Electro-harmonix Electronic Crash Drum/Crash Pad work-a-like instrument. Crash, hats, snare, kicks, thwip, thunk, pshhht, whoop, etc.
Original era inspired BBD-ish reverb/echo effect included for extra whatever.
EHX just reissued this and I wondered if the idea was as versatile as they claimed. Just some noise run though a resonant filter with a pretty good, simple control scheme. Turns out you can do a lot with it.
Might want to change the filter model, I just picked the band pass that seemed to have more Q-tronic vibes.
(no scientists involved, not an accurate emulation, probably not the best thing you ever internet-ed).