Two banks of three unpredictably inter-modulating oscillators.
The controls for each bank are:
Frequency 1
Frequency 2/Rhythm speed
Frequency 3
Tone
Volume
The middle knob is a bend control or pitch at some settings. It can be used to starve the circuit of electricity and make tortured modem like noises. The banks can be used independently with two jacks or linked together using just the right jack (note volumes are not independent when linked).
PLEASE NOTE: This device requires a centre negative power supply, 9volts, 200mA (like for example the BOSS PSA-240).