Modular Feedback with Doepfer's Wasp Filter! 

This was awesome! I have the Wasp, but the Cytomic filter also sounds very analogue, and I generally use that more. I've found that most filters in VCV can be tuned and respond correctly to pitch CV. I like to ping Cytomic or MI Liquid, and use it as a percussive synth voice. So much you can do with just filters. 👌

thanks, i will buy that wasp

You can use bogaudio analyzer XL as a spectrum analyzer, though it's not as pretty as ProQ3

Hey there. Nice examples, not to throw any shade. The thing is: the idea of "may be the most analog-sounding filter" is dubious to me. Maybe it is, maybe it isn't. I didn't feel anything special at all. I can't run my tests cause it's paid, but it sounds pretty sterile. The things I would look at in such a filter are: how does it react to different input amplitudes; how does it react to a change of symmetry. These might be top of my list in making a conclusion about analog modelling. In my beloved Surge XT, lowpass filters are plentiful, and they all sound different and great. I love them. However, without employing Feedback (which is thankfully built-in for all of them, and for free) they all pretty much do not react to the things I've listed above (aside from a possibility of them doing DC offset filtering of OSCs before the filters). I did a list of filters built in into Cardinal, so you can look at them in VCV 2 as well. My favorites are Autinn Flora and Chow Werner. Others are: Autinn Fil, Prism Droplet. The ones that didn't react to offset were: Audible Instruments (two of them), Airwindows Capacitor, kocmoc svf, bidoo limbo. The default VCV filter reacted somewhat, only in some cases, AFAIR, as Surge module did as well. I didn't test what would happen if you build in the feedback right into the patch. Which very easy and is free, it's just limited by the gain of the cables, unfortunately. Feedback-ed SurgeXT filters paired with MSaturator and TubePreamp sound insane and diverse. All of it for free. I feel like $15 for a filter I can't try is a bit much. I know, I'm spoiled by great free software, but still. This filter didn't blow my mind at all to pay a price that you can get a nice utility for, or something great discounted from, say, Melda.

all digital filters will do this unless they are programmed to stop audio because they have a sample delay in their structure for the filters to sound good. Nothing would happen with real analog hardware so i dunno what you mean

That sounds like the rez mod you can do on real hardware! It even behaves the same way, when you activate it and it kinda divebombs down. Impressive!

Too bad that in VCV every cable connection adds 1 sample delay.

it sounds nothing like the hardware