In a previous post about the Test Bench Rack I received helpful comments from John Loffink, who had also refurbished the same Pittsburgh Modular power supply board. He educated me … Read More

I had a pair of rack end pieces left over from a previous rack project. And I also had a power supply left over from that same project. All I … Read More

I use a lot of Sample and Hold modules. They are an essential component of a Quantussy Cell. It is hard to find simple sample and holds, those without a … Read More

I noticed a problem with the DIY Quantussy right after I finished it. Chaos wouldn’t go all the way to zero. There was always a bit of cross modulation in … Read More

A few posts back I described an experimental VCA, based on the AVDog circuit by Peter Blasser in the Plumbutter. Our friend crucFx (Josh Rodriquez) offered to make a PC … Read More

I came across a used Pittsburgh Modular Cell 90 Eurorack case with a Tiptop Audio uZeus power supply included, for a very good price. I couldn’t resist. I already have … Read More

This box contains one HBB15-1.5A power supply. I recapped the supply (replaced all the electrolytic capacitors), as I had done for the MOTM cabinets. The caps on the MOTM-900 were … Read More

Another Ciat-Lonbarde PC board from crucFX, a.k.a. Josh Rodriquez, with circuit design by Peter Blasser. Dubernator is a dual bandpass filter, highly resonant. It features two identical, independent filters, each … Read More

I’ve built a Tetrazzi quad oscillator, a Quantussy quintuple modulator, a Roolz 5-6 dual LFO, and am about to built a Dubernator dual VCF. All of these from PC boards … Read More

SSSR Labs SM630 AWS (Alisa Wave Shaper) SSSR Labs AWS is the first collaborative design by Dmitry Shtatnov and Vyacheslav Grigoriev. The module is inspired by the «Harmonics» waveshaper section … Read More