The Foundation is a fully modular, eurorack, analog synthesizer.  A patchable system styled after the great monosynths of the past with no hardwired signal path or fixed voice architecture to restrict creativity.  Driven by two wide range analog oscillators the Foundation produces a huge, warm sound that can't be matched by digital or VST synths.  All of the elements of a classic voltage controlled synthesizer are available as an open, patchable, modern synth.  Check out the Foundation page for more information.

The LFO2 is a basic dual LFO module.  It uses two different types of low frequency oscillator circuits to provide a variety of modulation options.

The ADSR module is a very flexible envelope generator.  Two separate ranges allow for everything from tight hits to slow evolving soundscapes.

Take a look at the individual module pages for more information.

Filter

The Filter is a voltage controlled, analog, state variable filter designed by Pittsburgh native and electronics experimenter Michael Johnsen.  The state variable topology was chosen because it allowed us to produce a very smooth and natural sounding filter, in addition to offering several other modes of operation, each with a unique sound and energy all their own.

There Is No Sweet Spot 
This Filter defines the sound of Pittsburgh Modular.  It offers a warm, organic sweep through the full frequency range.  The lowpass filter is gummy and relaxed while the highpass is clean and defined. The goal was to produce a filter that did not have a sweet spot; where the every turn of the frequency knob produced something interesting.

View the Filter product page.

Fragments Generator

The "Fragments" are a set of pings, or short bursts of sound created by a trio of Twin-T filters.  The Twin-T filter circuit was used by some classic analog drum machines to create percussion sounds. Realistic tom-toms, congas, and kick drums can all be made using this method. The Twin-T filters included in the Fragments Generator have been adapted and optimized for a specific purpose.  The idea was to create an analogue method of generating sounds at the level of individual "grains" or "fragments" similar to a traditional digital Granular synthesizer. By approaching the process from another angle we have come up with an entirely new sub-genre of synthesis.

View the Fragments Generator product page.

More info and discussion can be found at Muffwiggler.