its just a dsp based effects unit i guess, no real ‘name’ for it.
there are certainly vst’s that sound just as good (and better) but i dont think there are any that sound like the Black Hole directly, esp since the algorithms are set up to be controlled with CV and two knobs. The sweet spots on the sounds from the black hole are designed to be very very wide since the controls are relatively limited compared a vst.
With a vst you’d have to dial it in pretty carefully and maybe use another vst after it to really get it sounding similar. Doable, and worth doing. But its def a fun privilege to have in it a little CV controlled unit.
This guy makes a wicked fx module using the same audio chip as the black hole as well, programming is a lot more wild tho. I want one, but they are hard to find