I've paid money for software which emulates a 12 bit ADAC, with a knob to adjust the jitter etc. I have several such items in fact: https://www.plogue.com/prod

I've paid money for software which emulates a 12 bit ADAC, with a knob to adjust the jitter etc. I have several such items in fact: https://www.plogue.com/products/chipcrusher https://www.plogue.com/products/chipcrusher https://tal-software.com/products/tal-sampler https://tal-software.com/products/tal-sampler That chipcrusher thing in particular does some crazy stuff.