Analog generator waveform is far from being perfect – it’s unstable and suffers from inevitable voltage-brought deformation. Many of the analog filters are unsteady – you might hear some noises, phase shift or self-oscillation. But these very drawbacks make the signal so brisk, lively – well, actually, alive indeed. Digital developments helped to tame analog sound, cut it into samples, increase polyphony, give you a synthesizer equipped with the functions which were simply unobtainable in analog instruments. In 1990s instrument manufacturing companies got highly interested in analog modeling technologies development – they were eager to re-create those smallest details of electric musical instrument circuit behavior.