The Pittsburgh Modular A Filter of Crows is a multi-mode overdrive filter module that combines three analog technologies to redefine analog synthesis. The module features an ultra-high-gain preamp circuit that can provide up to 75x variable gain overdrive without sounding harsh, a 12db state variable "no-dead-spot" PGH filter with manually selectable and stackable filter responses (lowpass, bandpass, and highpass), and a resonant stability circuit that enables the PGH filter to provide near-infinite resonance without slipping into self-oscillation unless the user wants it to. The result is a module that creates rich, complex, and musically satisfying sounds.
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