Waldorf Attack 

The Attack is a VST percussion synthesizer with a powerful virtual-analog synth engine. It seamlessly integrates the sound of the 80's analog classics and the ambitious electronic club drums of the 90's into the virtual instrument hosts of the 21st century. The Attack generates all its sounds in real time, giving you the freedom to alter all parameters directly.

http://www.soundonsound.com/sos/feb02/articles/waldorfattack.asp

http://www.waldorf-music.info/archive/attack.html