The Lower Rhythm has released Abyss, another free VST effect plug-in for Windows.

Abyss is a simple synthesizer effect intended to be inserted on your bass drum channel. While allowing the original signal to come through untouched, it adds a secondary layer of tunable, low end bass synth. This is an easy way to add controlled low end to your bass drum without obliterating it with an equalizer. Includes lowpass filter, envelope and waveform selector for shaping (5 waveforms).