In fact you can get the original samples taken directly from the ROMs of old digital drum machines, which is maybe 60% of the character. The other 40% is a comb

In fact you can get the original samples taken directly from the ROMs of old digital drum machines, which is maybe 60% of the character. The other 40% is a combination of the imperfect digital-to-analog converters and analog output stages of the time, the way effects like pitch shift were implemented (often by changing the sample rate, which is hard to emulate), and the control gestures idiomatic to the machine.