EKS Pro is a special-purpose software synthesizer designed to recreate the sound of analog electronic kickdrum sounds - hence the name EKS (Electronic Kickdrum Synthesizer).
The plug-in offers six modes, each with their own, characteristic sound. It goes far beyond the capabilities of vintage analog hardware, however, and introduces new parameters, most importantly it offers precise control of the pitch. Additionally, despite the fundamentally different models employed, all parameters apply equally to all modes.
The user interface is organized into four sections controlling the pitch, the amplitude and pitch envelopes, the attack stage and finally pitch modulation. This layout makes it simple and straightforward to program your own patches or modify existing ones.
The included PDF manual provides detailed information about every parameter.