Casio CZ/ VZ/ FZ - Pro Series

all competently designed digital synths, assuming they don't use oversampling and digital filtering - have analogue reconstruction lpfs to get rid of high-frequency imaging (aliasing is a misnomer here and in most other cases). these filters are non-resonant and thoroughly uninteresting for anything except protecting tweeters and precluding intermodulation distortion. i cannot stress enough how mundane a reconstruction filter is - and how a little research in digital audio would reveal it as one of the simplest concepts therein.