This is Mic Testers Big Muff Plus. It’s a Big Muff with a JFET input and output stage, and a James control in place of the BMP tone control. The JFET input creates a higher input impedance the on the original Big Muff which prevents treble loss. Schematic Q1 is a high impedance input before […]
Here’s a Vulcan V1.2 circuit it adds reverse polarity protection, and ground pads for input and output jacks. These are available on OSH Park. Order some boards and follow the build guide to build your own Vulcan. Vulcan On OSH Park Vulcan Build Docs
Vulcan v1.1 PCBs
Vulcan PCB. This is a great sounding overdrive by Joe Davisson.
Shocktave first impression
This worked right after I found a small solder bridge grounding the input cap. The PCB layout I posted has some very small traces that are very close to the ground plane. I thought this was going to be a nightmare to solder. It was actually not too hard. I found careful application of small […]
I have been thinking about making Joe Davidson’s Shocktave for many years now. I have yet to build it, the PCB in this post is unverified so far. I’m finally getting around to it. I had built a BSIAB II while back that had all of the transistors in a row. This made for a […]