Verbos Amplitude & Tone Controller 1/3: Overview; Input Gain & Resonance (LMS EE)

The Verbos Amplitude & Tone Controller combines an input gain section with lovely saturation, a 2-pole vactrol-based self-oscillating low pass filter with diode limited resonance, and an Arp 2600-inspired VCA with simultaneous linear and exponential control voltage, all using discrete components. If you’re looking for that so-called “vintage sound” combining not-buzzy overdrive and a constricted, low-mid croak when driven hard, start here.
This first video starts with a montage of some of the sounds it can create, and then goes over its inputs, outputs, and controls. After that I spend the rest of the video demonstrating how you can play the Input Gain and Resonance against each other to create a wide range of sounds that range from very tame to living inside a pressure cooker:
0:00 some examples
(warning: some extreme bass starting at 0:22)
0:32 module overview
1:12 its tamer side
2:02 Input Gain versus Resonance
The remaining movies explore its percussion possibilities in particular ( • Verbos Amplitude & Ton... ), and both frequency and amplitude modulating the VCF and VCA respectively ( • Verbos Amplitude & Ton... ).
This is another addition to my ever-growing Eurorack Expansion course. Learning Modular Patrons get additional notes that go along with each video:
learningmodular.com/register/...
/ learningmodular

[@tyroneshoelacez3498]

I wish Verbos would give you all their modules so you could explain them all in detail. I bet they would sell a lot of them!

[@Banksyyt]

Thanks again for this video. I learned a lot!

[@elmodic5282]

Brilliant demonstration of the Verbos A & T Controller.

[@wackenthaljef]

Awesome module!!

[@Fluidstructure]

Great video! On the Want List now

[@brianrodman1033]

I bet this would sound incredible with the Verbos Dual Four Pole Filter. It would be nice if more modules were built as robustly as these, the beefy PCB’s, panel mounted pots, etc.

[@00Ivanov]

Actually, it is a one-pole filter. Still, nice to see a good, thorough demo of this beastie :)

[@LearningModular]

Thanks for bringing that to my attention! I asked Mark Verbos what was going on inside, and this was his detailed response: "It’s a 2 pole Sallen & Key design. Sallen & Key filters include MS-20, Steiner Parker, Lopass Gate. It involves one pole in series and one pole in the feedback of the filter. So, in the Lopass Gate it is a 2 pole filter in filter mode and a 1 pole filter/VCA in the “combo" mode. In the ATC, it becomes a 1 pole when the resonance control is all the way down, allowing the combo mode to be replicated."

[@00Ivanov]

@@LearningModular Ah, that's interesting. Learned something new today. Thanks for checking that out with Mark himself. :).

[@Natemasterflex]

👏

[@NickHchaos]

I was thinking of getting one of these for a long time but ended up with www.modulargrid.net/e/amsynths-am8012-arp-2600p-filter so I think I'm satisfied.