I really like the way Quadravox VST and H949/H910 VSTs work when it comes to harmonizing. Specifically, being able to add lines of harmony in real time by manipulating notes individually. Are there any plugins outside of Eventide's collection that can do the same thing? Please let me know and thanks in advance.

 

I think Quadravox is one of a kind. I really like it and there may not be any good alternative to it. There is, however, Lexicon Multivoice Pitch and Pitchshift if you want to try.

 

Soundtoys crystallizer could be an option

 

Have you tried Cthulhu? https://www.xferrecords.com/products/cthulhu

 

+1 for loomer stuff... always very good

 

Discontinued now but Lexicon's ResonantChords was always fun to use to harmonize in an ethereal way.

 

Thanks this looks similar to what I had in mind

 

Cthulhu Is a MIDI plugin, I think he is asking for an Audio Effect