This consists of eight square-wave oscillators tuned by four knobs and triggered by two overlapping four step sequencers.
In addition to a speed control there are four frequency knobs which each control a pair of oscillators. There is a power switch and a switch to turn on or off the second sequencer. There is also a volume control and low-pass filter. Audio output is a standard 1/4″ jack. Powered by an included wall adapter.
The enclosure is an old wooden box that flips open making it easy to take peeks at the guts.