The Frankenbox

"The Frankenbox is essentially an all-in-one synthesizer built for making distorted screeches, growls, and other awful noises. It includes two oscillators, a built in microphone, two audio inputs, a voltage controlled amplifier with ringmod capabilities, a voltage controlled lowpass filter, an LFO, and a sequencer. One oscillator includes a photocell and the other can be modulated by the LFO and the sequencer. There is a joystick that allows for frequency modulation of the oscillators. Each component was specifically designed with the intention of creating loud, rumbling sounds with crackling distortion over the top. The entire box, down the knobs, case, and LED color, was created exactly as requested. With 41 knobs and hundreds of ways to make the device interact with itself, an almost infinite number of sounds is possible."

Title link takes you to more devices including samples of The Frankenbox and others. Via Colin of Experimentalists Anonymous Custom Electronic Devices.