Is running a Roland Boutique, JP-08 for instance, through an Analog Heat technically the same as a digital synth with analog filters? Take the DW-6000 for example. I’m under two years in electronic music and synths, trying to learn something here.
Second question. What is the difference between a fully digital synth and a VST? Are they essentially the same? What differentiates them?
1st question: Depends. Maybe. You may miss out on keytracking by running a digital synth through an analog filter.
2nd question: not much difference, except for the fact that stand alone digital synths will have their own AD/DA convertors whereas VSTs will output through whatever audio interface you own. The VST creates sounds through code or sample playback, a stand alone digital synth can generate waveforms through sample playback or through code. You may have other factors effecting the output whether they be effects or output staging, etc.