Drumatrix 

The Drumaxx percussion modeling instrument gives you total control over 16 physically modeled drum pads that can be routed to independent outputs for external effects processing.

Great, but why should you care when the internet is awash with drum samples? In two words, expressive control. Once a drum sound is recorded, the performance and modulation options are limited to filtering, volume, or similar 1-dimensional effects. When a single drum sample is triggered in a roll, you get the familiar 'machine-gun' effect and it just sounds mechanical. Multi-sampled, multi-layered drums can overcome this limitation but need multi-megabyte or even Gigabyte! drum libraries. Even then, you are still limited to the sounds originally recorded.

Drumaxx is not based on samples or even commonly used 'synthesis'

techniques, where oscillators are mixed and the result is always 'electronic'. Drumaxx uses modeling algorithms to create bass drums, hi-hats, snares, realistic and electronic sounds too. But what about the traditional 'Achilles' heel' of synthesis, cymbals? Drumaxx creates cymbals and metallic percussion also.