Don't let it deceive you, the Korg Monotron is a real analogue ribbon synthesizer capable of generating thousands of diverse sounds. It is compact, battery powered, and portable. You can play the synthesizer in two modes: pitch and cutoff. The five knobs are used to control the sound parameters, which are a VCO (voltage-controlled oscillator), a LFO (low-frequency oscillator), and a VCF (voltage-controlled filter). The VCO generates a sine wave at a specific pitch (which changes based on the rate of the sine wave). The LFO is used to create a pulse or sweeping effect. And the VCF is used to set the cutoff and peak frequency of the sound which helps shape the output. These parameters are found in almost all analogue synthesizers but never before in such a small electronic instrument. The unit also features an 1/8th inch auxiliary input (for tweaking external sounds) and an 1/8th output for recording.