Very interesting work, nonetheless. I'm assuming we're still talking about a circuit that's being applied BEFORE plugging it into a preamp? Since that was my initial inquiry, which seems to be almost non-existent, at least, on the internet.
BTW.. I see you're also a plugin developer. Very interesting plugin work as well, but what I'd really like to try is a version for the old DirectX format because the program I use to record vocals is very old and does not support VST.