In the last weeks I re-implemented the MIDIbox SID sound engines in C, so that it is possible to run MBSID on a STM32 core, but also to emulate it accurately on a Mac or PC.  The AU/VST gives you the possibility to try some MBSID patches before building the hardware. The sound isn’t so fat like on the original, the filter sounds weak and there are a lot of aliasing effects when higher frequencies are played… but probably you will like it anyhow.

Emulated MIDIbox SID AU and VST for Mac/Windows – MIDIbox Forum.

Thx trash80!