via this auction "3 Frac Rac sized 9 volt homemade analog or analogue synthesizer modules. These were made to fit into and be powered from a Blacet type setup (http://www.blacet.com/) and use 1/8" jacks and Molex connectors. .From left to right in the photo: 1). dual oscillator module constructed from two opamp function generator kits featuring separate waveform outputs, manual frequency control knob, and control voltage input. This does NOT track at any known standard, i.e. 1v/octave. You can't play tunes with this unless you are very creative. 1 space width. 2). Filter module, based on Craig Anderton's wah filter from the "Electronic Projects for Musicians" book. Homemade circuit board with lots of knobs. Rather gritty. 2 space width. 3). Dual LFO module with rate control: these are Blacet LFO PCBs that he used to sell for his CZ-101 Instamod. 1 space width.
Using a proper power supply, such as two 9 volt batteries wired properly, and a few 1/8" cables..."
