Tested !
opened in all my daws without problems !
performance ?: 25/26 % max when playing like a fool on it. beetween 15 and 20% when playing full Chord.
sounds really good. but:
easy to saturate with high velocity (it maybe wanted, it's part of the sound style ?). Sound is a little bit "brighter" than other mark II or stage 73 vst i have.
Maybe put an LPF filter (of course Marl II hasn't) and calling it "Brightness" to control and have some darker/buttery soft sound ?
And maybe just lowering each partials master volume.
But as a freeware it's absolutly playable and nice sound ! (just waveforms, no sample. Absolute fabulous !)
Ah ... if you want to do freeware vs commercial. This as a freeware is good. Just add keyboard and preset system (without presets, but just so the user can record his own settings) for the commercial version (and maybe the filter in it, not in the freeware)