ringer with Mods

This is a Green Ringer with both the filter mod and nulling mod. I found these mods at General Guitar Gadgets.

The filter mod filters the input signal to bring out a stronger octave. The nulling mod helps tune in the octave generated by balancing the signal on each half of the wave form.

The filter mod is switchable. With the switch on the octave is very pronounced. With an almost cartoonish character.

Green Ringer with Mods

Here’s a drawing of the scehmatic that combines JC Maillet‘s nulling mod and Ben Milner‘s filter mod.

Green Ringer with Mods Schem/Layout