CGS drum simulator from Ken Stone
The CGS747 is one of a family of 3 CGS drum simulators from Ken Stone. It generates a single drum sound that can be adjusted to sound like a cymbal, hi-hat, snare drum, electronic drum, or numerous other percussive sounds. It is a complete dedicated synthesizer in its own right, including six oscillators, a noise source, a mixer, an envelope generator, a VCF and a VCA.
http://www.elby-designs.com/contents/en-us/p731_CGS747_-_Cynare_Drum_Simulator.html
No info about availability.
$342