Thanks, I get those two confused all the time!
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Thanks to everyone that’s already bought it, much appreciated!
Any feedback or demos?
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Just bought this! Very excited to make some patches this weekend!
Just picked it up. Pings beautifully. Sounds fantastic. Many thanks Andy.
(A few weeks ago I picked up the Random Source Haible Tau Phaser in hardware. The man was a genius!)
Great, thanks! One thing to try is mixing the NPN2 and BP4 responses, with both polarities. This will move the notches inwards and outwards from the default position of the NPN2!
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Thanks for the absolute wonderful filter!
I quickly tried it out on a patch that uses a pinging filter as sound source and this filter is amazing.
I will refine the patch and post an example (and the patch) this week.
Damn it, something else to buy! I’m trying to avoid spending money but I do love a good filter ping. As someone who uses guitar a lot with VCV, the stomp box emulations sound interesting. I don’t use a lot of distortion these days so personally one effect I’d love to see modelled would be a decent Uni-vibe. Not sure there would much demand for that generally though!
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Love this filter a lot. I will make a demo this weekend. 
From a certain perspective you’re single-handedly raising analog filter modelling quality in VCV rack to the level of Softube modular:
Reaktor vs VCV Rack 2023 For Analogue Modelling - Modular Synthesis Forum - KVR Audio
So please keep the great stuff coming!
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A few hacks to get more than a sinewave in self oscillation 
…crossfading between these outputs at audio rate gives you something close from digital phase modulation!
This one is fun , tho you lose V/oct tracking
A serge VCFQ trick that work great dispite the 1sample/cable delay
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I believe there is a typo in the documentation regarding the FREQ control:
“FREQ (8hz – 30000khz)”
I certainly hope that should read either 30,000Hz, or 30kHz
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Yep, definitely a typo. I’ve fixed it now
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got it…congrats, it sounds amazing!
Yeaahhhh… bought. Thank you for the comparison videos, they really sold me. I wasn’t 100% on getting a very similar (on paper) premium filter this soon after buying the other one, but given that the filter wasn’t my main “wow” focus when getting that bundle (I love the oscillator modules), and given how phenomenal this one sounds, ultimately it was an easy buy 
… Congrats on the release!
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I’ve submitted an update v2.0.1, which should be available soon. It keeps the resonance a little stronger at high frequencies.
It also adds a new right click menu to select the forward beta of the pnp transistors in the circuit. This “beta” is one of the non-ideal parts of transistors that introduces more second order harmonics. The discrete OTA will add asymmetric clipping (and so 2nd order harmonics) when pushed hard, but this beta parameter works even at lower levels of drive. It’s pretty subtle, since the entire circuit distorts at lot already.
Shown in the picture is a pure sine wave input at 1khz from the Befaco Even Osc, with the filter at 2khz and the drive at 6 with various settings for pnp forward beta. The default value is 400:
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Hi Andrew, maybe you like this one, in the first patch
(first 5 minutes in the video) I used only the CF100 for the voice:
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When I generated the previous PNP beta plots to show the harmonics I also tested the E440 model and was shocked by the plots. I double checked everything, and yes, it’s not pretty - this is at project sample rate of 44.1khz, using the latest versions of everything, 1khz sine input from the Befaco Even Osc, 12khz filter cutoff frequency on both, and clean post filter level adjustment to match the plots:
I’ve contacted the developer, hopefully they can fix it since it still seems pretty broken to me.
edit: for those that aren’t aware, what you should see in the plots from a 1khz input sine wave going through a non-linearity is a bunch of multiples of this frequency, so 2, 3, 4, 5khz, etc, slowly going down in amplitude, and then some lower level hiss, or possibly power supply hum from analog kit at around 100hz or so (double the frequency of the mains, since it’s rectified).
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Jeepers! My intentionally alias-y, digital circuit-bent sounding filter doesn’t even do that, even with some of the “bend” switches at the bottom on.
Is that with E440 bass boost?
yes, but also note there is zero resonance so the bass boost won’t even do anything! the CF100 has correctly modelled bass boost from the JH circuit, which is what the E440 analog filter does.